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Li Y, Ma Y, Zhu H, Liu Y, Pan S, Chen X, Wu T. Identifying distinct markers in two Sorghum varieties for baijiu fermentation using untargeted metabolomics and molecular network approaches. Food Chem X 2024; 23:101646. [PMID: 39139485 PMCID: PMC11321435 DOI: 10.1016/j.fochx.2024.101646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 07/08/2024] [Accepted: 07/09/2024] [Indexed: 08/15/2024] Open
Abstract
The quality of strong-flavor Baijiu, a prominent Chinese liquor, is intricately tied to the choice of sorghum variety used in fermentation. However, a significant gap remains in our understanding of how glutinous and non-glutinous sorghum varieties comprehensively impact Baijiu flavor formation through fermentation metabolites. This study employed untargeted metabolomics combined with feature-based molecular networking (FBMN) to explore the unique metabolic characteristics of these two sorghum varieties during fermentation. FBMN analysis revealed 267 metabolites within both types of fermented sorghum (Zaopei) in the cellar. Further multidimensional statistical analyses highlighted sphingolipids, 2,5-diketopiperazines, and methionine derivatives as critical markers for quality control. These findings represent a significant advancement in our understanding and provide valuable insights for regulating the quality of Baijiu flavors.
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Affiliation(s)
- Yulan Li
- School of Food and Biotechnology, Xihua University, No.9999 Guangchang Road, Chengdu 610039, China
| | - Yi Ma
- Sichuan Province Engineering Technology Research Center of Liquor-Making Grains, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Hui Zhu
- Sichuan Province Engineering Technology Research Center of Liquor-Making Grains, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Yin Liu
- Sichuan Yibin Hengshengfu Liquor Industry Group Co., Ltd., Yibin 644100, China
| | - Shijiang Pan
- Sichuan Yibin Agriculture and Rural Affairs Bureau, Yibin 644100, China
| | - Xi Chen
- SCIEX Analytical Instrument Trading Co., Shanghai, 200335, China
| | - Tao Wu
- School of Food and Biotechnology, Xihua University, No.9999 Guangchang Road, Chengdu 610039, China
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2
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Wu M, Zhang J, Fan Y, Chen H, Wang S, Shen C, Fu H, She Y. Esters-targeted colorimetric sensor array for the authenticity discrimination of strong-aroma baijiu with different origins. Food Chem 2024; 453:139560. [PMID: 38761721 DOI: 10.1016/j.foodchem.2024.139560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 04/17/2024] [Accepted: 05/02/2024] [Indexed: 05/20/2024]
Abstract
Baijiu authenticity has been a frequent problem driven by economic interests in recent years, so it is important to discriminate against baijiu with different origins. Herein, we proposed a simple and efficient esters-targeted colorimetric sensor array mediated by hydroxylamine hydrochloride. Esters undergo a nucleophilic addition reaction with hydroxylamine hydrochloride to form hydroxamic acid, which rapidly forms a purplish red ferric hydroxamate under FeCl3·6H2O. Bromophenol blue and rhodamine B enrich the color effects. The array detected 12 esters with a detection limit on the order of 10-5 of most esters and 16 mixed esters with R2 > 0.999 and recoveries close to 100%. Otherwise, for discriminating 34 strong-aroma baijius (SABs), the array has an accuracy of 98% according to the origin, and 95% according to the grades, with a response time of 1 min. This study provides a new strategy for authenticity determination and quality control of baijiu.
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Affiliation(s)
- Meixia Wu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Jinbin Zhang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yao Fan
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Hengye Chen
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, College of Pharmacy, South-Central Minzu University, Wuhan 430074, PR China
| | - Songtao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou Laojiao Co. Ltd., Luzhou 646000, PR China
| | - Caihong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou Laojiao Co. Ltd., Luzhou 646000, PR China
| | - Haiyan Fu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, College of Pharmacy, South-Central Minzu University, Wuhan 430074, PR China.
| | - Yuanbin She
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, PR China.
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3
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Yan Y, Zou M, Tang C, Ao H, He L, Qiu S, Li C. The insights into sour flavor and organic acids in alcoholic beverages. Food Chem 2024; 460:140676. [PMID: 39126943 DOI: 10.1016/j.foodchem.2024.140676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Revised: 07/13/2024] [Accepted: 07/25/2024] [Indexed: 08/12/2024]
Abstract
Alcoholic beverages have developed unique flavors over millennia, with sourness playing a vital role in their sensory perception and quality. Organic acids, as crucial flavor compounds, significantly impact flavor. This paper reviews the sensory attribute of sour flavor and key organic acids in alcoholic beverages. Regarding sour flavor, research methods include both static and dynamic sensory approaches and summarize the interaction of sour flavor with aroma, taste, and mouthfeel. In addition, this review focuses on identifying key organic acids, including sample extraction, chromatography, olfactometry/taste, and mass spectrometry. The key organic acids in alcoholic beverages, such as wine, Baijiu, beer, and Huangjiu, and their primary regulatory methods are discussed. Finally, future avenues for the exploration of sour flavor and organic acids by coupling machine learning, database, sensory interactions and electroencephalography are suggested. This systematic review aims to enhance understanding and serve as a reference for further in-depth studies on alcoholic beverages.
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Affiliation(s)
- Yan Yan
- Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Mingxin Zou
- Guizhou Tangzhuag Chinese Liquor Limited Company, Zunyi 564500, Guizhou Province, China
| | - Cui Tang
- Liupanshui Agricultural and Rural Bureau, Liupanshui 553002, Guizhou Province, China
| | - Hongyan Ao
- Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Laping He
- Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Shuyi Qiu
- Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, Guizhou Province, China
| | - Cen Li
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering, Guizhou University, Guiyang 550025, China.
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4
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Cao D, Lv J, Chu J, Xu S, Jin C, Zhang Y, Zhang Y, Zhang W, Kang J. Relationship between dynamic changes of microorganisms in Qupi and the quality formation of Fengxiangxing Huairang Daqu. Front Microbiol 2024; 15:1435765. [PMID: 39040905 PMCID: PMC11260737 DOI: 10.3389/fmicb.2024.1435765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 06/26/2024] [Indexed: 07/24/2024] Open
Abstract
Introduction Fengxiangxing Huairang Daqu (FHD) is one of the major types of Daqu in China. However, the relationship between the microbial community structure at different stages, the changes in the sensory characteristics, fermentation characteristics, volatiles, the most critical process point, and the quality formation of FHD is not clear. Methods Based on microscopic characterization, PacBio SMRT sequencing, and HS-SPME-GC-MS volatile metabolite analysis revealed the relationship between FHD quality formation and the dynamics of Qupi. Results The results showed that the 12th day of the culture was the most critical process point, highlighting the most significant differences in microbial community structure, sensory characteristics, fermentation characteristics, and flavor substances. Bacillus licheniformis (43.25%), Saccharopolyspora rectivirgula (35.05%), Thermoascus aurantiacus (76.51%), Aspergillus amstelodami (10.81%), and Saccharomycopsis fibuligera (8.88%) were the dominant species in FHD. S. fibuligera, A. amstelodami, and T. aurantiacus were associated with the snow-white color of the FHD epidermis, the yellow color of the interior, and the gray-white color, respectively. The abundance of T. aurantiacus, A. amstelodami, B. licheniformis, and S. rectivirgula was positively associated with the esterifying power and liquefying power of FHD. The abundance of T. aurantiacus and A. amstelodami was positively correlated with the saccharifying power of FHD. The abundance of S. fibuligera was positively related to the fermenting power of FHD. A total of 248 volatiles were detected in Qupi, mainly including alcohols, esters, aldehydes, and ketones. Of them, eleven volatiles had a significant effect on the flavor of Qupi, such as 1-butanol-3-methyl-, hydrazinecarboxamide, ethanol, phenylethyl alcohol, ethyl acetate, 2-octanone, 1-octen-3-ol, formic acid-hexyl ester, (E)-2-octen-1-ol, ethyl hexanoate, and 2(3H)-furanone-dihydro-5-pentyl-. The abundance of B. licheniformis, S. rectivirgula, T. aurantiacus, and S. fibuligera was positively correlated with the alcohols, aromatic compounds, and phenols in FHD. The abundance of S. fibuligera was positively correlated with the acids, esters, and hydrocarbons in FHD. Discussion These results indicate important theoretical basis and technical support for controllable adjustment of FHD microbial community structure, stable control of FHD quality, and precise, effective, and large-scale guidance of FHD production.
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Affiliation(s)
- Dan Cao
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi’an, China
| | - Jiali Lv
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi’an, China
| | - Jingying Chu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi’an, China
| | - Shuangshuang Xu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi’an, China
| | | | | | | | - Wen Zhang
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi’an, China
| | - Jie Kang
- Shaanxi Testing Institute of Product Quality Supervision, Xi’an, China
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5
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Yin X, Zhang M, Wang S, Wang Z, Wen H, Sun Z, Zhang Y. Characterization and discrimination of the taste and aroma of Tibetan Qingke baijiu using electronic tongue, electronic nose and gas chromatography-mass spectrometry. Food Chem X 2024; 22:101443. [PMID: 38846797 PMCID: PMC11154201 DOI: 10.1016/j.fochx.2024.101443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 05/01/2024] [Accepted: 05/02/2024] [Indexed: 06/09/2024] Open
Abstract
Consumers rely on flavor characteristics to distinguish different types of Qingke Baijiu (QKBJ). Clarifying QKBJ's traits enhances its recognition and long-term growth. Thus, this study analyzed eight QKBJ samples from different regions of Tibet (Lhasa, Sannan, Shigatse, and Qamdo) using GC-MS, electronic nose and electronic tongue. The radar charts of the electronic tongue and electronic nose revealed highly similar profiles for all eight samples. Fifteen common compounds were found in all samples, with the main alcohol compounds being 3-Methyl-1-butanol, 1-hexanol, isobutanol, 1-butanol, 1-nonanol, and phenylethyl alcohol, imparting fruity, floral, and herbal aromas. However, the Sannan samples had higher total alcohol content than total ester content, emphasizing bitterness. Lhasa1 exhibited the most prominent sweetness, Lhasa2 the most noticeable sourness, and Qamdo the most pronounced umami. Lhasa3 and Lhasa4 had total acid content second only to total ester content. Tyd had the highest alkanes, while Lhasa had most aldehydes among samples.
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Affiliation(s)
- Xiaoqing Yin
- Institute of Food Processing, Tibet Academy of Agricultural and Animal Husbandry Sciences, Tibet Lhasa 850000, China
| | - Man Zhang
- Sicuan Guojian Inspection Co., Ltd., Luzhou, Sichuan 646000, China
| | - Shanshan Wang
- Institute of Food Processing, Tibet Academy of Agricultural and Animal Husbandry Sciences, Tibet Lhasa 850000, China
| | - Zhirong Wang
- College of Food Science and Engineering, Yangzhou University, Yangzhou, 225001, China
| | - Huaying Wen
- Institute of Food Processing, Tibet Academy of Agricultural and Animal Husbandry Sciences, Tibet Lhasa 850000, China
| | - Zhiwei Sun
- China National Research Institute of Food and Fermentation Industries, Beijing 100015, China
| | - Yuhong Zhang
- Institute of Food Processing, Tibet Academy of Agricultural and Animal Husbandry Sciences, Tibet Lhasa 850000, China
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6
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Lu L, Zuo Q, Cheng Y, Huang Y. The mechanism of microbial structure and flavor characteristics in Qing- Jiang-flavor Jiupei regulated by different fermentation seasons. Food Chem X 2024; 22:101392. [PMID: 38798796 PMCID: PMC11127152 DOI: 10.1016/j.fochx.2024.101392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/09/2024] [Accepted: 04/14/2024] [Indexed: 05/29/2024] Open
Abstract
The physicochemical characteristics of Jiupei are crucial in regulating the metabolism of microbial communities and the flavor profile of Baijiu during the fermentation process. This study systematically monitored the physicochemical characteristics of Qing-Jiang-flavor Baijiu Jiupei (QJFJ) and analyzed its microbial community structure and flavor compounds. Results indicated that dominant bacteria were significantly enriched in Summer- and Autumn-Jiupei (Spring: Summer: Autumn: Winter = 1.00: 1.40: 1.29: 1.21), while dominant fungi were significantly enriched in Spring- and Autumn-Jiupei (Spring: Summer: Autumn: Winter = 1.45: 1.00: 1.35: 1.31). Sequentially, reducing sugars (day 0), temperature (day 5 - day 10), moisture (day 15), and acidity (day 20 - day 25) in Jiupei affected the succession pattern of the microbial community, regulating the abundance of Saccharomyces, Staphylococcus, Cyberlindnera, and Lactobacillus, individually. Alcohol and acid compounds are considered seasonal differential compounds in QJFJ. This study will provide a theoretical basis for Baijiu production across different seasons.
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Affiliation(s)
- Lijuan Lu
- College of Liquor and Food Engineering, Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, Guizhou University, Guiyang, Guizhou, 550025, China
- Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, China
| | - Qiancheng Zuo
- Guizhou Hankol Junfeng Liquor Co., Ltd., Zunyi, Guizhou 564500, China
| | - Yuxin Cheng
- College of Liquor and Food Engineering, Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, Guizhou University, Guiyang, Guizhou, 550025, China
- Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, China
| | - Yongguang Huang
- College of Liquor and Food Engineering, Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, Guizhou University, Guiyang, Guizhou, 550025, China
- Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, China
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7
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Wang X, Huang W, Huang J, Luo X, Nie M, Jiang T, Ban S, Li P. The mechanism of Laceyella sacchari FBKL4.010 produced tetramethylpyrazine in the liquid fermentation by comparative transcriptomic techniques. Front Microbiol 2024; 15:1414203. [PMID: 38939185 PMCID: PMC11208324 DOI: 10.3389/fmicb.2024.1414203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 06/03/2024] [Indexed: 06/29/2024] Open
Abstract
Tetramethylpyrazine (TTMP) is considered a crucial flavor component in Moutai-flavored liquor. Laceyeella sacchari FBKL4.010 (L. sacchari) is the dominant species found in Moutai-flavor Daqu, and this study aims to determine the mechanism by which L. sacchari produces TTMP during liquid fermentation of Moutai-flavor Daqu. The results of the liquid fermentation performance demonstrated a gradual increase in biomass over time, while there was a gradual decline in residual glucose content and pH value. Furthermore, analysis of volatile components revealed that liquid fermentation significantly enhanced the production of TTMP in Moutai-flavor Daqu, with the relative content of TTMP reaching 14.24 mg/L after 96 h of liquid fermentation. Additionally, to explore the synthesis mechanism of TTMP, we compared differentially expressed genes (DEGs) of L. sacchari between 24 and 96 h using comparative transcriptomic techniques. The results indicated that DEGs involved in isoleucine, valine, and leucine biosynthesis pathway were upregulated, while those associated with isoleucine, valine, and leucine degradation pathway were downregulated, suggesting that the valine, leucine, and isoleucine biosynthesis pathway primarily contributes ammonia for TTMP synthesis. The findings of this study present an opportunity for further elucidating the production process of TTMP in Moutai-flavor Daqu during liquid fermentation.
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Affiliation(s)
- Xiaodan Wang
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang, China
| | - Wu Huang
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang, China
| | - Jin Huang
- Guizhou Anjiu Co., Ltd., Zunyi, China
| | - Xiaoye Luo
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang, China
| | | | - Tao Jiang
- Guizhou Anjiu Co., Ltd., Zunyi, China
| | - Shidong Ban
- Academy of Agricultural Planning and Engineering, Beijing, China
| | - Pei Li
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- Qiandongnan Engineering and Technology Research Center for Comprehensive Utilization of National Medicine, Kaili University, Kaili, China
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8
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Zou XZ, Gong LC, Li TT, Lv SY, Wang J. Optimization of fermentation conditions for the production of γ-aminobutyric acid by Lactobacillus hilgardii GZ2 from traditional Chinese fermented beverage system. Bioprocess Biosyst Eng 2024; 47:957-969. [PMID: 38717593 DOI: 10.1007/s00449-024-03028-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 04/30/2024] [Indexed: 05/19/2024]
Abstract
γ-Aminobutyric acid (GABA) is a crucial neurotransmitter with wide application prospects. In this study, we focused on a GABA-producing strain from a traditional Chinese fermented beverage system. Among the six isolates, Lactobacillus hilgardii GZ2 exhibited the greatest ability to produce GABA in the traditional Chinese fermented beverage system. To increase GABA production, we optimized carbon sources, nitrogen sources, temperature, pH, and monosodium glutamate and glucose concentrations and conducted fed-batch fermentation. The best carbon and nitrogen sources for GABA production and cell growth were glucose, yeast extract and tryptone. Gradual increases in GABA were observed as the glucose and monosodium glutamate concentrations increased from 10 g/L to 50 g/L. During fed-batch fermentation, lactic acid was used to maintain the pH at 5.56, and after feeding with 0.03 g/mL glucose and 0.4 g/mL sodium glutamate for 72 h, the GABA yield reached 239 g/L. This novel high-GABA-producing strain holds great potential for the industrial production of GABA, as well as the development of health-promoting functional foods and medical fields.
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Affiliation(s)
- Xiao-Zhou Zou
- Jiangsu Key Laboratory of Sericultural and Animal Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, People's Republic of China
| | - Lu-Chan Gong
- Jiangsu Key Laboratory of Sericultural and Animal Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, People's Republic of China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agricultural and Rural Affairs, Sericultural Scientific Research Center, Chinese Academy of Agricultural Sciences, Zhenjiang, 212100, People's Republic of China
| | - Ting-Ting Li
- Jiangsu Key Laboratory of Sericultural and Animal Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, People's Republic of China
| | - Shu-Yi Lv
- Jiangsu Key Laboratory of Sericultural and Animal Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, People's Republic of China
| | - Jun Wang
- Jiangsu Key Laboratory of Sericultural and Animal Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212100, People's Republic of China.
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agricultural and Rural Affairs, Sericultural Scientific Research Center, Chinese Academy of Agricultural Sciences, Zhenjiang, 212100, People's Republic of China.
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9
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Li X, Zhang B, Li W, Zhao Y, Lyu X, You X, Lin L, Zhang C. Unraveling the chemosensory characteristics dependence of sauce-flavor baijiu on regionality using descriptive sensory analysis and quantitative targeted flavoromics. Food Chem 2024; 441:138274. [PMID: 38181665 DOI: 10.1016/j.foodchem.2023.138274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/05/2023] [Accepted: 12/22/2023] [Indexed: 01/07/2024]
Abstract
Descriptive sensory analysis, headspace solid-phase microextraction-gas chromatography-mass spectrometry, gas chromatography-flame ionization detector and multivariate statistical analysis were used to elucidate the regional dependence of sauce-flavor baijiu (SFB). Although SFB samples from different regions couldn't be clearly classified by sensory profiles, they could be clearly divided into 5 groups in principal component analysis plot based on quantitative targeted flavoromics analysis. And then, the relationship between sensory attributes and volatile compounds were investigated by network analysis. Twenty regional aroma markers were identified by multivariate statistical analysis to distinguish SFB samples from different regions. Furthermore, the influence of manufacturing operation on SFB in Guizhou region was further analyzed. Thirty-eight potential compounds were significant different in Guizhou SFB samples with different manufacturing operations. This study not only provides a better understanding of regional dependence on SFB flavor, but also further clarifies the inheritance importance of manufacturing operation in traditional SFB production.
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Affiliation(s)
- Xin Li
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Busheng Zhang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Wenxuan Li
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Yawen Zhao
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Xiaotong Lyu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China
| | - Xiaolong You
- Guizhou Xijiu Co., LTD., Xishui 564622, Guizhou, People's Republic of China.
| | - Liangcai Lin
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China.
| | - Cuiying Zhang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin Key Laboratory of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, People's Republic of China.
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10
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Hou Q, Wang Y, Qu D, Zhao H, Tian L, Zhou J, Liu J, Guo Z. Microbial communities, functional, and flavor differences among three different-colored high-temperature Daqu: A comprehensive metagenomic, physicochemical, and electronic sensory analysis. Food Res Int 2024; 184:114257. [PMID: 38609235 DOI: 10.1016/j.foodres.2024.114257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/19/2024] [Accepted: 03/19/2024] [Indexed: 04/14/2024]
Abstract
High-temperature Daqu (HTD) is the starter for producing sauce-flavor Baijiu, with different-colored Daqu (white, yellow, and black) reflecting variations in fermentation chamber conditions, chemical reactions, and associated microbiota. Understanding the relationship between Daqu characteristics and flavor/taste is challenging yet vital for improving Baijiu fermentation. This study utilized metagenomic sequencing, physicochemical analysis, and electronic sensory evaluation to compare three different-colored HTD and their roles in fermentation. Fungi and bacteria dominated the HTD-associated microbiota, with fungi increasing as the fermentation temperature rose. The major fungal genera were Aspergillus (40.17%) and Kroppenstedtia (21.16%), with Aspergillus chevalieri (25.65%) and Kroppenstedtia eburnean (21.07%) as prevalent species. Microbial communities, functionality, and physicochemical properties, particularly taste and flavor, were color-specific in HTD. Interestingly, the microbial communities in different-colored HTDs demonstrated robust functional complementarity. White Daqu exhibited non-significantly higher α-diversity compared to the other two Daqu. It played a crucial role in breaking down substrates such as starch, proteins, hyaluronic acid, and glucan, contributing to flavor precursor synthesis. Yellow Daqu, which experienced intermediate temperature and humidity, demonstrated good esterification capacity and a milder taste profile. Black Daqu efficiently broke down raw materials, especially complex polysaccharides, but had inferior flavor and taste. Notably, large within-group variations in physicochemical quality and microbial composition were observed, highlighting limitations in color-based HTD quality assessment. Water content in HTD was associated with Daqu flavor, implicating its crucial role. This study revealed the complementary roles of the three HTD types in sauce-flavor Baijiu fermentation, providing valuable insights for product enhancement.
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Affiliation(s)
- Qiangchuan Hou
- Brewing Technology Industrial College, Hubei University of Arts and Sciences, Xiangyang, Hubei Province, PR China; Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei Province, PR China; Xiangyang Lactic Acid Bacteria Biotechnology and Engineering Key Laboratory, Xiangyang, Hubei Province, PR China; Xiangyang Jiangxiang Baijiu Solid State Fermentation Enterprise-School Joint Innovation Center, Xiangyang, Hubei Province, PR China
| | - Yurong Wang
- Brewing Technology Industrial College, Hubei University of Arts and Sciences, Xiangyang, Hubei Province, PR China; Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei Province, PR China; Xiangyang Lactic Acid Bacteria Biotechnology and Engineering Key Laboratory, Xiangyang, Hubei Province, PR China; Xiangyang Jiangxiang Baijiu Solid State Fermentation Enterprise-School Joint Innovation Center, Xiangyang, Hubei Province, PR China
| | - Dingwu Qu
- Brewing Technology Industrial College, Hubei University of Arts and Sciences, Xiangyang, Hubei Province, PR China; Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei Province, PR China; Xiangyang Lactic Acid Bacteria Biotechnology and Engineering Key Laboratory, Xiangyang, Hubei Province, PR China; Xiangyang Jiangxiang Baijiu Solid State Fermentation Enterprise-School Joint Innovation Center, Xiangyang, Hubei Province, PR China
| | - Huijun Zhao
- Brewing Technology Industrial College, Hubei University of Arts and Sciences, Xiangyang, Hubei Province, PR China; Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei Province, PR China; Xiangyang Lactic Acid Bacteria Biotechnology and Engineering Key Laboratory, Xiangyang, Hubei Province, PR China; Xiangyang Jiangxiang Baijiu Solid State Fermentation Enterprise-School Joint Innovation Center, Xiangyang, Hubei Province, PR China
| | - Longxin Tian
- Brewing Technology Industrial College, Hubei University of Arts and Sciences, Xiangyang, Hubei Province, PR China; Xiangyang Jiangxiang Baijiu Solid State Fermentation Enterprise-School Joint Innovation Center, Xiangyang, Hubei Province, PR China; Xiangyang Key Laboratory of Solid State Fermentation of Jiangxiang Baijiu, Xiangyang, Hubei Province, PR China
| | - Jiaping Zhou
- Brewing Technology Industrial College, Hubei University of Arts and Sciences, Xiangyang, Hubei Province, PR China; Xiangyang Jiangxiang Baijiu Solid State Fermentation Enterprise-School Joint Innovation Center, Xiangyang, Hubei Province, PR China; Xiangyang Key Laboratory of Solid State Fermentation of Jiangxiang Baijiu, Xiangyang, Hubei Province, PR China
| | - Juzhen Liu
- Brewing Technology Industrial College, Hubei University of Arts and Sciences, Xiangyang, Hubei Province, PR China; Xiangyang Jiangxiang Baijiu Solid State Fermentation Enterprise-School Joint Innovation Center, Xiangyang, Hubei Province, PR China; Xiangyang Key Laboratory of Solid State Fermentation of Jiangxiang Baijiu, Xiangyang, Hubei Province, PR China
| | - Zhuang Guo
- Brewing Technology Industrial College, Hubei University of Arts and Sciences, Xiangyang, Hubei Province, PR China; Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei Province, PR China; Xiangyang Lactic Acid Bacteria Biotechnology and Engineering Key Laboratory, Xiangyang, Hubei Province, PR China; Xiangyang Jiangxiang Baijiu Solid State Fermentation Enterprise-School Joint Innovation Center, Xiangyang, Hubei Province, PR China.
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11
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Liu QR, Lin XL, Lu ZM, Chai LJ, Wang ST, Shi JS, Zhang SY, Shen CH, Zhang XJ, Xu ZH. Influence on the volatilization of ethyl esters: Nonnegligible role of long-chain fatty acids on Baijiu flavor via intermolecular interaction. Food Chem 2024; 436:137731. [PMID: 37862997 DOI: 10.1016/j.foodchem.2023.137731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 09/25/2023] [Accepted: 10/08/2023] [Indexed: 10/22/2023]
Abstract
Long-chain fatty acids (LCFAs) are commonly presented in Baijiu, but their influence on flavor is ambiguous. The interaction between LCFAs and volatiles was systematically investigated in terms of chemometrics, sensory, and chemical-physical perceptions. The static-headspace-gas-chromatography-mass-spectrometry results demonstrated LCFAs suppressed the volatilizations of most volatiles. According to Phase-ratio-variation analysis, partition coefficients of ethyl acetate (EA) and ethyl hexanoate (EH) decreased 4%-31% and 27%-74%, while those of ethyl butyrate (EB) increased. Calculated by molecular dynamic simulation, the attractive intermolecular forces related to EA/EH increased with oleic acid (OA) addition, while those related to EB decreased. Sensory evaluation confirmed the olfactory threshold of EA and EH increased by 2.4 and 2.7 times respectively, but the threshold of EB decreased from 0.36 to 0.05 mg/L in the presence of OA. Overall, LCFAs altered the intermolecular interaction forces related to esters and ethanol, subsequently affecting the volatile profile and modifying Baijiu flavor's sensory perception.
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Affiliation(s)
- Qing-Ru Liu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
| | - Xian-Li Lin
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China; School of Life Science and Health Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Li-Juan Chai
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, P.R. China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Jin-Song Shi
- School of Life Science and Health Engineering, Jiangnan University, Wuxi 214122, PR China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, P.R. China
| | - Su-Yi Zhang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Xiao-Juan Zhang
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China.
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China.
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12
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Yu Y, Zhang B, Jiang X, Cui Y, Luo H, Stergiadis S, Wang B. Exploring the metabolomic landscape: Perilla frutescens as a promising enhancer of production, flavor, and nutrition in Tan lamb meat. Meat Sci 2024; 209:109419. [PMID: 38154372 DOI: 10.1016/j.meatsci.2023.109419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/20/2023] [Accepted: 12/21/2023] [Indexed: 12/30/2023]
Abstract
Addressing health-related concerns linked to the metabolite profile of lamb meat has become paramount, in line with the growing demand for enhanced flavor and taste. We examined the impact of Perilla frutescens seeds on Tan lamb growth, carcass traits, and metabolite profiles. Three diets were employed: a low-concentrate group (LC), a high-concentrate group (HC), and a PFS group (the LC diet supplemented with 3% Perilla frutescens seeds) on a dry matter basis. Forty-five male Tan-lambs (approximately six months) with similar body weights (25.1 kg ± 1.12 SD) were randomly assigned to one of these three groups for 84-day feeding, including an initial 14-day adjustment phase. The supplementation of PFS resulted in increased average daily gain (P < 0.01) and improved carcass quality and meat color (P < 0.05). Additionally, it led to an enhancement in omega-3 polyunsaturated fatty acids (P < 0.05) and a reduction in the omega-6/omega-3 ratio (P < 0.05). Using gas chromatography-mass spectrometry, 369 volatile compounds were identified with enhanced levels of acetaldehyde and 1,2,4-trimethyl-benzene associated with PFS (P < 0.05). Among the 807 compounds identified by ultra-high performance liquid chromatography-mass spectrometry, there were 66 significantly differential compounds (P < 0.05), including 43 hydrophilic metabolites and 23 lipids. PFS supplementation led to significant alterations in 66 metabolites, with three metabolites including 2,5-diisopropyl-3-methylphenol, 3-hydroxydecanoic acid, and lysophosphatidylcholine (15:0) emerging as potential PFS-related biomarkers. The study indicates that PFS supplementation can enhance Tan-lamb growth, feed efficiency, and meat quality, potentially providing lamb meat with improved flavor and nutritional characteristics.
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Affiliation(s)
- Yue Yu
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China
| | - Boyan Zhang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China
| | - Xianzhe Jiang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China
| | - Yimeng Cui
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China
| | - Hailing Luo
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China
| | - Sokratis Stergiadis
- University of Reading, School of Agriculture, Policy and Development, Department of Animal Sciences, Reading RG6 6EU, United Kingdom
| | - Bing Wang
- State Key Laboratory of Animal Nutrition and Feeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, PR China.
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13
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Han B, Gong H, Ren X, Tian S, Wang Y, Zhang S, Zhang J, Luo J. Analysis of the differences in physicochemical properties, volatile compounds, and microbial community structure of pit mud in different time spaces. PeerJ 2024; 12:e17000. [PMID: 38435984 PMCID: PMC10909342 DOI: 10.7717/peerj.17000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 02/05/2024] [Indexed: 03/05/2024] Open
Abstract
Pit mud (PM) is among the key factors determining the quality of Nongxiangxing baijiu, a Chinese liquor. Microorganisms present inside PM are crucial for the unique taste and flavor of this liquor. In this study, headspace solid-phase microextraction was used in combination with gas chromatography and high-throughput sequencing to determine the volatile compounds and microbial community structure of 10- and 40-year PM samples from different spaces. The basic physicochemical properties of the PM were also determined. LEfSe and RDA were used to systematically study the PM in different time spaces. The physicochemical properties and ester content of the 40-year PM were higher than those of the 10-year PM, but the spatial distribution of the two years PM samples exhibited no consistency, except in terms of pH, available phosphorus content, and ester content. In all samples, 29 phyla, 276 families, and 540 genera of bacteria, including four dominant phyla and 20 dominant genera, as well as eight phyla, 24 families, and 34 genera of archaea, including four dominant phyla and seven dominant genera, were identified. The LEfSe analysis yielded 18 differential bacteria and five differential archaea. According to the RDA, the physicochemical properties and ethyl caproate, ethyl octanoate, hexanoic acid, and octanoic acid positively correlated with the differential microorganisms of the 40-year PM, whereas negatively correlated with the differential microorganisms of the 10-year PM. Thus, we inferred that Caproiciproducens, norank_f__Caloramatoraceae, and Methanobrevibacter play a dominant and indispensable role in the PM. This study systematically unveils the differences that affect the quality of PM in different time spaces and offers a theoretical basis for improving the declining PM, promoting PM aging, maintaining cellars, and cultivating an artificial PM at a later stage.
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Affiliation(s)
- Baolin Han
- College of Bioengineering, Sichuan University of Science & Engineering, Yibin, Sichuan, China
| | - Hucheng Gong
- College of Bioengineering, Sichuan University of Science & Engineering, Yibin, Sichuan, China
| | - Xiaohu Ren
- College of Bioengineering, Sichuan University of Science & Engineering, Yibin, Sichuan, China
| | - Shulin Tian
- College of Bioengineering, Sichuan University of Science & Engineering, Yibin, Sichuan, China
| | - Yu Wang
- College of Bioengineering, Sichuan University of Science & Engineering, Yibin, Sichuan, China
| | - Shufan Zhang
- College of Bioengineering, Sichuan University of Science & Engineering, Yibin, Sichuan, China
| | - Jiaxu Zhang
- Chengdu Shuzhiyuan Liquor Industry Co., Ltd, Chengdu, Sichuan, China
| | - Jing Luo
- Chengdu Shuzhiyuan Liquor Industry Co., Ltd, Chengdu, Sichuan, China
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14
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Wu F, Fan S, He G, Liang S, Xu Y, Tang K. Comparison of Aroma Compounds and Sensory Characteristics between Two Different Types of Rice-Based Baijiu. Foods 2024; 13:681. [PMID: 38472793 DOI: 10.3390/foods13050681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/14/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
Rice-based Baijiu has gained popularity in the Chinese market. Qingya-flavored Baijiu, a variant of Xiaoqu-fermented Baijiu, employs rice as its primary raw material, with an improved production process compared to traditional rice-flavored Baijiu. We comprehensively characterized and compared the aroma profiles of these two rice-based Baijiu types using static sensory experiments (QDA, quantitative descriptive analysis) and dynamic sensory experiments (TDS, temporal dominance of sensations). Qingya-flavored Baijiu exhibited pronounced plant, oily, and roasted aromas, while traditional rice-flavored Baijiu displayed more prominent fruity, floral, and sour notes. Utilizing GC-O-MS (gas chromatography-olfactometry-mass spectrometry) and multi-method quantification, we qualitatively and quantitatively analyzed 61 key aroma compounds, identifying 22 compounds with significant aroma contributions based on odor activity values (OAVs). Statistical analyses, combining sensory and chemical results, were conducted to predict important aroma compounds responsible for the aroma differences between the two Baijiu types. Aroma Recombination and Omission experiments showed that seven compounds play key roles in the aroma of Qingya-flavored Baijiu, including (2E,4E)-Deca-2,4-dienal, linalool, apricolin, ethyl acetate, ethyl isobutyrate, ethyl caprylate, and ethyl isovalerate.
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Affiliation(s)
- Fan Wu
- Lab of Brewing Microbiology and Applied Enzymology, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology of Ministry of Education, State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Shaohui Fan
- Guangdong Shiwan Baijiu Group Company Ltd., Foshan 528000, China
| | - Guoliang He
- Guangdong Shiwan Baijiu Group Company Ltd., Foshan 528000, China
| | - Siyu Liang
- Guangdong Shiwan Baijiu Group Company Ltd., Foshan 528000, China
| | - Yan Xu
- Lab of Brewing Microbiology and Applied Enzymology, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology of Ministry of Education, State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Ke Tang
- Lab of Brewing Microbiology and Applied Enzymology, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology of Ministry of Education, State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
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15
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Xu Y, Qiao X, He L, Wan W, Xu Z, Shu X, Yang C, Tang Y. Airborne microbes in five important regions of Chinese traditional distilled liquor ( Baijiu) brewing: regional and seasonal variations. Front Microbiol 2024; 14:1324722. [PMID: 38264484 PMCID: PMC10803494 DOI: 10.3389/fmicb.2023.1324722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 12/26/2023] [Indexed: 01/25/2024] Open
Abstract
Baijiu is one of the six primary distilled spirits in the world. It is produced through the solid-state fermentation of grains in the open environment, so high-quality Baijiu brewing largely depends on terrior. Environmental microbes are one of the most important factors affecting the quality, quantity, and flavors of Baijiu. As atmosphere is a pool and transport pathway for microbes from the ambient environment to Baijiu brewing ecosystems, we explored the functional microbes of Baijiu brewing in five important regions. The regions fell into two topographical types, namely, plain and river-valley. In total, 41 functional microbes were identified rich (relative abundance >0.1%) in at least one of the regions, such as the fungi of Aspergillus, Candida, Cladosporium, Debaryomyces, Penicillium, Pichia, Rhizopus, Saccharomyces, and Wickerhamomyces and the bacteria of Acetobacter, Bacillus, Clostridium, Enterobacter, Lactobacillus, Methanosarcina, Methanobacterium, Methanobrevibacter, and Pseudomonas. However, some functional bacteria (e.g., Clostridia, Gluconacetobacter, and Weissella) and fungi (e.g., Dekkera, Eurotium, Issatchenkia, Mucor, and Phoma) were not rich or were not detected in the atmosphere. Airborne microbiomes and the Phylogenetic Diversity (PD) index were significantly different between the main brewing season (winter) and the summer break in each region, except for the fungi in one region. In winter, airborne microbiomes were significantly different among almost all the regions. The relative abundance of bacterial fermentation function in each region increased from summer to winter. The relative abundances of fungal yeast function were higher in winter for the plain regions but were higher in summer for the river-valley regions. In sum, our results suggested that: (1) atmosphere was one but not the sole important source of functional microbes for Baijiu brewing and (2) microbiomes in different regions might be quite different but they could share some major functions related to Baijiu brewing.
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Affiliation(s)
- Yan Xu
- College of Architecture and Environment, Sichuan University, Chengdu, China
| | - Xue Qiao
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, China
- School of Carbon Neutrality Future Technology, Sichuan University, Chengdu, China
| | - Lei He
- College of Life Sciences, Sichuan Normal University, Chengdu, China
| | - Wujie Wan
- College of Life Sciences, Sichuan Normal University, Chengdu, China
| | - Zhongjun Xu
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, China
| | - Xi Shu
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, China
| | - Cheng Yang
- Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, China
| | - Ya Tang
- College of Architecture and Environment, Sichuan University, Chengdu, China
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16
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Zhang J, Zhao M, Chen J, Zhu Y, Xiao C, Li Q, Weng X, Duan Y, Zuo Y. The improvement of Hovenia acerba-sorghum co-fermentation in terms of microbial diversity, functional ingredients, and volatile flavor components during Baijiu fermentation. Front Microbiol 2024; 14:1299917. [PMID: 38249457 PMCID: PMC10797018 DOI: 10.3389/fmicb.2023.1299917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/07/2023] [Indexed: 01/23/2024] Open
Abstract
The quality of Baijiu was largely affected by raw materials, which determine the flavor and taste. In the present study, organic acids, polyphenols, volatile flavor components and microbial community in Hovenia acerba-sorghum co-fermented Baijiu (JP1) and pure sorghum-fermented Baijiu (JP2) were comprehensively analyzed. Organic acids, polyphenols and volatile flavor components in JP1 were more abundant than JP2. The abundance and diversity of bacteria and fungi in JP1 was higher than that in JP2 in the early stage of fermentation, but presented opposite trend in the middle and late stages. Leuconostoc, Lentilactobacillus and Issatchenkia were dominant genera in JP1. Whereas, Cronobacter, Pediococcus and Saccharomyces occupied the main position in JP2. Lentilactobacillus and Issatchenkia were positively related to most of organic acids and polyphenols. Pseudomonas, Rhodococcus, Cronobacter, Pediococcus, Brucella, Lentilactobacillus, Lactobacillus, Saccharomycopsis, Wickerhamomyces, Aspergillus, Thermomyces and unclassified_f-Dipodascaccae were associated with the main volatile flavor components. The main metabolic pathways in two JPs exhibited the variation trend of first decreasing and then increasing, and the metabolism activity in JP1 were higher than that in JP2. The results demonstrated the introduction of Hovenia acerba improved the functional ingredients and volatile flavor components, which is helpful for the quality promotion of Baijiu. This study identified the key microorganisms and discussed their effect on organic acids, polyphenols and volatile flavor components during the fermentation of Baijiu with different raw materials, providing a scientific basis for the development and production of high-quality Baijiu.
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Affiliation(s)
- Jing Zhang
- College of Food and Biological Engineering, Chengdu University, Chengdu, China
- Solid-state Fermentation Resource Utilization Key Laboratory of Sichuan Province, Faculty of Quality Management and Inspection and Quarantine, Yibin University, Yibin, China
| | - Minhui Zhao
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Jing Chen
- College of Food and Biological Engineering, Chengdu University, Chengdu, China
- Solid-state Fermentation Resource Utilization Key Laboratory of Sichuan Province, Faculty of Quality Management and Inspection and Quarantine, Yibin University, Yibin, China
| | - Yuanting Zhu
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Chen Xiao
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Qi Li
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Xiaoqi Weng
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Yunxuan Duan
- College of Life Science, Sichuan Normal University, Chengdu, China
| | - Yong Zuo
- College of Life Science, Sichuan Normal University, Chengdu, China
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17
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Niu Y, Yang Y, Mao C, Xiao Z. Effects of gallic acid on the release of aroma compounds in Moutai Baijiu. Food Res Int 2024; 176:113655. [PMID: 38163678 DOI: 10.1016/j.foodres.2023.113655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/26/2023] [Accepted: 10/31/2023] [Indexed: 01/03/2024]
Abstract
Due to the trace concentrations of gallic acid (GA), the interaction mechanism between GA and flavor compounds is limited, and the effects on the aroma compounds of Moutai Baijiu are even more unclear. In this study, the aroma compounds and phenolic compounds in Moutai Baijiu were investigated by stir bar sorptive extraction (SBSE), gas chromatography-olfactometry (GC-O), gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS). A total of 63 volatiles and 10 phenolic compounds were identified, and 16 esters and 4 alcohols were identified as the important aroma substances (odor activity values ≥1). The effect of GA on the release of aroma compounds was investigated by sensory analysis and partition coefficient. The results showed that GA mainly inhibited the volatilization of alcohols, low concentrations of GA promoted the release of esters, and high concentrations slowed down or even inhibited the release effect affected by the hydrophobicity of aroma compounds. UV spectroscopy and thermodynamic analysis further revealed that the interaction of GA with 1-propanol was attributed mainly to hydrogen bonding and van der Waals forces, and the interaction with other compounds was mainly influenced by hydrophobic effects. These results show that gallic acid can effectively control the release of the aromas of Moutai Baijiu, highlight the important role of GA on the volatiles of baijiu, and provide theoretical support for further healthy improvement of the sensory quality of baijiu.
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Affiliation(s)
- Yunwei Niu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China
| | - Yuling Yang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China
| | - Chengting Mao
- China Tobacco Jiangsu Industrial Co., Jiangsu 210019, China
| | - Zuobing Xiao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China; School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
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18
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Yu Q, Mou F, Xiao J, Zhan C, Li L, Chang X, Dong X, Chen M, Wang X, Chen M, Fang S. Correlational analysis of physicochemical indexes, microbial communities, and volatile components in light-flavor Daqu from north and south regions of China. World J Microbiol Biotechnol 2023; 40:54. [PMID: 38147274 DOI: 10.1007/s11274-023-03865-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 12/01/2023] [Indexed: 12/27/2023]
Abstract
Daqu is of great significance to the brewing process of Baijiu, and there are variations in the light-flavor Baijiu Daqu in different regions. However, few studies have been conducted on light-flavor Daqu from the north and south regions of China. In this study, the physicochemical indices, volatile flavor components, and microbial community structure of two types of Daqu from the north and south regions of China were comparatively analyzed. The study findings reveal that Daqu originating from the southern region of China (HB) exhibits superior moisture content, acidity, starch content, and saccharification power. In contrast, Daqu from the northern region of China (SX) displays higher fermentation, esterification, and liquefaction power. The analysis of the microbial community structure revealed that HB was dominated by Bacillus, Kroppenstedtia, Saccharomycopsis, and Thermoascus, while SX was dominated by Bacillus, Prevotella, and Saccharomycopsis. The analysis detected a total of 47 volatile components in both HB Daqu and SX Daqu. The volatile components of pyrazine were significantly more abundant in HB Daqu than in SX Daqu, while alcohol compounds were more prominent in SX Daqu than in HB Daqu. In addition, the RDA analysis established a correlation between dominant microorganisms and volatile components. Cyanobacteria, Fusobacteriota, Ascomycota, Blastocladiomycota, Basidiomycota, and Mucormyce exhibited positive correlations with a significant proportion of the key volatile compounds. This study establishes a scientific foundation for improving the quality of light-flavor Daqu liquor in different regions of China.
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Affiliation(s)
- Qi Yu
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China
| | - Feiyan Mou
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China
| | - Junwen Xiao
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China
| | - Cheng Zhan
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China
| | - Liang Li
- Huanghelou Distillery Co. Ltd, Wuhan, 430068, China
| | - Xu Chang
- Angel Yeast Co. Ltd, Yichang, 443200, China
| | | | - Maobin Chen
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China
| | - Xinrui Wang
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China
| | - Mei Chen
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China
| | - Shangling Fang
- Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industrial Microbiology, School of Food and Biological Engineering, Hubei University of Technology, 28 Nanli Road, Wuhan, 430068, China.
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19
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Qu C, Peng L, Fei Y, Liang J, Bai W, Liu G. Screening ester-producing yeasts to fortify the brewing of rice-flavor Baijiu for enhanced aromas. Bioengineered 2023; 14:2255423. [PMID: 37715575 PMCID: PMC10506437 DOI: 10.1080/21655979.2023.2255423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 08/12/2023] [Accepted: 08/17/2023] [Indexed: 09/17/2023] Open
Abstract
To enhance the aromas in Guangdong rice-flavor Baijiu, ester-producing yeast was selected to fortify Baijiu brewing. Among eight kinds of ester-producing yeasts selected, Saccharomyces cerevisiae CM15 (CM15) that showed both the stronger ability to utilize substrates to produce esters and the excellent tolerance to industrially relevant stress factors was chosen. When CM15 was synergistically fermented with six kinds of Kojis from distilleries of rice-flavor liquor in Guangdong, the enhanced total esters had happened to the liquors brewing with the fortified four kinds of Kojis, especially with Koji F. When Koji F was fortified with CM15, the resultant Baijiu showed a higher esters proportion and a lower higher alcohol ratio than that of Baijiu brewed only with Koji F, with the content of ethyl acetate and ethyl lactate increasing by 25% and 214%, respectively. This study suggested that CM15 can be used as a functional microorganism to fortify Baijiu brewing, which might also be suitable for other traditional fermented foods.
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Affiliation(s)
- Chunyun Qu
- College of Light Industry and Food Sciences, Guangdong Key Laboratory of Science and Technology of Lingnan Special Food, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture, Guangzhou, China
| | - Liying Peng
- College of Light Industry and Food Sciences, Guangdong Key Laboratory of Science and Technology of Lingnan Special Food, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Yongtao Fei
- College of Light Industry and Food Sciences, Guangdong Key Laboratory of Science and Technology of Lingnan Special Food, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture, Guangzhou, China
| | - Jinglong Liang
- College of Light Industry and Food Sciences, Guangdong Key Laboratory of Science and Technology of Lingnan Special Food, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture, Guangzhou, China
| | - Weidong Bai
- College of Light Industry and Food Sciences, Guangdong Key Laboratory of Science and Technology of Lingnan Special Food, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture, Guangzhou, China
| | - Gongliang Liu
- College of Light Industry and Food Sciences, Guangdong Key Laboratory of Science and Technology of Lingnan Special Food, Zhongkai University of Agriculture and Engineering, Guangzhou, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture, Guangzhou, China
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20
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Pan F, Qiu S, Lv Y, Li D. Exploring the controllability of the Baijiu fermentation process with microbiota orientation. Food Res Int 2023; 173:113249. [PMID: 37803561 DOI: 10.1016/j.foodres.2023.113249] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 10/08/2023]
Abstract
Product quality and stability improvement is important for development of the Baijiu industry. Generally, Baijiu brewing is carried out in a spontaneous fermentation system mediated by microbiota. Thus, complexity and instability are major features. Due to the insufficient understanding of the mechanism for producing Baijiu, the precise control of the fermentation progress has still not been realized, ultimately affecting product quality and stability. The flavor of Baijiu is the most important factor in determining its quality and is formed by microbiota under the driving force of various physicochemical parameters, such as moisture, acidity, and temperature. Therefore, exploring the association among microbiota (core), physicochemical factors (reference) and flavor compounds (target) has become a key point to clarify the formation mechanism for the flavor quality of Baijiu. Daqu fermentation and liquor fermentation are the two major stages of Baijiu brewing. Daqu, distillers' grains, and pit mud, as the most important fermentation substrates of the microbiota respectively, provide a large number of functional microorganisms related to the flavor components. To this end, we reviewed the relevant research progress of microbiota diversity in different fermentation substrates and the interaction mechanisms among microbiota, physicochemical parameters, and flavor components in this paper. Moreover, a research hypothesis of precise control of the Baijiu fermentation process by building fermentation models based on this is proposed. The key point for this idea is the identification of core microbiota closely associated with the formation of key flavor components by multi-omics technology and the acquisition of culturable strains. With this foundation, fermentation models suitable for different brewing environments will be established by constructing synthetic microbiota, designing mathematical models, and determining key fermentation model parameters. The ultimate goal will be to effectively improve the quality and stability of Baijiu products through model regulation.
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Affiliation(s)
- Fengshuang Pan
- Province Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang 550025, China; College of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Shuyi Qiu
- Province Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang 550025, China; College of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Yiyi Lv
- Province Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang 550025, China; College of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Dounan Li
- Province Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang 550025, China; College of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China; Liquor Making Biological Technology and Application of key laboratory of Sichuan Province, Yibin 644000, China.
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21
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Hu P, Wang J, Ali U, Aziz T, Sameeh MY, Feng C. Comparative study on physicochemical properties, microbial composition, and the volatile component of different light flavor Daqu. Food Sci Nutr 2023; 11:5174-5187. [PMID: 37701186 PMCID: PMC10494650 DOI: 10.1002/fsn3.3476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/12/2023] [Accepted: 05/24/2023] [Indexed: 09/14/2023] Open
Abstract
Baijiu, a type of liquor, is known for its pure fragrance and softness. Its unique style is attributed to the complex microbial flora and flavor precursors found in Daqu. In order to elaborate the nature of light flavor Daqu to guide the baijiu production, four Daqu samples (DQ1, DQ2, DQ3, and DQ4) from Shanxi province were analyzed to determine their microbial structure, physicochemical properties, and volatile flavors using high-throughout put seqencing and headspace solid-phase microextraction/gas chromatography-mass spectrometry method in this study. The findings indicated that there were no noticeable variations in the water content and esterase activity of the four Daqu. However, the DQ2 sample had a higher acidity value and saccharifying enzyme activity, whereas DQ3 had the highest protease activity. The microbial community structure of the four Daqu was similar, with Lactobacillus and Streptophyta as the dominant bacteria, but the abundance of bacteria was different among the four Daqu. Issachenkia was a common dominant fungus genus in all samples. Rhizopus and Lichtemia were higher in DQ1 and DQ2, while Torulaspora, Aspergillus, and Candida were more prevalent in DQ4. A total of 27 volatile components were detected in the four Daqu, including esters, alcohols, ketones, aldehydes, and acids. DQ2 had the most volatile components and ethyl lactate and ethyl acetate were the most significant esters in the four samples. In conclusion, the physicochemical indicators of the four light flavor Daqu had distinct differences. There were significant variations in the abundance of bacteria and fungi, leading to differences in the volatile component content. These research findings can serve as a theoretical foundation for blending different light flavors Daqu and hold great significance in enhancing the quality of baijiu.
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Affiliation(s)
- Panpan Hu
- Department of Life ScienceLyuliang UniversityLyuliangShanxiChina
| | - Ji Wang
- College of Food Science and EngineeringShanxi Agricultural UniversityJinzhongShanxiChina
| | - Urooj Ali
- Department of BiotechnologyQuaid‐i‐Azam UniversityIslamabadPakistan
| | - Tariq Aziz
- School of Food and Biological EngineeringJiangsu UniversityZhenjiangJiangsuChina
| | - Manal Y. Sameeh
- Chemistry Department, Faculty of Applied Sciences, Al‐Leith University CollegeUmm Al‐Qura UniversityMeccaSaudi Arabia
| | - Caiping Feng
- Department of Life ScienceLyuliang UniversityLyuliangShanxiChina
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22
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Chen J, Pu D, Shi Y, Sun B, Guo H, Li K, Zhang Y. Characterization of the Key Aroma Compounds in Different Yeast Proteins by GC-MS/O, Sensory Evaluation, and E-Nose. Foods 2023; 12:3136. [PMID: 37628135 PMCID: PMC10452978 DOI: 10.3390/foods12163136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 07/27/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023] Open
Abstract
The unique odors of yeast proteins (YPs) are decisive for their application in meat substitutes. Sensory evaluation, electronic nose, and gas chromatography-mass spectrometry/olfactory (GC-MS/O) were combined to characterize the aroma profiles and aroma-active compounds of YPs. The sensory evaluation results indicate that the sweaty aroma had the strongest intensity in YP #10, followed by rice bran, sour, and plastic. The electronic nose could effectively distinguish the aroma differences among five YPs. A total of 27 aroma-active compounds in the five YPs were identified by GC-MS/O. The concentration of 2-methyl-propanoic acid (6.37 μg/kg), butanoic acid (47.46 μg/kg), 3-methyl-butanoic acid (22.50 μg/kg), and indole (943.40 μg/kg) in YP #10's aroma was higher than that of the other YPs. The partial least squares regression method results show that o-cresol, (3S)-3,7-dimethyloct-7-en-1-ol, benzyl alcohol, octanal, 2-methyl-propanoic acid, butanoic acid, 3-methyl-butanoic acid, hexanal, heptanal, and indole were predicted as the potential aroma-active compounds significantly contributing to the aroma profiles of the five YPs. Addition experiments confirmed that the overall aroma profile intensities of the five YP samples were extended with the addition of these ten compounds, verifying their significant contributions.
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Affiliation(s)
- Jiahui Chen
- China Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; (J.C.); (D.P.); (Y.S.); (B.S.)
- Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China
- Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Dandan Pu
- China Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; (J.C.); (D.P.); (Y.S.); (B.S.)
- Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China
- Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Yige Shi
- China Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; (J.C.); (D.P.); (Y.S.); (B.S.)
- Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China
- Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Baoguo Sun
- China Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; (J.C.); (D.P.); (Y.S.); (B.S.)
- Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China
- Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Hui Guo
- Hubei Provincial Key Laboratory of Yeast Function, 168 Chengdong Road, Yichang 443003, China; (H.G.); (K.L.)
| | - Ku Li
- Hubei Provincial Key Laboratory of Yeast Function, 168 Chengdong Road, Yichang 443003, China; (H.G.); (K.L.)
| | - Yuyu Zhang
- China Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; (J.C.); (D.P.); (Y.S.); (B.S.)
- Food Laboratory of Zhongyuan, Beijing Technology and Business University, Beijing 100048, China
- Key Laboratory of Flavor Science of China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
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23
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Li J, Zhang Q, Sun B. Chinese Baijiu and Whisky: Research Reservoirs for Flavor and Functional Food. Foods 2023; 12:2841. [PMID: 37569110 PMCID: PMC10417287 DOI: 10.3390/foods12152841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 07/20/2023] [Accepted: 07/22/2023] [Indexed: 08/13/2023] Open
Abstract
Baijiu is a traditional spirit with high reputation in the Chinese community, and whisky, on the other hand, is a renowned spirit in Western culture, with both contributing a major proportion to the consumption and revenue in the global spirit market. Interestingly, starting with similar raw materials, such as grains, diverse production methods lead to different organoleptic profiles. In addition, such enormous attention they attract renders them as a crucial part in food and the related industry. Therefore, great efforts are made in improving product quality and optimizing production processes, such as flavor enhancement, facility development, and deep utilization of byproducts. Given the huge impacts and great involvements of these spirits in the general food industry, research focusing on either spirit is of referential significance for other relevant fields. With the aim of facilitating such collaboration, this review discusses the current research status, in a comparative manner, of both spirits in respect to key production processes-oriented sensory and flavor analysis, deep utilization of byproducts, and spirit-derived functional food investigations. Finally, the internal correlations based on the abovementioned criteria are identified, with research prospects proposed.
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Affiliation(s)
- Jinchen Li
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; (Q.Z.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory for Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Qiuyu Zhang
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; (Q.Z.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory for Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Baoguo Sun
- Key Laboratory of Geriatric Nutrition and Health, Beijing Technology and Business University, Ministry of Education, Beijing 100048, China; (Q.Z.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory for Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
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24
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Wang H, Zhang M, Qu C, Fei Y, Liang J, Bai W, Zhao W, Xiao G, Liu G. Characterization and Correlation of Microbiota and Higher Alcohols Based on Metagenomic and Metabolite Profiling during Rice-Flavor Baijiu Fermentation. Foods 2023; 12:2720. [PMID: 37509812 PMCID: PMC10379614 DOI: 10.3390/foods12142720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/14/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023] Open
Abstract
Higher alcohol, as an inevitable product of fermentation, plays an important role in the flavor and quality of Baijiu. However, the relationship between the complex microbial metabolism and the formation of higher alcohols in rice-flavor Baijiu was not clear. To investigate the relationship between microorganisms and higher alcohol production, two fermentation mashes inoculated with starters from Heyuan Jinhuangtian Liquor Co., Ltd. (Heyuan, China) as JM and Guangdong Changleshao Co., Ltd. (Meizhou, China) as CM, respectively, with significant differences in higher alcohol profiles during rice-flavor Baijiu fermentation were selected. In general, higher alcohols presented a rapid accumulation during the early fermentation stages, especially in JM, with higher and faster increases than those in CM. As for their precursors including amino acids, pyruvic acid and ketoacids, complex variations were observed during the fermentation. Metagenomic results indicated that Saccharomyces cerevisiae and Rhizopus microsporus were the microorganisms present throughout the brewing process in JM and CM, and the relative abundance of R. microsporus in JM was significantly higher than that in CM. The results of higher alcohol metabolism in JM may contribute to the regulation of higher alcohols in rice-flavor Baijiu.
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Affiliation(s)
- Hong Wang
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Minqian Zhang
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Chunyun Qu
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Yongtao Fei
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Jinglong Liang
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Weidong Bai
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Wenhong Zhao
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Gengsheng Xiao
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Gongliang Liu
- Guangdong Provincial Key Laboratory of Lingnan Specialty Food Science and Technology, College of Light Industry and Food Technology, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Green Processing and Intelligent Manufacturing of Lingnan Specialty Food, Ministry of Agriculture and Rural Affairs, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Academy of Contemporary Agricultural Engineering Innovations, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
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25
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Duan XH, Li Y, Li HW, Wu Y. Accurate ethanol determination in Chinese Baijiu based on red-emitted carbon quantum dots (CQDs) and a simple pH correction. Food Chem 2023; 428:136733. [PMID: 37429243 DOI: 10.1016/j.foodchem.2023.136733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 06/16/2023] [Accepted: 06/24/2023] [Indexed: 07/12/2023]
Abstract
The quality control of Baijiu is necessary including ethanol content. In this work, red-emitted carbon quantum dots based on p-phenylenediamine (PPD-CQDs) were fabricated for accurate determination of ethanol in Baijiu. The good linear response of PPD-CQDs to ethanol-water solution (E-Ws; 20-80 vol%) offered the potential for ethanol determination in practice. However, further application of this procedure to Baijiu resulted in a certain deviation. After excluding interference from most of the ingredients involved, a simple pH correction on Baijiu made application of the process practicable. The red-emission of PPD-CQDs supported analysis of Baijiu with different flavors and ethanol monitoring. Therefore, a quick-response fluorescence method was established for Baijiu ethanol determination; this method can be applied to the many varieties of Chinese Baijiu available and also has potential for use in other alcoholic beverages.
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Affiliation(s)
- Xin-He Duan
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, PR China; Institute of Theoretical Chemistry, College of Chemistry, Jilin University, No. 2 Liutiao Road, Changchun 130023, PR China
| | - Yi Li
- China Light Industry Enterprises Investment and Development Association, 22B. Fuwai Avenue, Xicheng District, Beijing 100833, PR China
| | - Hong-Wei Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, PR China; Institute of Theoretical Chemistry, College of Chemistry, Jilin University, No. 2 Liutiao Road, Changchun 130023, PR China
| | - Yuqing Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, PR China; Institute of Theoretical Chemistry, College of Chemistry, Jilin University, No. 2 Liutiao Road, Changchun 130023, PR China.
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26
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Wu M, Xu Y, Dai M, Li W, Zhang C, Li X, Sun B. Butyriproducens baijiuensis BJN0003: a potential new member of the family Oscillospiraceae isolated from Chinese Baijiu. 3 Biotech 2023; 13:205. [PMID: 37223001 PMCID: PMC10200727 DOI: 10.1007/s13205-023-03624-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 05/10/2023] [Indexed: 05/25/2023] Open
Abstract
Acid-producing bacteria are one kind of crucial species for Baijiu fermentation. The strain BJN0003 with the ability of producing butyric acid was isolated from the cellar mud of Baijiu, and the 16S rRNA gene sequence similarity was 94.2% to its most closely related type species Caproicibacterium lactiferaments JNU-WLY1368T, less than the threshold value of 94.5% for distinguishing genera. Furthermore, the genome of BJN0003 showed a length of 2,458,513 bp and a DNA G + C content of 43.3% through high throughput sequence. BJN0003 exhibited whole-genome average nucleotide identity value of 68.9% to the most closely related species, while the whole-genome digital DNA-DNA hybridization value was only 23.1%, which were both below the delineation thresholds of species. These results indicated BJN0003 could represent a potential novel species of a new genus of the family Oscillospiraceae, and was proposed the name as Butyriproducens baijiuensis. In addition, gene annotation and metabolic analysis showed that BJN0003 harbored the metabolic pathway of converting glucose to butyric acid. The discovery of the new species provided bacterial resource for Baijiu production and the revealing of genetic characteristics would promote the investigation of acid synthesis during Baijiu manufacturing process. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03624-w.
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Affiliation(s)
- Mengqin Wu
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering of China General Chamber of Commerce, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
| | - Youqiang Xu
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering of China General Chamber of Commerce, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
| | - Mengqi Dai
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering of China General Chamber of Commerce, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
| | - Weiwei Li
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering of China General Chamber of Commerce, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
| | - Chengnan Zhang
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering of China General Chamber of Commerce, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
| | - Xiuting Li
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering of China General Chamber of Commerce, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
| | - Baoguo Sun
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering of China General Chamber of Commerce, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, No. 33, Fucheng Road, Haidian District, Beijing, 100048 China
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27
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Investigation on the interaction between 1,3-dimethyltrisulfide and aroma-active compounds in sesame-flavor baijiu by Feller Additive Model, Odor Activity Value and Partition Coefficient. Food Chem 2023; 410:135451. [PMID: 36652795 DOI: 10.1016/j.foodchem.2023.135451] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 01/03/2023] [Accepted: 01/07/2023] [Indexed: 01/13/2023]
Abstract
The interaction between 1,3-dimethyltrisulfide and aroma-active compounds in sesame-flavor baijiu was evaluated by Feller's additive model and Odor Activity Value Approach, and the reason for the interaction can promote the release of fruity and caramel aromas of ethyl caproate, ethyl was explored by the Partition Coefficient Approach. The interaction results indicated that 1,3-dimethyltrisulfide caprate and furan-2-ylmethanol. Others showed masking effect. The Partition Coefficient showed that the effect of 1,3-dimethyltrisulfide on the volatility of esters was one of the reasons for the interaction affecting the flavor perception, and the volatility of ethyl esters with longer carbon chains at high phase ratio (PRs) is more likely to be promoted. Besides, the prediction model was initially proposed: y = 2.0112 ln(x) + 0.1461, which indicated that esters with the olfactory threshold lower than 33.80 μg/L are more likely to have positive effects with 1,3-dimethyltrisulfide, the negative effect is more likely to occur conversely.
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Wei XL, Jiang L, Shi QL, Mo ZH. Machine-learning-assisted SERS nanosensor platform toward chemical fingerprinting of Baijiu flavors. Mikrochim Acta 2023; 190:207. [PMID: 37165167 DOI: 10.1007/s00604-023-05794-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 04/10/2023] [Indexed: 05/12/2023]
Abstract
A novel fingerprinting platform for multiplex detection of flavor molecules in Baijiu was developed by using a surface-enhanced Raman scattering (SERS) nanosensor array in combination with machine learning. The SERS sensors were constructed by core-shell Fe3O4@Ag nanoparticles modified with molecules carrying end-groups of hydroxyl, pyridyl, methyl, and amino, respectively, which interacted with flavors and led to changes in the sensors' spectra. All the Raman spectra acquired from the nanosensor array contacting with the sample were concatenated into a single SERS super-spectrum, representing the flavor fingerprint which was recognized through machine learning. Principal component analysis, support vector machine, and partial least squares were utilized to build classification and quantitation models for predictive analyses. The SERS nanosensor array was successfully used for fingerprinting ten typical flavors in Baijiu including four esters, three alcohols, and three acids, with an accuracy of 100%, linear detection ranges over two orders of magnitude, and limits of detection ranging from 3.45 × 10-3 mg/L of phenylethyl acetate to 1.21 × 10-2 mg/L of ethyl hexanoate. It was also demonstrated that satisfactory accuracies (recoveries) ranging from 96.2 to 104% and relative standard deviations ranging from 0.65 to 2.78% were obtained for the simultaneous quantification of 3-methylbutyl acetate and phenylethyl acetate in eighteen Baijiu samples of three flavor types including sauce flavor, strong flavor, and light flavor. Compared with the existing detection techniques, this chemical fingerprinting platform is easy to use, highly sensitive, and can perform multiplex detection, which has great potential for practical applications.
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Affiliation(s)
- Xiao-Lan Wei
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China.
| | - Lan Jiang
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China
| | - Qin-Ling Shi
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China
| | - Zhi-Hong Mo
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400067, China.
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Stanzer D, Hanousek Čiča K, Blesić M, Smajić Murtić M, Mrvčić J, Spaho N. Alcoholic Fermentation as a Source of Congeners in Fruit Spirits. Foods 2023; 12:1951. [PMID: 37238769 PMCID: PMC10217768 DOI: 10.3390/foods12101951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Fermentation is a crucial process in the production of alcoholic beverages such as spirits, which produces a number of volatile compounds due to the metabolic activities of yeast. These volatile compounds, together with the volatile components of the raw materials and the volatile compounds produced during the distillation and aging process, play a crucial role in determining the final flavor and aroma of spirits. In this manuscript, we provide a comprehensive overview of yeast fermentation and the volatile compounds produced during alcoholic fermentation. We will establish a link between the microbiome and volatile compounds during alcoholic fermentation and describe the various factors that influence volatile compound production, including yeast strain, temperature, pH, and nutrient availability. We will also discuss the effects of these volatile compounds on the sensory properties of spirits and describe the major aroma compounds in these alcoholic beverages.
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Affiliation(s)
- Damir Stanzer
- Faculty of Food Technology and Biotechnology, University of Zagreb, 10000 Zagreb, Croatia; (D.S.); (K.H.Č.)
| | - Karla Hanousek Čiča
- Faculty of Food Technology and Biotechnology, University of Zagreb, 10000 Zagreb, Croatia; (D.S.); (K.H.Č.)
| | - Milenko Blesić
- Faculty of Agriculture and Food Sciences, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina; (M.B.); (M.S.M.); (N.S.)
| | - Mirela Smajić Murtić
- Faculty of Agriculture and Food Sciences, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina; (M.B.); (M.S.M.); (N.S.)
| | - Jasna Mrvčić
- Faculty of Food Technology and Biotechnology, University of Zagreb, 10000 Zagreb, Croatia; (D.S.); (K.H.Č.)
| | - Nermina Spaho
- Faculty of Agriculture and Food Sciences, University of Sarajevo, 71000 Sarajevo, Bosnia and Herzegovina; (M.B.); (M.S.M.); (N.S.)
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Towards robustness and sensitivity of rapid Baijiu (Chinese liquor) discrimination using Raman spectroscopy and chemometrics: Dimension reduction, machine learning, and auxiliary sample. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Zhang J, Deng J, Zheng J, Ma Y, Luo H, Luo X, Hou C, Huo D. Organic acid-induced triple fluorescent emission carbon quantum dots identification of distilled liquor. Food Chem 2023; 422:136080. [PMID: 37150116 DOI: 10.1016/j.foodchem.2023.136080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 03/22/2023] [Accepted: 03/28/2023] [Indexed: 04/07/2023]
Abstract
An acid-sensitive carbon dot fluorescence sensing array was investigated for the differentiated recognition of distilled spirits. Due to the electrostatic interactions between CDs and organic acids, organic acids affect the protonation and fluorescence properties of CDs, which in turn modify the CDs triple fluorescence emission. The regular linear variation of the fluorescence sensor was found under acidic conditions (3.0 < pH < 6.2). A comprehensive study of acids with selectivity, different concentrations (0.1 mM, 1 mM, 10 mM, 40 mM), different types (8 species) and mixed acids (formic acid and acetic acid), and good quantification capability for acetic acid (0.01-1 mM). Demonstrating good recognition ability of the sensor array for complex analyte. On this basis, the fluorescence sensor array was applied to the classification and recognition of liquors. LDA has realized the identification of 16 kinds of Baijiu and 21 kinds of distilled liquors with an accuracy of 100%.
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Affiliation(s)
- Jing Zhang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Jiaxi Deng
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Jia Zheng
- Strong-flavor Baijiu Solid-state Fermentation Key Laboratory of China Light Industry, Wuliangye Group Co., Ltd, Yibin 644007, PR China
| | - Yi Ma
- Liquor Making Biology Technology and Application of Key Laboratory of Sichuan Province, College of Bioengineering, Sichuan University of Science and Engineering, 188 University Town, Yi bin 644000, PR China
| | - Huibo Luo
- Liquor Making Biology Technology and Application of Key Laboratory of Sichuan Province, College of Bioengineering, Sichuan University of Science and Engineering, 188 University Town, Yi bin 644000, PR China
| | - Xiaogang Luo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
| | - Changjun Hou
- Liquor Making Biology Technology and Application of Key Laboratory of Sichuan Province, College of Bioengineering, Sichuan University of Science and Engineering, 188 University Town, Yi bin 644000, PR China.
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China; Chongqing Key Laboratory of Bio-perception & Intelligent Information Processing, School of Microelectronics and Communication Engineering, Chongqing University, Chongqing 400044, PR China.
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Revelation for the Influence Mechanism of Long-Chain Fatty Acid Ethyl Esters on the Baijiu Quality by Multicomponent Chemometrics Combined with Modern Flavor Sensomics. Foods 2023; 12:foods12061267. [PMID: 36981194 PMCID: PMC10048143 DOI: 10.3390/foods12061267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/02/2023] [Accepted: 03/12/2023] [Indexed: 03/19/2023] Open
Abstract
Long-chain fatty acid ethyl ester (LCFAEEs) is colorless and has a weak wax and cream aroma. It can be used as an intermediate for the synthesis of emulsifiers, and stabilizers and be applied in the production of flavor essence. It is also an important trace component in Baijiu and is attributed to making a contribution to the quality of Baijiu, but its distribution in Baijiu has not been clear, and its influence mechanisms on Baijiu quality have not been systematically studied. Therefore, the distribution of LCFAEEs for Baijiu in different years (2014, 2015, 2018, and 2022), different grades (premium, excellent, and level 1; note: here Baijiu grade classification was based on Chinese standard (GB/T 10781) and enterprise classification standard), and different sun exposure times (0, 6, 12, 20, 30, and 50 days) was uncovered. Thus, in this study, the effect of LCFAEEs on the quality of Baijiu was comprehensively and objectively proven by combining modern flavor sensomics and multicomponent chemometrics. The results showed that with the increase in Baijiu storage time, the concentration of LCFAEEs increased significantly in Baijiu (4.38–196.95 mg/L, p < 0.05). The concentration of LCFAEEs in level 1 Baijiu was significantly higher than that in excellent and premium Baijiu (the concentration ranges of ET, EP, EO, E9, E912, and E91215 were: 0.27–2.31 mg/L, 0.75–47.41 mg/L, 0.93–1.80 mg/L, 0.98–12.87 mg/L, 1.01–27.08 mg/L, and 1.00–1.75 mg/L, respectively, p < 0.05). With the increase in sun exposure time, the concentration of LCFAEEs in the Baijiu first increased significantly and then decreased significantly (4.38–5.95 mg/L, p < 0.05). As the flavor sensomics showed, the concentrations of LCFAEEs in Baijiu bodies were significantly correlated with the Baijiu taste sense (inlet taste, aroma sensation in the mouth), as well as with the evaluation after drinking (maintaining taste) (p < 0.05, r > 0.7). Based on the above, LCFAEEs are critical factors for Baijiu flavor thus, it is essential to explore a suitable concentration of LCFAEEs in Baijiu to make Baijiu’s quality more ideal.
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Niu Y, Zhao W, Xiao Z, Zhu J, Xiong W, Chen F. Characterization of aroma compounds and effects of amino acids on the release of esters in Laimao baijiu. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:1784-1799. [PMID: 36260337 DOI: 10.1002/jsfa.12281] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/28/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Laimao baijiu is a typical soy-sauce aroma-type baijiu in China. Amino acids are non-volatile compounds in baijiu and are beneficial to human health. Aroma is one of the important indicators that are used to evaluate the quality of baijiu. The interaction between aroma-active compounds and non-volatile compounds can also affect the release of aroma compounds. In this study, we identified the active-aroma compounds and amino acids in Laimao baijiu by stir bar sorptive extraction (SBSE), gas chromatography-olfactometry (GC-O), gas chromatography-mass spectrometry (GC-MS), and ultra-performance liquid chromatography-mass spectrometry (UPLC-MS). The interaction between amino acids and key esters was investigated by sensory analysis and partition coefficients. RESULTS A total of 63 aroma compounds and 21 amino acids were identified. Twenty-one esters were identified from them as major aroma-active ester compounds with odor activity values ≥ 1. Finally, sensory analysis revealed that l-alanine had a significant effect on the strength of the aromas of esters, suggesting that low concentrations of amino acids were more likely to promote the release of esters and high concentrations were more likely to inhibit this. The partition coefficient can be a good explanation for this phenomenon. CONCLUSION l-Alanine can significantly affect the aroma intensity of key ester aroma compounds in Laimao baijiu, and the effects of different concentrations of amino acids are different. This work shows that amino acids, as non-volatile compounds, have a regulatory effect on the release of aroma compounds in alcoholic beverages, which may provide new technical support for the aroma modulation of alcoholic beverages. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Yunwei Niu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
| | - Wenqi Zhao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
| | - Zuobing Xiao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Jiancai Zhu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
| | - Wen Xiong
- China Tobacco Yunnan Industrial Co. LTD, Kunming, China
| | - Feng Chen
- Department of Food, Nutrition and Packaging Sciences, Clemson University, Clemson, South Carolina, USA
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Zeng X, Mo Z, Zheng J, Wei C, Dai Y, Yan Y, Qiu S. Effects of biofilm and co-culture with Bacillus velezensis on the synthesis of esters in the strong flavor Baijiu. Int J Food Microbiol 2023; 394:110166. [PMID: 36921483 DOI: 10.1016/j.ijfoodmicro.2023.110166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/30/2023] [Accepted: 03/01/2023] [Indexed: 03/11/2023]
Abstract
Biofilm plays an important role in resisting the adverse environment, improving the taste and texture, and promoting the synthesis of flavor substances. However, to date, the findings on the effect of biofilm and dominating bacteria Bacillus on the ester synthesis in the Baijiu field have been largely lacked. Therefore, the objectives of the present study were to primarily isolate biofilm-producing microbes in the fermented grains, evaluate the stress tolerance capacity, and unveil the effect of biofilm and co-culture with Bacillus on the ester synthesis in the strong flavor Baijiu. Results indicated that after isolation and evaluation of stress-tolerance capacity, bacterial strain BG-5 and yeast strains YM-21 and YL-10 were demonstrated as mediate or strong biofilm-producing microbes and were identified as Bacillus velezensis, Saccharomycopsis fibuligera, and Zygosaccharomyces bailii, respectively. Solid phase microextraction/gas chromatography-mass spectrometer indicated that biofilm could enhance the diversity of esters while reduce the contents of ester. The scanning electron microscopy showed an inhibitory effect of B. velezensis on the growth of S. fibuligera, further restraining the production of esters. Taken together, both biofilm and B. velezensis influence the ester synthesis process. The present study is the first to reveal the biofilm-producing microorganisms in fermented grains and to preliminarily investigate the effect of biofilm on the ester synthesis in the Baijiu field.
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Affiliation(s)
- Xiangyong Zeng
- College of Liquor and Food Engineering, Guizhou University, Guiyang City 550025, China; Guizhou Provincial Key Laboratory of Fermentation and Biopharmacy, Guizhou University, Guiyang City 550025, China.
| | - Zhenni Mo
- College of Liquor and Food Engineering, Guizhou University, Guiyang City 550025, China; Department of Light Industry and Chemical Engineering, Guizhou Light Industry Technical College, Guiyang City 550025, China
| | - Jia Zheng
- Wuliangye Yibin Co Ltd, No.150 Minjiang West Road, Yibin City 644007, China
| | - Chaoyang Wei
- College of Liquor and Food Engineering, Guizhou University, Guiyang City 550025, China; Guizhou Provincial Key Laboratory of Fermentation and Biopharmacy, Guizhou University, Guiyang City 550025, China
| | - Yifeng Dai
- College of Liquor and Food Engineering, Guizhou University, Guiyang City 550025, China; Guizhou Provincial Key Laboratory of Fermentation and Biopharmacy, Guizhou University, Guiyang City 550025, China
| | - Yan Yan
- College of Liquor and Food Engineering, Guizhou University, Guiyang City 550025, China; Guizhou Provincial Key Laboratory of Fermentation and Biopharmacy, Guizhou University, Guiyang City 550025, China
| | - Shuyi Qiu
- College of Liquor and Food Engineering, Guizhou University, Guiyang City 550025, China; Guizhou Provincial Key Laboratory of Fermentation and Biopharmacy, Guizhou University, Guiyang City 550025, China
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Liu QR, Zhang XJ, Zheng L, Meng LJ, Liu GQ, Yang T, Lu ZM, Chai LJ, Wang ST, Shi JS, Shen CH, Xu ZH. Machine learning based age-authentication assisted by chemo-kinetics: Case study of strong-flavor Chinese Baijiu. Food Res Int 2023; 167:112594. [PMID: 37087223 DOI: 10.1016/j.foodres.2023.112594] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 01/02/2023] [Accepted: 02/14/2023] [Indexed: 02/18/2023]
Abstract
The aged Chinese liquor, Baijiu, is highly valued for its superior organoleptic qualities. However, since age-authentication method and aging-mechanism elucidation of Baijiu is still in the exploratory stage, high-quality aged Baijiu is often replaced by lower-quality, less-aged product with fraudulent mislabeling. Authentic high-quality strong-flavor Baijiu was analyzed by gas chromatography-mass spectrometry. Total esters decreased with aging, while acids, alcohols, aldehydes, ketones, terpenes, pyrazines increased. Although concentrations of partial compounds showed non-monotonic profiling during aging, a close positive linear correlation (R2 = 0.7012) of Baijiu Evenness index (0.55-0.59) with aging time was observed, indicating a more balanced composition in aged Baijiu. The reaction quotient (Qc) of each esterification, calculated by the corresponding reactant and product concentration, approached to the corresponding thermodynamic equilibrium constant Kc. This result demonstrated that the spontaneous transformation driven by thermodynamics explained part of the aging compositional profiling. Furthermore, an aging-related feature selection and an age-authentication method were established based on three models combined with five ranking algorithms. Forty-one key features, including thirty-six compound concentrations, four esterification Qc values and the Evenness index were selected out. The age-authentication based on neural network using forty-one input features accurately predicted the age group of Baijiu samples (F1 = 100 %). These findings have deepened understanding of the Baijiu aging mechanism and provided a novel, effective approach for age-authentication of Baijiu and other liquors.
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Characterization of the Key Aroma-active Compounds in Qingke Baijiu by Application of the Sensory Approach. J Food Compost Anal 2023. [DOI: 10.1016/j.jfca.2023.105196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Jia W, Ma R. Cross-modal interactions caused by nonvolatile compounds derived from fermentation, distillation and aging to harmonize flavor. Crit Rev Food Sci Nutr 2023; 64:6686-6713. [PMID: 36718555 DOI: 10.1080/10408398.2023.2172714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Chinese liquor (Baijiu), unique liquor produced in China and among the six world-renowned distilled liquors, is never a follower of others. Flavor is the essential characteristics of Baijiu which largely affect consumers' acceptance and selection. Though the flavor of Baijiu has been widely explored, the majority of research and review mainly focused on the volatile compounds in Baijiu. The research status on detection, source and flavor contribution of nonvolatile compounds in Baijiu is clarified in the article based on available literatures and knowledge. The nonvolatile composition of Baijiu is the result of contributions of different degrees from each step involved in the production process. Gas chromatography-mass spectrometry combined with derivatization and ultra-high performance liquid chromatography coupled to mass spectrometry is the generally adopted methods for the characterization of nonvolatile compounds in Baijiu. Certain nonvolatile compounds are taste-active compounds. Cross-modal interactions caused by nonvolatile composition could affect the aroma intensity of flavor compounds in Baijiu. The work provides numerous incompletely explored but useful points for the flavor chemistry of Baijiu and lays a theoretical foundation for the better understanding of Baijiu flavor and rapid development of Baijiu industry.
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Affiliation(s)
- Wei Jia
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
- Shaanxi Research Institute of Agricultural Products Processing Technology, Xi'an, China
| | - Rutian Ma
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
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Xia Y, Zhou W, Du Y, Wang Y, Zhu M, Zhao Y, Wu Z, Zhang W. Difference of microbial community and gene composition with saccharification function between Chinese nongxiangxing daqu and jiangxiangxing daqu. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:637-647. [PMID: 36053854 DOI: 10.1002/jsfa.12175] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 08/07/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The saccharification function of daqu is usually characterized by two indicators: saccharification power and liquefaction power. Daqu provides diverse microbial saccharifying enzymes for hydrolyzing carbohydrate in Baijiu fermenting grain. Obviously, the composition of microbial communities and enzymatic genes in different types of daqu cultured at varied temperatures is different. However, these differences in saccharification function are not fully understood. RESULTS The findings suggested that the saccharification power and liquefaction power of jiangxiangxing daqu were lower than those of nongxiangxing daqu throughout the production process. We employed metagenomics to find evidence that a mode of multiple saccharifying enzymes involving amylase, cellulase and hemicellulase originating from various microbes exists in daqu. Moreover, a totality of 541 related differential genes were obtained, some of which, annotated to genera of Aspergillus, Lactobacillus and Weissella, were significantly enriched (P < 0.05) in nongxiangxing daqu, while others, annotated to thermophilic genera of Virgibacillus, Bacillus, Kroppenstedtia and Saccharopolyspora, showed a higher relative abundance in jiangxiangxing daqu (P < 0.05). CONCLUSION Various microbial communities of daqu showed diverse saccharification capacity during cultivation of different parameters. These findings are helpful in comprehending the saccharification functional genes of daqu. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Yu Xia
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
| | - Wen Zhou
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
| | - Yake Du
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
| | - Yan Wang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
| | - Min Zhu
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
| | - Yajiao Zhao
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
| | - Zhengyun Wu
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
| | - Wenxue Zhang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, China
- School of Liquor-Making Engineering, Sichuan University Jinjiang College, Meishan, China
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Ge J, Qi Y, Yao W, Yuan D, Hu Q, Ma C, Volmer DA, Liu CQ. Identification of Trace Components in Sauce-Flavor Baijiu by High-Resolution Mass Spectrometry. Molecules 2023; 28:molecules28031273. [PMID: 36770938 PMCID: PMC9920578 DOI: 10.3390/molecules28031273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/20/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
Sauce-flavor Baijiu is one of the most complex and typical types of traditional Chinese liquor, whose trace components have an important impact on its taste and quality. Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) is one of the most favorable analytical tools to reveal trace molecular components in complex samples. This study analyzed the chemical diversity of several representative sauce-flavor Baijiu using the combination of electrospray ionization (ESI) and FT-ICR MS. The results showed that ESI+ and ESI- exhibited different chemical features characteristic of trace components. Overall, sauce-flavor Baijiu was dominated by CHO class compounds, and the main specific compound types were aliphatic, highly unsaturated with low oxygen, and peptide-like compounds. The mass spectral parameters resolved by FT-ICR MS of several well-known brands were relatively similar, whereas the greatest variability was observed from an internally supplied brand. This study provides a new perspective on the mass spectrometry characteristics of trace components of sauce-flavor Baijiu and offers a theoretical foundation for further optimization of the gradients in Baijiu.
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Affiliation(s)
- Jinfeng Ge
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Yulin Qi
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
- Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin 300072, China
- Correspondence:
| | - Wenrui Yao
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Daohe Yuan
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Qiaozhuan Hu
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Chao Ma
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
| | - Dietrich A. Volmer
- Department of Chemistry, Humboldt-Universität zu Berlin, 12489 Berlin, Germany
| | - Cong-Qiang Liu
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin 300072, China
- Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Tianjin University, Tianjin 300072, China
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Zhao J, Xu Y, Lu H, Zhao D, Zheng J, Lin M, Liang X, Ding Z, Dong W, Yang M, Li W, Zhang C, Sun B, Li X. Molecular mechanism of LIP05 derived from Monascus purpureus YJX-8 for synthesizing fatty acid ethyl esters under aqueous phase. Front Microbiol 2023; 13:1107104. [PMID: 36713181 PMCID: PMC9877431 DOI: 10.3389/fmicb.2022.1107104] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 12/20/2022] [Indexed: 01/13/2023] Open
Abstract
Fatty acid ethyl esters are important flavor chemicals in strong-flavor Baijiu. Monascus purpureus YJX-8 is recognized as an important microorganism for ester synthesis in the fermentation process. Enzyme LIP05 from YJX-8 can efficiently catalyze the synthesis of fatty acid ethyl esters under aqueous phase, but the key catalytic sites affecting esterification were unclear. The present work combined homology modeling, molecular dynamics simulation, molecular docking and site-directed mutation to analyze the catalytic mechanism of LIP05. Protein structure modeling indicated LIP05 belonged to α/β fold hydrolase, contained a lid domain and a core catalytic pocket with conserved catalytic triad Ser150-His215-Asp202, and the oxyanion hole composed of Gly73 and Thr74. Ile30 and Leu37 of the lid domain were found to affect substrate specificity. The π-bond stacking between Tyr116 and Tyr149 played an important role in stabilizing the catalytic active center of LIP05. Tyr116 and Ile204 determined the substrate spectrum by composing the substrate-entrance channel. Residues Leu83, Ile204, Ile211 and Leu216 were involved in forming the hydrophobic substrate-binding pocket through steric hindrance and hydrophobic interaction. The catalytic mechanism for esterification in aqueous phase of LIP05 was proposed and provided a reference for clarifying the synthesis of fatty acid ethyl esters during the fermentation process of strong-flavor Baijiu.
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Affiliation(s)
- Jingrong Zhao
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Youqiang Xu
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Hongyun Lu
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Dong Zhao
- Wuliangye Yibin Co., Ltd., Yibin, Sichuan, China
| | - Jia Zheng
- Wuliangye Yibin Co., Ltd., Yibin, Sichuan, China
| | - Mengwei Lin
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Xin Liang
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Ze Ding
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,School of Food and Health, Beijing Technology and Business University (BTBU), Beijing, China
| | - Wenqi Dong
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,School of Food and Health, Beijing Technology and Business University (BTBU), Beijing, China
| | - Maochen Yang
- School of Food and Health, Beijing Technology and Business University (BTBU), Beijing, China
| | - Weiwei Li
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Chengnan Zhang
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Baoguo Sun
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Xiuting Li
- Key Laboratory of Brewing Microbiome and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing, China,Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China,School of Food and Health, Beijing Technology and Business University (BTBU), Beijing, China,*Correspondence: Xiuting Li,
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41
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Tang Q, Chen X, Huang J, Zhang S, Qin H, Dong Y, Wang C, Wang X, Wu C, Jin Y, Zhou R. Mechanism of Enhancing Pyrazines in Daqu via Inoculating Bacillus licheniformis with Strains Specificity. Foods 2023; 12:foods12020304. [PMID: 36673396 PMCID: PMC9858619 DOI: 10.3390/foods12020304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Despite the importance of pyrazines in Baijiu flavor, inoculating functional strains to increase the contents of pyrazine in Daqu and how those interact with endogenic communities is not well characterized. The effects of inoculating Bacillus licheniformis with similar metabolic capacity on pyrazine and community structure were assessed in the Daqu complex system and compared with traditional Daqu. The fortification strategy increased the volatile metabolite content of Daqu by 52.40% and the pyrazine content by 655.99%. Meanwhile, results revealed that the pyrazine content in Daqu inoculated isolate J-49 was 2.35-7.41 times higher than isolate J-41. Both isolates have the almost same capability of 2,3-butanediol, a key precursor of pyrazine, in pure cultured systems. Since the membrane fatty acids of isolate J-49 contain unsaturated fatty acids, it enhances the response-ability to withstand complex environmental pressure, resulting in higher pyrazine content. PICRUSt2 suggested that the increase in pyrazine was related to the enzyme expression of nitrogen metabolism significantly increasing, which led to the enrichment of NH4+ and 2,3-butanediol (which increased by 615.89%). These results based on multi-dimensional approaches revealed the effect of functional bacteria enhancement on the attribution of Daqu, laid a methodological foundation regulating the microbial community structure and enhanced the target products by functional strains.
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Affiliation(s)
- Qiuxiang Tang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Xiaoru Chen
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Jun Huang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Suyi Zhang
- Luzhou Laojiao Company Limited, Luzhou 646000, China
| | - Hui Qin
- Luzhou Laojiao Company Limited, Luzhou 646000, China
| | - Yi Dong
- Luzhou Laojiao Company Limited, Luzhou 646000, China
| | - Chao Wang
- Luzhou Laojiao Company Limited, Luzhou 646000, China
| | - Xiaojun Wang
- Luzhou Laojiao Company Limited, Luzhou 646000, China
| | - Chongde Wu
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Yao Jin
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Rongqing Zhou
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
- National Engineering Research Centre of Solid-State Brewing, Luzhou 646000, China
- Correspondence: ; Tel.: +86-28-85406149
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42
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Wu J, Peng H, Li L, Wen L, Chen X, Zong X. FT-IR combined with chemometrics in the quality evaluation of Nongxiangxing baijiu. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 284:121790. [PMID: 36081190 DOI: 10.1016/j.saa.2022.121790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 08/05/2022] [Accepted: 08/24/2022] [Indexed: 06/15/2023]
Abstract
Recently, there has been an increasing demand for developing a reliable method to assess the quality of liquor in the baijiu industry quickly and accurately. The present study sought to establish a strategy for rapid quantitative analysis of the primary flavor components in Nongxiangxing baijiu. Under the experimental conditions, 7 of the 10 major flavor components in Nongxiangxing baijiu could be quantified effectively, such as ethyl butyrate (R2p = 0.9942), ethyl lactate (R2p = 0.9438), n-butanol (R2p = 0.9048), isobutanol (R2p = 0.9696), acetic acid (R2p = 0.9600), butyric acid (R2p = 0.8448), caproic acid (R2p = 0.9971). This result indicates that FT-IR combined with quantitative chemometric modeling could be a potential approach for rapid quality assessment of Nongxiangxing baijiu. Overall, this study provides a theoretical basis for subsequent related studies on Nongxiangxing baijiu.
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Affiliation(s)
- Jianhang Wu
- Liquor Brewing Biotechnology and Application Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Yibin 644000, Sichuan, China; College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, Sichuan, China.
| | - Houbo Peng
- Liquor Brewing Biotechnology and Application Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Yibin 644000, Sichuan, China; College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, Sichuan, China.
| | - Li Li
- College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, Sichuan, China.
| | - Lei Wen
- Liquor Brewing Biotechnology and Application Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Yibin 644000, Sichuan, China; College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, Sichuan, China.
| | - Xiaodie Chen
- College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, Sichuan, China.
| | - Xuyan Zong
- Liquor Brewing Biotechnology and Application Key Laboratory of Sichuan Province, Sichuan University of Science and Engineering, Yibin 644000, Sichuan, China; College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, Sichuan, China.
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43
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Xu Y, Wu M, Niu J, Lin M, Zhu H, Wang K, Li X, Sun B. Characteristics and Correlation of the Microbial Communities and Flavor Compounds during the First Three Rounds of Fermentation in Chinese Sauce-Flavor Baijiu. Foods 2023; 12:foods12010207. [PMID: 36613423 PMCID: PMC9818360 DOI: 10.3390/foods12010207] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/23/2022] [Accepted: 12/29/2022] [Indexed: 01/05/2023] Open
Abstract
Sauce-flavor Baijiu is representative of solid-state fermented Baijiu. It is significant to deeply reveal the dynamic changes of microorganisms in the manufacturing process and their impact on the formation of flavor chemicals correlated with the quality of Baijiu. Sauce-flavor Baijiu manufacturing process can be divided into seven rounds, from which seven kinds of base Baijius are produced. The quality of base Baijiu in the third round is significantly better than that in the first and second rounds, but the mystery behind the phenomenon has not yet been revealed. Based on high-throughput sequencing and flavor analysis of fermented grains, and correlation analysis, the concentrations of flavor chemicals in the third round of fermented grains were enhanced, including esters hexanoic acid, ethyl ester; octanoic acid, ethyl ester; decanoic acid, ethyl ester; dodecanoic acid, ethyl ester; phenylacetic acid, ethyl ester; 3-(methylthio)-propionic acid ethyl ester; acetic acid, phenylethyl ester; hexanoic acid, butyl ester, and other flavor chemicals closely related to the flavor of sauce-flavor Baijiu, such as tetramethylpyrazine. The changes in flavor chemicals should be an important reason for the quality improvement of the third round of base Baijiu. Correlation analysis showed that ester synthesis was promoted by the bacteria genus Lactobacillus and many low abundances of fungal genera, and these low abundances of fungal genera also had important contributions to the production of tetramethylpyrazine. Meanwhile, the degrading metabolic pathway of tetramethylpyrazine was investigated, and the possible microorganisms were correlated. These results clarified the base Baijiu quality improvement of the third round and helped to provide a theoretical basis for improving base Baijiu quality.
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Affiliation(s)
- Youqiang Xu
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
| | - Mengqin Wu
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Jialiang Niu
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Mengwei Lin
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
| | - Hua Zhu
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
- Beijing Huadu Wine Food Limited Liability Company, Beijing 102212, China
| | - Kun Wang
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
- Beijing Huadu Wine Food Limited Liability Company, Beijing 102212, China
| | - Xiuting Li
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
- Correspondence:
| | - Baoguo Sun
- Key Laboratory of Brewing Microbiology and Enzymatic Molecular Engineering, China General Chamber of Commerce, Beijing Technology and Business University, Beijing 100048, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
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44
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Wu J, Chen R, Li X, Fu Z, Xian C, Zhao W, Zhao C, Wu X. Comprehensive identification of key compounds in different quality grades of soy sauce-aroma type baijiu by HS-SPME-GC-MS coupled with electronic nose. Front Nutr 2023; 10:1132527. [PMID: 36960200 PMCID: PMC10028209 DOI: 10.3389/fnut.2023.1132527] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 02/14/2023] [Indexed: 03/09/2023] Open
Abstract
In the production of soy sauce-aroma type baijiu (SSAB), the quality of base liquor significantly affects the finished liquor's quality. Moreover, low-quality liquor may cause health problems. The different quality grades of base liquor were analyzed to investigate the relationship between the quality and the key compounds in SSAB. In this study, samples were evaluated by the sensory and further analyzed by headspace solid-phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC-MS) coupled with electronic nose (E-nose). First, by sensory evaluation, the sauce, floral and fruity, fermented aromas and taste indicators (softness, fullness, harmony, purity and persistence) were positively correlated with the quality grade of the base liquor. The E-nose could distinguish the different quality grades of base liquor well. Second, differential compounds were identified via untargeted metabolome based on the HS-SPME-GC-MS. 16 common differential compounds were shared in the base liquor from different fermentation rounds, including 11 esters, 1 alcohol, 2 aldehydes and 2 ketones. It was found that the higher the quality grade of the base liquor, the richer the content of aromatics, alcohols, aldehydes and ketones. The principal component analysis (PCA) biplots of the differential compounds in the different quality grades of base liquor indicated that the superior-grade base liquor has a strong fruity aroma. By correlation analysis of the differential compounds and sensors responses of E-nose, furfuryl ethyl ether, butanoic acid ethyl ester, isopentyl hexanoate, nonanoic acid ethyl ester and 3-methyl-1-butanol had a significant effect on the response intensity of E-nose sensors. In the present study, the key differential compounds between the different quality grades of base liquor were identified, and the sensory differences between the base liquor were digitized.
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Affiliation(s)
- Junhai Wu
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, Guiyang, China
| | - Renyuan Chen
- Guizhou Academy of Liquor Quality Inspection and Testing, Renhuai, China
| | - Xiaobo Li
- Guizhou Academy of Liquor Quality Inspection and Testing, Renhuai, China
| | - Zheyang Fu
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, Guiyang, China
| | - Chun Xian
- Guizhou Academy of Liquor Quality Inspection and Testing, Renhuai, China
| | - Wenwu Zhao
- Guizhou Academy of Liquor Quality Inspection and Testing, Renhuai, China
| | - Cheng Zhao
- Guizhou Academy of Liquor Quality Inspection and Testing, Renhuai, China
| | - Xinying Wu
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, Guiyang, China
- *Correspondence: Xinying Wu,
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45
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Xu P, Yang H, Tian L, Guo Q, Chen H, Wei X, Liu Y, He Z, Zhang J, Luo J, Li D, Guan T. Function and safety evaluation of Staphylococcus epidermidis with high esterase activity isolated from strong flavor Daqu. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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46
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Zhang W, Xiao Y, Deng R, Wang Y, Qiu Y, Sun Q, Luo A. An electric-field instrument for accelerated aging to improve flavor of Chinese Baijiu. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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47
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Liang Y, Yan X, Xu J, Liu Y, Xie K, Li J, Zhan Q. An efficient transformation method for tannin-containing sorghum. PeerJ 2023; 11:e15066. [PMID: 36935918 PMCID: PMC10022505 DOI: 10.7717/peerj.15066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/23/2023] [Indexed: 03/16/2023] Open
Abstract
Background Tannins are the main bottlenecks restricting the transformation efficiency of plants. Hongyingzi is a special tannin-containing sorghum cultivar used in brewing. Methods In this study, a highly efficient microprojectile transformation system for tannin-containing sorghum was successfully exploited using immature embryos (IEs) of Hongyingzi as explants. Results Hongyingzi presented two types of calli. Type II calli were found to be the most suitable and effective explants for transformation. After optimization of the geneticin (G418) concentration and tissue culture medium, an average transformation frequency of 27% was achieved. Molecular analyzis showed that all transgenic plants were positive and showed transgenes expression. The inheritance analyzis confirmed that the transgenes could be inherited into the next generation. Thus, we successfully established an efficient transformation system for tannin-containing sorghum and demonstrated the possibility of breaking the restriction imposed by tannins in plants.
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Affiliation(s)
- Yuan Liang
- College of Agricultural, Anhui Science and Technology University, Fengyang, Anhui, China
| | - Xuehui Yan
- College of Agricultural, Anhui Science and Technology University, Fengyang, Anhui, China
| | - Jingyi Xu
- College of Agricultural, Anhui Science and Technology University, Fengyang, Anhui, China
| | - Yanlong Liu
- College of Agricultural, Anhui Science and Technology University, Fengyang, Anhui, China
| | - Ke Xie
- Research Center of Biology and Agriculture, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Jieqin Li
- College of Agricultural, Anhui Science and Technology University, Fengyang, Anhui, China
| | - Qiuwen Zhan
- College of Agricultural, Anhui Science and Technology University, Fengyang, Anhui, China
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48
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Ren T, Su W, Mu Y, Qi Q, Zhang D. Study on the correlation between microbial communities with physicochemical properties and flavor substances in the Xiasha round of cave-brewed sauce-flavor Baijiu. Front Microbiol 2023; 14:1124817. [PMID: 36937267 PMCID: PMC10014610 DOI: 10.3389/fmicb.2023.1124817] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 01/30/2023] [Indexed: 03/05/2023] Open
Abstract
The Chishui River basin is the main production area of the sauce-flavor Baijiu. Due to the particularity of sauce-flavor Baijiu technology, a large site of workshops needs to be built for brewing and storage. Therefore, used the natural karst caves of Guizhou province to manufacture the sauce-flavor Baijiu, which has enriched the connotation of sauce-flavor Baijiu and saved valuable land resources. In this study, the fermentation grains in the seven stages during the Xiasha round of the cave-brewed sauce-flavor Baijiu (CBSB) were detected using a combination of physicochemical analysis, Headspace solid-phase microextraction gas chromatography-mass detection, and Illumina HiSeq sequencing methods. The results showed Unspecified_Leuconostocaceae, Weissella, Unspecified_Bacillaceae, Saccharomycopsis, Thermomyces, and Unspecified_Phaffomycetaceae were the main bacterial and fungal genera in the stacking fermentation (SF). In the cellar fermentation (CF), the Lactobacillus, Unspecified_Lactobacillaceae, Thermoactinomyces, Saccharomycopsis, Unspecified_Phaffomycetaceae, and Wickerhamomyces were the main bacterial and fungal genera. A total of 72 volatiles were detected in the fermented grains. Linear discriminant analysis Effect Size (LEfSe) identified 23 significantly different volatile metabolites in the fermentation process, including 7 esters, 6 alcohols, 4 acids, 3 phenols, 1 hydrocarbon, and 2 other compounds. Redundancy analysis was used to explore the correlation between dominant microbial genera and physicochemical properties. Starch was the main physicochemical property affecting microbial succession in the SF. Acidity, moisture, and reducing sugar were the main driving factors of microbial succession in the CF. The Pearson correlation coefficient revealed the correlation between dominant microbial genera and significantly different volatile flavor substances. A total of 18 dominant microbial genera were associated with significantly different volatile metabolites, Lactobacillus, Weissella, Wickerhamomyces, and Aspergillus were shown to play crucial roles in metabolite synthesis. On this basis, a metabolic map of the dominant microbial genera was established. This study provides a theoretical basis for the production and quality control of sauce-flavor Baijiu brewed in natural karst caves and lays a foundation for studying the link between flavor formation and microorganisms.
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Affiliation(s)
- Tingting Ren
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang, China
| | - Wei Su
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang, China
- *Correspondence: Wei Su
| | - Yingchun Mu
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
| | - Qi Qi
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
| | - Dangwei Zhang
- School of Liquor and Food Engineering, Guizhou University, Guiyang, China
- Guizhou Provincial Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guizhou University, Guiyang, China
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49
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Synergy of physicochemical reactions occurred during aging for harmonizing and improving flavor. Food Chem X 2022; 17:100554. [PMID: 36845494 PMCID: PMC9944979 DOI: 10.1016/j.fochx.2022.100554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/20/2022] [Accepted: 12/23/2022] [Indexed: 12/25/2022] Open
Abstract
Numerous counterfeit vintage Baijiu are widely distributed in the market driven by economic interest which disturb the market economic rules and damage the reputation of particular Baijiu brand. Found on the situation, the Baijiu system variation during aging period, aging mechanisms and discrimination strategies for vintage Baijiu are systematically illuminated. The aging mechanisms of Baijiu cover volatilization, oxidation, association, esterification, hydrolysis, formation of colloid molecules and catalysis by metal elements or other raw materials dissolved from storage vessels. The discrimination of aged Baijiu has been performed by electrochemical method, colorimetric sensor array or component characterization coupled with multivariate analysis. Nevertheless, the characterization of non-volatile compounds in aged Baijiu is deficient. Further research on the aging principles, more easy-operation and low-cost discrimination strategies for aged Baijiu are imperative. The above information is favorable to better understand the aging process and mechanisms of Baijiu, and promote the development of artificial aging techniques.
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50
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Dynamic Transcriptome Analysis Reveals Transcription Factors Involved in the Synthesis of Ethyl Acetate in Aroma-Producing Yeast. Genes (Basel) 2022; 13:genes13122341. [PMID: 36553608 PMCID: PMC9777979 DOI: 10.3390/genes13122341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/01/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Ethyl acetate is an important flavor element that is a vital component of baijiu. To date, the transcription factors that can help identify the molecular mechanisms involved in the synthesis of ethyl acetate have not been studied. In the present study, we sequenced and assembled the Wickerhamomyces anomalus strain YF1503 transcriptomes to identify transcription factors. We identified 307 transcription factors in YF1503 using high-throughput RNA sequencing. Some transcription factors, such as C2H2, bHLH, MYB, and bZIP, were up-regulated, and these might play a role in ethyl acetate synthesis. According to the trend of ethyl acetate content, heat map results and STEM, twelve genes were selected for verification of expression levels using quantitative real-time PCR. This dynamic transcriptome analysis presents fundamental information on the transcription factors and pathways that are involved in the synthesis of ethyl acetate in aroma-producing yeast. Of significant interest is the discovery of the roles of various transcription factor genes in the synthesis of ethyl acetate.
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