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He G, Gao L, Deng Y, Jiao W, Wang J, Wei Y, Zhou J. Microbial succession in different years of pit mud from a distillery in Sichuan for Nong-xiang Baijiu fermentation. Food Sci Biotechnol 2024; 33:3083-3092. [PMID: 39220311 PMCID: PMC11364727 DOI: 10.1007/s10068-024-01558-4] [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: 09/28/2023] [Revised: 01/18/2024] [Accepted: 02/29/2024] [Indexed: 09/04/2024] Open
Abstract
Microbial community and succession of 5-, 20-, and 50-year pit mud (PM) were uncovered in this study. The results showed that Bacteroidetes, Firmicutes and Ascomycota were dominant phyla in these PM samples. Interestingly, most sequences could not be classified into fungal taxa at the genus level by UNITE Database, the diversity and richness of bacteria in these PMs were higher than that of fungi. It was noteworthy that both 20-year and 50-year PMs exhibited higher abundances of Caproiciproducens and Petrimonas when compared with 5-year PM. While higher proportions of Lactobacillus and Acinetobacter were observed in the 5-year PM. Furfermore, these PMs microbiota mainly involved biosynthesis, degradation, and generation of precursor metabolites, which contributed to carbon cycling of Nong-xiang Baijiu anaerobic fermentation. Taken together, lactic acid bacteria depletion and caproic acid bacteria accumulation might be an important succession trend of PM microbiota during the long-term fermentation of Chinese Nong-xiang Baijiu. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-024-01558-4.
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Affiliation(s)
- Guiqiang He
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010 Sichuan China
- Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010 Sichuan China
| | - Lei Gao
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010 Sichuan China
| | - Yue Deng
- Luzhou Vocational and Technical College, Luzhou, 646000 Sichuan China
| | - Wenjing Jiao
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010 Sichuan China
| | - Jiahui Wang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010 Sichuan China
| | - Yanxia Wei
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010 Sichuan China
- Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010 Sichuan China
| | - Jian Zhou
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010 Sichuan China
- Engineering Research Center of Biomass Materials, Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010 Sichuan China
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2
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Dai Y, Yu L, Ao J, Wang R. Analyzing the differences and correlations between key metabolites and dominant microorganisms in different regions of Daqu based on off-target metabolomics and high-throughput sequencing. Heliyon 2024; 10:e36944. [PMID: 39286152 PMCID: PMC11402928 DOI: 10.1016/j.heliyon.2024.e36944] [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: 04/29/2024] [Revised: 08/19/2024] [Accepted: 08/25/2024] [Indexed: 09/19/2024] Open
Abstract
Daqu is usually produced in an open environment, which makes its quality unstable. The microbial community of Daqu largely determines its quality. Therefore, in order to improve the fermentation characteristics of Daqu, samples were collected from Jinsha County (MT1), Xishui County (MT2), and Maotai Town (MT3) in Guizhou Province to explore the microbial diversity of Daqu and its impact on Daqu's metabolites.Off-target metabolomics was used to detect metabolites, and high-throughput sequencing was used to detect microorganisms. Metabolomics results revealed that MT1 and MT2 had the highest relative fatty acid content, whereas MT3 had the highest organooxygen compound content. Principal component analysis and partial least squares discriminant analysis revealed significant differences in the metabolites among the three groups, followed by the identification of 33 differential metabolites (key metabolites) filtered using the criteria of variable importance in projection >1 and p < 0.001. According to the microbiological results, Proteobacteria was the dominant bacteria phylum in three samples. Gammaproteobacteria was the dominant class in MT1(26.84 %) and MT2(36.54 %), MT3 is Alphaproteobacteria(25.66 %). And Caulobacteraceae was the dominant family per the abundance analysis, MTI was 24.32 %, MT2 and MT3 were 33.71 % and 24.40 % respectively. Three samples dominant fungi phylum were Ascomycota, and dominant fungi family were Thermoascaceae. Pseudomonas showed a significant positive connection with various fatty acyls, according to correlation analyses between dominant microorganisms (genus level) and key metabolites. Fatty acyls and Thermomyces showed a positive correlation, but Thermoascus had the reverse relation. These findings offer a theoretical framework for future studies on the impact of metabolites on Baijiu quality during fermentation.
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Affiliation(s)
- Yijie Dai
- School of Biology and Environmental Engineering, Guiyang University, Guiyang, 550005, China
- Key Laboratory for Critical Degradation Technologies of Pesticide Residues in Superior Agricultural Products, Guiyang University, Guiyang, 550005, China
| | - Lei Yu
- Key Laboratory for Critical Degradation Technologies of Pesticide Residues in Superior Agricultural Products, Guiyang University, Guiyang, 550005, China
| | - Jintao Ao
- School of Biology and Environmental Engineering, Guiyang University, Guiyang, 550005, China
| | - Rui Wang
- Key Laboratory for Critical Degradation Technologies of Pesticide Residues in Superior Agricultural Products, Guiyang University, Guiyang, 550005, China
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3
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Xian S, Zhao F, Huang X, Liu X, Zhang Z, Zhou M, Shen G, Li M, Chen A. Effects of Pre-Dehydration Treatments on Physicochemical Properties, Non-Volatile Flavor Characteristics, and Microbial Communities during Paocai Fermentation. Foods 2024; 13:2852. [PMID: 39272618 PMCID: PMC11395261 DOI: 10.3390/foods13172852] [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: 08/20/2024] [Revised: 08/30/2024] [Accepted: 09/06/2024] [Indexed: 09/15/2024] Open
Abstract
The paocai industry faces challenges related to the production of large volumes of high-salinity and acidic brine by-products. Maintaining paocai quality while reducing brine production is crucial. This study utilized high-throughput sequencing technology to analyze microbial changes throughout the fermentation process, along with the non-volatile flavor compounds and physicochemical properties, to assess the impact of hot-air and salt-pressing pre-dehydration treatments on paocai quality. The findings indicate that pre-dehydration of raw material slowed the fermentation process but enhanced the concentration of non-volatile flavor substances, including free amino acids and organic acids. Hot-air pre-dehydration effectively reduced initial salinity to levels comparable to those in high-salinity fermentation of fresh vegetables. Furthermore, pre-dehydration altered microbial community structures and simplified inter-microbial relationships during fermentation. However, the key microorganisms such as Lactobacillus, Weissella, Enterobacter, Wallemia, Aspergillus, and Kazachstania remained consistent across all groups. Additionally, this study found that biomarkers influenced non-volatile flavor formation differently depending on the treatment, but these substances had minimal impact on the biomarkers and showed no clear correlation with high-abundance microorganisms. Overall, fermenting pre-dehydrated raw materials presents an environmentally friendly alternative to traditional paocai production.
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Affiliation(s)
- Shuang Xian
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Feng Zhao
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Xinyan Huang
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Xingyan Liu
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Zhiqing Zhang
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Man Zhou
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Guanghui Shen
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Meiliang Li
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
| | - Anjun Chen
- College of Food Science, Sichuan Agricultural University, Ya'an 625014, China
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4
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Sun X, Yu L, Xiao M, Zhang C, Zhao J, Narbad A, Chen W, Zhai Q, Tian F. Exploring Core fermentation microorganisms, flavor compounds, and metabolic pathways in fermented Rice and wheat foods. Food Chem 2024; 463:141019. [PMID: 39243605 DOI: 10.1016/j.foodchem.2024.141019] [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: 04/09/2024] [Revised: 08/19/2024] [Accepted: 08/25/2024] [Indexed: 09/09/2024]
Abstract
The unique flavors of fermented foods significantly influence consumer purchasing choices, prompting widespread scientific interest in the flavor development process. Fermented rice and wheat foods are known for their unique flavors and they occupy an important place in the global diet. Many of these are produced on an industrial scale using starter cultures, whereas others rely on spontaneous fermentation, homemade production, or traditional activities. Microorganisms are key in shaping the sensory properties of fermented products through different metabolic pathways, thus earning the title "the essence of fermentation." Therefore, this study systematically summarizes the key microbial communities and their interactions that contribute positively to iconic fermented rice and wheat foods, such as steamed bread, bread, Mifen, and rice wine. This study revealed the mechanism by which these core microbial communities affect flavor and revealed the strategies of core microorganisms and related enzymes to enhance flavor during fermentation.
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Affiliation(s)
- Xiaoxuan Sun
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Leilei Yu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Meifang Xiao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Chengcheng Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Jianxing Zhao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Arjan Narbad
- Quadram Institute Bioscience, Norwich Research Park Colney, Norwich, Norfolk NR4 7UA, UK
| | - Wei Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Qixiao Zhai
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Fengwei Tian
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
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5
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Wu Y, Xu P, Qiu X, Mao Y, Yu J, Tian L, Li Y, Zhang J, Zhu X, Liu Y, Shang H, Guan T. Inoculation of Zaopei with biofortification: Inducing variation in community structure and improving flavor compounds in Nongxiangxing baijiu. J Food Sci 2024; 89:4730-4744. [PMID: 38922885 DOI: 10.1111/1750-3841.17187] [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: 03/26/2024] [Revised: 06/05/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024]
Abstract
The deterioration of the quality of raw liquor caused by the low content of ethyl hexanoate in Nongxiangxing baijiu has become a pervasive problem in the baijiu industry. Therefore, this study attempted to increase the synthesis of ethyl hexanoate by microorganisms with high esterase activity to increase Zaopei fermentation. The results showed that biofortification was a feasible and important way to improve the quality of the raw liquor and increase the ethyl hexanoate content. Adding Bacillus subtilis, Staphylococcus epidermidis, and Millerozyma farinosa for biofortified fermentation disturbed the microbial community structure of Zaopei and increased the abundance of Wickerhamomyces, Saccharomyces, and Thermoascus. The contents of ethyl hexanoate, ethyl valerate, ethyl caprylate, and ethyl heptanoate also increased noticeably in baijiu. The results of E-nose and sensory analysis tested and verified that the baijiu in the fortified group had better flavor characteristics.
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Affiliation(s)
- Yijiao Wu
- College of Food and Biological Engineering, Xihua University, Chengdu, China
- Food Microbiology Key Laboratory of Sichuan Province, Chengdu, China
| | - Pei Xu
- College of Food and Biological Engineering, Xihua University, Chengdu, China
- Food Microbiology Key Laboratory of Sichuan Province, Chengdu, China
| | - Xianping Qiu
- Sichuan Quanxing Liquor Co., Ltd., Chengdu, China
| | - Yichen Mao
- Xinjiang Kaiduhe Liquor Co., Ltd, Hejing, China
| | - Jianshen Yu
- Sichuan Quanxing Liquor Co., Ltd., Chengdu, China
| | - Lei Tian
- College of Food and Biological Engineering, Xihua University, Chengdu, China
- Food Microbiology Key Laboratory of Sichuan Province, Chengdu, China
| | - Yanzhong Li
- Sichuan Jiangkouchun Longding Liquor Co., Ltd, Bazhong, China
| | - Juan Zhang
- Sichuan Jiangkouchun Longding Liquor Co., Ltd, Bazhong, China
| | - Xiangting Zhu
- College of Food and Biological Engineering, Xihua University, Chengdu, China
- Food Microbiology Key Laboratory of Sichuan Province, Chengdu, China
| | - Ying Liu
- College of Food and Biological Engineering, Xihua University, Chengdu, China
- Food Microbiology Key Laboratory of Sichuan Province, Chengdu, China
| | | | - Tongwei Guan
- College of Food and Biological Engineering, Xihua University, Chengdu, China
- Food Microbiology Key Laboratory of Sichuan Province, Chengdu, China
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Shi G, Fang C, Xing S, Guo Y, Li X, Han X, Lin L, Zhang C. Heterogenetic mechanism in high-temperature Daqu fermentation by traditional craft and mechanical craft: From microbial assembly patterns to metabolism phenotypes. Food Res Int 2024; 187:114327. [PMID: 38763631 DOI: 10.1016/j.foodres.2024.114327] [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: 01/30/2024] [Revised: 03/31/2024] [Accepted: 04/16/2024] [Indexed: 05/21/2024]
Abstract
The mechanical process has a widely usage in large-scale high-temperature Daqu (HTD) enterprises, however, the quality of the mechanical HTD is gapped with the HTD by traditional process. Currently, the understanding of the mechanism behind this phenomenon is still over-constrained. To this end, the discrepancies in fermentation parameters, enzymatic characteristics, microbial assembly and succession patterns, metabolic phenotypes were compared between traditional HTD and mechanical HTD in this paper. The results showed that mechanical process altered the temperature ramping procedure, resulting in a delayed appearance of the peak temperature. This alteration shifted the assembly pattern of the initial bacterial community from determinism to stochasticity, while having no impact on the stochastic assembly pattern of the fungal community. Concurrently, mechanical pressing impeded the accumulation of arginase, tetramethylpyrazine, trimethylpyrazine, 2-methoxy-4-vinylphenol, and butyric acid, as the target dissimilarities in metabolism between traditional HTD and mechanical HTD. Pearson correlation analysis combined with the functional prediction further demonstrated that Bacillus, Virgibacillus, Oceanobacillus, Kroppenstedtia, Lactobacillus, and Monascus were mainly contributors to metabolic variances. The Redundancy analysis (RDA) of fermented environmental factors on functional ASVs indicated that high temperature, high acid and low moisture were key positive drivers on the microbial metabolism for the characteristic flavor in HTD. Based on these results, heterogeneous mechanisms between traditional HTD and mechanical HTD were explored, and controllable metabolism targets were as possible strategies to improve the quality of mechanical HTD.
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Affiliation(s)
- Gailing Shi
- 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
| | - Chao Fang
- 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
| | - Shuang Xing
- 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
| | - Ying Guo
- 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
| | - 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
| | - Xiao Han
- 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
| | - 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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7
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Wu C, Hu J, Xie D, Fan E, Yang J, You X, Cheng P, Huang W, Hu F, Wang D. Comparison of physicochemical parameters, microbial community composition and flavor substances during mechanical and traditional brewing process of Jiang-flavor baijiu. Food Sci Biotechnol 2024; 33:1909-1919. [PMID: 38752119 PMCID: PMC11091018 DOI: 10.1007/s10068-023-01483-y] [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: 10/15/2023] [Accepted: 11/09/2023] [Indexed: 05/18/2024] Open
Abstract
Mechanized, automated and intelligent brewing is an important trend of innovation and transition in Jiang-flavor baijiu industry. In this study, physicochemical parameters, microbial community composition and flavor substances during 3rd round heap fermentation between mechanical and traditional workshop were investigated and compared based on traditional culturable methods, high-throughput sequencing technology and gas chromatography analysis. The dominant bacterial and fungal genera were consistent between the two workshops, but mechanized brewing had a significant impact on the composition of fungal communities. Rhodococcus and Monascus were special genera in mechanical workshop. The interaction relationship between physicochemical parameters and dominant microorganisms in mechanized workshop was different from traditional workshop as well. This study provided a scientific basis for further analyzing the mechanism of mechanized brewing of Jiang-flavor baijiu. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-023-01483-y.
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Affiliation(s)
- Cheng Wu
- Guizhou Xijiu Co., LTD., Xishui, 564600 Guizhou China
- Engineering Technology Research Center of Jiang-Flavor Baijiu Intelligent Brewing, China National Light Industry Council, Xishui, 564600 Guizhou China
| | - Jianfeng Hu
- Guizhou Xijiu Co., LTD., Xishui, 564600 Guizhou China
- Engineering Technology Research Center of Jiang-Flavor Baijiu Intelligent Brewing, China National Light Industry Council, Xishui, 564600 Guizhou China
| | - Dan Xie
- Guizhou Xijiu Co., LTD., Xishui, 564600 Guizhou China
- Engineering Technology Research Center of Jiang-Flavor Baijiu Intelligent Brewing, China National Light Industry Council, Xishui, 564600 Guizhou China
| | - Endi Fan
- Guizhou Xijiu Co., LTD., Xishui, 564600 Guizhou China
- Engineering Technology Research Center of Jiang-Flavor Baijiu Intelligent Brewing, China National Light Industry Council, Xishui, 564600 Guizhou China
| | - Junlin Yang
- Guizhou Xijiu Co., LTD., Xishui, 564600 Guizhou China
- Engineering Technology Research Center of Jiang-Flavor Baijiu Intelligent Brewing, China National Light Industry Council, Xishui, 564600 Guizhou China
| | - Xiaolong You
- Guizhou Xijiu Co., LTD., Xishui, 564600 Guizhou China
- Engineering Technology Research Center of Jiang-Flavor Baijiu Intelligent Brewing, China National Light Industry Council, Xishui, 564600 Guizhou China
| | - Pingyan Cheng
- Guizhou Xijiu Co., LTD., Xishui, 564600 Guizhou China
- Engineering Technology Research Center of Jiang-Flavor Baijiu Intelligent Brewing, China National Light Industry Council, Xishui, 564600 Guizhou China
| | - Wei Huang
- Guizhou Xijiu Co., LTD., Xishui, 564600 Guizhou China
- Engineering Technology Research Center of Jiang-Flavor Baijiu Intelligent Brewing, China National Light Industry Council, Xishui, 564600 Guizhou China
| | - Feng Hu
- Guizhou Xijiu Co., LTD., Xishui, 564600 Guizhou China
- Engineering Technology Research Center of Jiang-Flavor Baijiu Intelligent Brewing, China National Light Industry Council, Xishui, 564600 Guizhou China
| | - Diqiang Wang
- Guizhou Xijiu Co., LTD., Xishui, 564600 Guizhou China
- Engineering Technology Research Center of Jiang-Flavor Baijiu Intelligent Brewing, China National Light Industry Council, Xishui, 564600 Guizhou China
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8
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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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9
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Huang Y, Li D, Mu Y, Zhu Z, Wu Y, Qi Q, Mu Y, Su W. Exploring the heterogeneity of community and function and correspondence of "species-enzymes" among three types of Daqu with different fermentation peak-temperature via high-throughput sequencing and metagenomics. Food Res Int 2024; 176:113805. [PMID: 38163713 DOI: 10.1016/j.foodres.2023.113805] [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: 09/13/2023] [Revised: 11/21/2023] [Accepted: 12/02/2023] [Indexed: 01/03/2024]
Abstract
The enzyme activity of Daqu is an important prerequisite for defining it as a Baijiu starter. However, little is known about the functional species related to enzymes in different types of Daqu at the metagenomic level. Therefore, we analyzed the differences in enzymatic properties, microbial composition and metabolic function of three types of Daqu, namely high-, medium- and low-temperature Daqus (HTD, MTD and LTD), by combining chemical feature and multi-dimensional sequencing. The results showed that both liquefaction, saccharification, fermentation and esterification powers were remarkably weaker in HTD compared to MTD and LTD. Totally, 30 bacterial and 5 fungal phyla were identified and significant differences in community structures were also observed among samples, with Brevibacterium/Microascus, Pseudomonas, and Lactobacillus/Saccharomycopsis identified as biomarkers for HTD, MTD and LTD, respectively. Additionally, the importance of deterministic assembly in bacterial communities was proportional to the fermentation peak-temperature, while stochastic assembly dominated in fungal ones. Metagenomics analysis indicated eukaryota (>80 %, mainly Ascomycota) predominated in HTD and MTD while bacteria (54.3 %, mainly Actinobacteriota) were more abundant in LTD. However, the functional profiles and pathways of MTD and LTD were more similar, and the synthesis and metabolism of carbohydrates and amino acids were the crucial biological functions of all samples. Finally, the relationship between species and enzymes in different samples was constructed and the functional species in LTD and MTD were more diverse than HTD, which elucidated the functional species associated with enzyme activity in each type of Daqu. These results will greatly enrich our understanding of the core functional species in three typical Daqu, which provide available information for rational regulation of Daqu quality and the Baijiu fermentation.
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Affiliation(s)
- Ying Huang
- Department of Brewing Engineering, Moutai Institute, Renhuai 564507, China
| | - Dong Li
- Department of Food Science and Engineering, Moutai Institute, Renhuai 564507, China
| | - Yu Mu
- Department of Food Science and Engineering, Moutai Institute, Renhuai 564507, China.
| | - Zhiyu Zhu
- Kweichow Moutai Distillery Co. Ltd., Renhuai 564501, China
| | - Yuzhang Wu
- Quality Monitoring & Evaluation Center, Moutai Institute, Renhuai 564507, China
| | - Qi Qi
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Yingchun Mu
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Wei Su
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
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10
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Tanahashi R, Nishimura A, Nguyen M, Sitepu I, Fox G, Boundy-Mills K, Takagi H. Isolation of Yeast Strains with Higher Proline Uptake and Their Applications to Beer Fermentation. J Fungi (Basel) 2023; 9:1137. [PMID: 38132738 PMCID: PMC10744042 DOI: 10.3390/jof9121137] [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: 10/27/2023] [Revised: 11/18/2023] [Accepted: 11/23/2023] [Indexed: 12/23/2023] Open
Abstract
Although proline is the most or second most abundant amino acid in wort and grape must, it is not fully consumed by the yeast Saccharomyces cerevisiae during alcoholic fermentation, unlike other amino acids. Our previous studies showed that arginine, the third most abundant amino acid in wort, inhibits the utilization of proline in most strains of S. cerevisiae. Furthermore, we found that some non-Saccharomyces yeasts utilized proline in a specific artificial medium with arginine and proline as the only nitrogen source, but these yeasts were not suitable for beer fermentation due to their low alcohol productivity. For yeasts to be useful for brewing, they need to utilize proline and produce alcohol during fermentation. In this study, 11 S. cerevisiae strains and 10 non-Saccharomyces yeast strains in the Phaff Yeast Culture Collection were identified that utilize proline effectively. Notably, two of these S. cerevisiae strains, UCDFST 40-144 and 68-44, utilize proline and produce sufficient alcohol in the beer fermentation model used. These strains have the potential to create distinctive beer products that are specifically alcoholic but with a reduction in proline in the finished beer.
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Affiliation(s)
- Ryoya Tanahashi
- Institute for Research Initiatives, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma 630-0192, Nara, Japan;
- Department of Food Science and Technology, University of California Davis, One Shields Ave, Davis, CA 95616, USA; (M.N.); (I.S.); (G.F.); (K.B.-M.)
| | - Akira Nishimura
- Institute for Research Initiatives, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma 630-0192, Nara, Japan;
- Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma 630-0192, Nara, Japan
| | - Minh Nguyen
- Department of Food Science and Technology, University of California Davis, One Shields Ave, Davis, CA 95616, USA; (M.N.); (I.S.); (G.F.); (K.B.-M.)
| | - Irnayuli Sitepu
- Department of Food Science and Technology, University of California Davis, One Shields Ave, Davis, CA 95616, USA; (M.N.); (I.S.); (G.F.); (K.B.-M.)
| | - Glen Fox
- Department of Food Science and Technology, University of California Davis, One Shields Ave, Davis, CA 95616, USA; (M.N.); (I.S.); (G.F.); (K.B.-M.)
| | - Kyria Boundy-Mills
- Department of Food Science and Technology, University of California Davis, One Shields Ave, Davis, CA 95616, USA; (M.N.); (I.S.); (G.F.); (K.B.-M.)
| | - Hiroshi Takagi
- Institute for Research Initiatives, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma 630-0192, Nara, Japan;
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11
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Xu JZ, Zhang YY, Zhang WG. Correlation between changes in flavor compounds and microbial community ecological succession in the liquid fermentation of rice wine. World J Microbiol Biotechnol 2023; 40:17. [PMID: 37981595 DOI: 10.1007/s11274-023-03844-5] [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: 08/13/2023] [Accepted: 11/16/2023] [Indexed: 11/21/2023]
Abstract
Microorganisms play an important role in regulating flavor compounds in rice wine, whereas we often don't understand how did they affect flavor compounds. Here, the relations between flavor compounds and microbial community ecological succession were investigated by monitoring flavor compounds and microbial community throughout the fermentation stage of rice wine. The composition of microbial community showed a dynamic change, but 13 dominant bacterial genera and 4 dominant fungal genera were detected throughout the fermentation stages. Saccharomyces presented a strong negative correlation with fungi genera but had positive associations with bacteria genera. Similarly, flavor compounds in rice wine were also showed the dynamic change, and 112 volatile compounds and 17 free amino acids were identified in the whole stages. The alcohol-ester ratio was decreased in the LTF stage, indicating that low temperature boosts ester formation. The potential correlation between flavor compounds and microbial community indicated that Delftia, Chryseobacterium, Rhizopus and Wickerhamomyces were the core functional microorganisms in rice wine. These findings clarified the correlation between changes in flavor compounds and in microbial community in the liquid fermentation of rice wine, and these results have some reference value for the quality improvement and technological optimization in liquid fermentation of rice wine.
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Affiliation(s)
- Jian-Zhong Xu
- The Key Laboratory of Industrial Biotechnology, School of Biotechnology, Ministry of Education, Jiangnan University, 1800 # Lihu Road, WuXi, 214122, People's Republic of China.
| | - Yang-Yang Zhang
- The Key Laboratory of Industrial Biotechnology, School of Biotechnology, Ministry of Education, Jiangnan University, 1800 # Lihu Road, WuXi, 214122, People's Republic of China
| | - Wei-Guo Zhang
- The Key Laboratory of Industrial Biotechnology, School of Biotechnology, Ministry of Education, Jiangnan University, 1800 # Lihu Road, WuXi, 214122, People's Republic of China
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12
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Zhu C, Cheng Y, Shi Q, Ge X, Yang Y, Huang Y. Metagenomic analyses reveal microbial communities and functional differences between Daqu from seven provinces. Food Res Int 2023; 172:113076. [PMID: 37689857 DOI: 10.1016/j.foodres.2023.113076] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 04/28/2023] [Accepted: 05/29/2023] [Indexed: 09/11/2023]
Abstract
Microbial communities perform the brewing function in Daqu. Macrogenomics and PICRUST II analyses revealed the differences in microbes and metabolic functions among Daqu from the seven Baijiu-producing provinces. Jiang-flavored Daqu (Guizhou, Shandong, and Hubei provinces) generally forms an aroma-producing functional microbiota with Kroppenstedtia, Bacillus, Thermoascus, Virgibacillus, and Thermomyces as the core, which promotes the metabolism of various amino acids and aroma compounds. Light-flavored Daqu (Shanxi Province) enriched the Saccharomycopsis, Saccharomyces, and lactic acid bacteria (LAB) microbiota through low-temperature fermentation. These microbes can synthesize alcohol and lactic acid but inhibit amino acid metabolism within the Light-flavored Daqu. Bifidobacterium and Saccharomycopsis were dominant in the Tao-flavored Daqu (Henan province). This unique microbial structure is beneficial for pyruvate fermentation to lactate. Research also found that Strong-flavored Daqu from Jiangsu and Sichuan provinces differed significantly. The microbial communities and metabolic pathways within Jiangsu Daqu were similar to those within Jiang-flavored Daqu, but Sichuan Daqu was dominated by Thermoascus, LAB, and Thermoactinomyces. In addition, Spearman correlation analysis indicated that Kroppenstedtia, Bacillus, and Thermomyces were not only positively related to flavor metabolism but also negatively correlated with Saccharomycopsis. This research will help establish a systematic understanding of the microbial community and functional characteristics in Daqu.
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Affiliation(s)
- Chutian Zhu
- 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
| | - 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
| | - Qili Shi
- College of Liquor and Food Engineering, Key Laboratory of Fermentation Engineering and Biological Pharmacy of Guizhou Province, Guizhou University, Guiyang, Guizhou 550025, China
| | - Xiangyang Ge
- Yanghe Distillery Co., Ltd., Suqian, Jiangsu 223800, China
| | - Yong Yang
- Yanghe Distillery Co., Ltd., Suqian, Jiangsu 223800, 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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13
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Quan S, Wang Y, Ran M, Zhang R, Luo X, Wang W, Wu Z, Gomi K, Zhang W. Contrasting the microbial community and non-volatile metabolites involved in ester synthesis between Qing-flavor Daqu and Nong-flavor Daqu. J Biosci Bioeng 2023; 136:213-222. [PMID: 37429763 DOI: 10.1016/j.jbiosc.2023.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/08/2023] [Accepted: 06/12/2023] [Indexed: 07/12/2023]
Abstract
Daqu, a fermentation starter, was important source of key flavors of Chinese Baijiu. The quality of Chinese Baijiu could be significantly affected by the ester-synthesis microorganisms. In order to clarify the microbial community that promoted the ester formation in Daqu, the dynamic changes of microbial community and non-volatile profiles of Qing-flavor Daqu and Nong-flavor Daqu samples through the whole making process were investigated by Illumina MiSeq platform and liquid chromatograph-mass spectrometry (LC-MS). The non-volatile compounds related to ester synthesis were identified by comparing with ester synthesis pathway and partial least squares discriminant analysis (PLS-DA). Correlations between microbial community and non-volatile metabolites involved in ester synthesis of two types of Daqu were disclosed by Pearson correlation analysis. Results showed that a total of 50 key compounds involved in ester synthesis were identified and 25 primary functional microorganisms were screened in 39 samples. Among them, in Qing-flavor Daqu, the top three primary functional microorganisms that had strong correlations with ester-formation precursors were Lactobacillus, Pantoea, and Sphingomonas; Lactobacillus and Pantoea had significantly positive interactions with various microorganisms, but Sphingomonas did not interact with others. In Nong-flavor Daqu, the top three primary functional microorganisms that had strong correlations with ester-formation precursors were Candida, Apiotrichum, and Cutaneotrichosporon. Candida showed strong positive correlation with other microorganisms, whereas Apiotrichum and Cutaneotrichosporon had no interaction with other microorganisms. The study could help our understanding of the microbial metabolism process in Daqu and provided a scientific basis for a controllable and feasible fermentation system.
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Affiliation(s)
- Shikai Quan
- College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, PR China
| | - Yan Wang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, PR China
| | | | - Rui Zhang
- Luzhou Laojiao Co., Ltd., Luzhou, PR China
| | - Xue Luo
- Luzhou Laojiao Co., Ltd., Luzhou, PR China
| | - Weihao Wang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, PR China
| | - Zhengyun Wu
- College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, PR China
| | - Katsuya Gomi
- Laboratory of Fermentation Microbiology, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Wenxue Zhang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, Sichuan, PR China; School of Liquor-Making Engineering, Sichuan University Jinjing College, Meishan, PR China.
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14
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Wu Y, Chen H, Sun Y, Huang H, Chen Y, Hong J, Liu X, Wei H, Tian W, Zhao D, Sun J, Huang M, Sun B. Integration of Chemometrics and Sensory Metabolomics to Validate Quality Factors of Aged Baijiu (Nianfen Baijiu) with Emphasis on Long-Chain Fatty Acid Ethyl Esters. Foods 2023; 12:3087. [PMID: 37628086 PMCID: PMC10453570 DOI: 10.3390/foods12163087] [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: 07/19/2023] [Revised: 08/14/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023] Open
Abstract
The storage process of Baijiu is an integral part of its production (the quality undergoes substantial changes during the aging process of Baijiu). As the storage time extends, the flavor compounds in Baijiu tend to undergo coordinated transformation, thereby enhancing the quality of Baijiu. Among them, long-chain fatty acid ethyl esters (LCFAEEs) were widely distributed in Baijiu and have been shown to have potential contributions to the quality of Baijiu. However, the current research on LCFAEEs in Baijiu predominantly focuses on the olfactory sensation aspect, while there is a lack of systematic investigation into their influence on taste and evaluation after drinking Baijiu during the aging process. In light of this, the present study investigates the distribution of LCFAEEs in Baijiu over different years. We have combined modern flavor sensory analysis with multivariate chemometrics to comprehensively and objectively explore the influence of LCFAEEs on Baijiu quality. The results demonstrate a significant positive correlation between the concentration of LCFAEEs and the fruity aroma (p < 0.05, r = 0.755) as well as the aged aroma (p < 0.05, r = 0.833) of Baijiu within a specific range; they can effectively reduce the off-flavors and spicy sensation of Baijiu. Furthermore, additional experiments utilizing a single variable suggest that LCFAEEs were crucial factors influencing the flavor of Baijiu, with Ethyl Palmitate (EP) being the most notable LCFAEE that merits further systematic investigation.
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Affiliation(s)
- Yashuai Wu
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Hao Chen
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Yue Sun
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - He Huang
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Yiyuan Chen
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Jiaxin Hong
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
- Department of Nutrition and Health, China Agriculture University, Beijing 100193, China
| | - Xinxin Liu
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Huayang Wei
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Wenjing Tian
- Department of Food and Bioengineering, Beijing Vocational College of Agriculture, Beijing 102442, China;
| | - Dongrui Zhao
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Jinyuan Sun
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Mingquan Huang
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
| | - Baoguo Sun
- China Food Flavor and Nutrition Health Innovation Center, Beijing Technology and Business University, Beijing 100048, China; (Y.W.); (H.C.); (Y.S.); (H.H.); (Y.C.); (J.H.); (X.L.); (H.W.); (J.S.); (M.H.); (B.S.)
- Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China
- Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China
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15
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Xia Y, Luo H, Wu Z, Zhang W. Microbial diversity in jiuqu and its fermentation features: saccharification, alcohol fermentation and flavors generation. Appl Microbiol Biotechnol 2022; 107:25-41. [DOI: 10.1007/s00253-022-12291-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 12/12/2022]
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16
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Linking Microbial Functional Gene Abundance and Daqu Extracellular Enzyme Activity: Implications for Carbon Metabolism during Fermentation. Foods 2022; 11:foods11223623. [PMID: 36429214 PMCID: PMC9689858 DOI: 10.3390/foods11223623] [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: 08/25/2022] [Revised: 10/25/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Daqu is the starter of Baijiu, it provides the microbes and enzymes necessary for fermentation. Studies have already established carbohydrate metabolism as the primary functional module in Daqu fermentation. The present study investigated the changes in microbial functions and the relationship between carbohydrate metabolism-related functional genes and extracellular enzyme activity during the Daqu fermentation. Amplicon sequencing identified 38 bacterial and 10 fungal phyla in Daqu samples, while shotgun metagenomic sequencing classified and annotated 40.66% of the individual features, of which 40.48% were prokaryotes. KEGG annotation showed that the pathways related to metabolites were less in the early fermentation stage, but higher in the middle and late stages. The functional genes related to pyruvate metabolism, glyoxylate and dicarboxylate metabolism, and propanoate metabolism were relatively high in the early and late stages of fermentation, while that for start and cross metabolism was relatively low. The study also found that amino sugar and nucleoside sugar metabolism were dominant in the middle stage of fermentation. Finally, the correlation network analysis showed that amylase activity positively correlated with many carbon metabolism-related pathways, while liquefaction activity negatively correlated with these pathways. In conclusion, the present study provides a theoretical basis for improving and stabilizing the quality of Daqu.
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