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Li A, Liu Y, Yang G, Du M, Song J, Kan J. Impact of salt content on Douchi metabolites: biogenic amines, non-volatile compounds and volatile compounds. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:7524-7535. [PMID: 38738583 DOI: 10.1002/jsfa.13574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 02/27/2024] [Accepted: 05/02/2024] [Indexed: 05/14/2024]
Abstract
BACKGROUND The excessive salt intake associated with Douchi has become a topic of controversy. Addressing this concern and enhancing its market competitiveness necessitates the application of salt reduction fermentation in Douchi. Therefore, to promote the application of salt reduction fermentation in Douchi, a comprehensive study was undertaken aiming to investigate the differences in biogenic amines, volatile compounds and non-volatile compounds in Douchi with varying salt content. RESULTS The findings unequivocally demonstrate that salt hampers the formation of metabolites in Douchi. As the salt content increased, there was a significant decrease (P < 0.05) in the levels of total acid, amino-type nitrogen and free amino acids in Douchi. Notably, when the salt content exceeded 80 g kg-1, there was a substantial reduction (P < 0.05) in putrescine, lactic acid and malic acid levels. Similarly, when the salt content surpassed 40 g kg-1, β-phenethylamine and oxalic acid levels exhibited a significant decline (P < 0.05). Furthermore, the results of E-nose and principal component analysis based on headspace solid phase microextraction gas chromatography-mass spectrometry revealed notable discrepancies in the volatile compound content between Douchi samples with relatively low salt content (40 and 80 g kg-1) and those with relatively high salt content (120, 160 and 200 g kg-1) (P < 0.05). By employing partial least squares discriminant analysis, eight distinct volatile compounds, including o-xylene, benzaldehyde and 1-octen-one, were identified. These compounds exhibited higher concentrations in Douchi samples with relatively low salt content (40 and 80 g kg-1). The sensory results showed that Douchi samples with lower salt content exhibited higher scores in the soy sauce-like and Douchi aroma attributes. CONCLUSION In conclusion, this study significantly enhances our understanding of the impact of salt on metabolites in Douchi and provides invaluable insights for the development of salt reduction fermentation in this context. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Aijun Li
- College of Food Science, Southwest University, Chongqing, China
| | - Yuchen Liu
- College of Food Science, Southwest University, Chongqing, China
| | - Gang Yang
- College of Food Science, Southwest University, Chongqing, China
| | - Muying Du
- College of Food Science, Southwest University, Chongqing, China
- Chinese-Hungarian Cooperative Research Centre for Food Science, Chongqing, China
- Laboratory of Quality & Safety Risk Assessment for Agri-products on Storage and Preservation (Chongqing), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Chongqing, China
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing, China
| | - Jun Song
- Shu Xiang Douchi Food Research Institute limited company, Chongqing, China
| | - Jianquan Kan
- College of Food Science, Southwest University, Chongqing, China
- Chinese-Hungarian Cooperative Research Centre for Food Science, Chongqing, China
- Laboratory of Quality & Safety Risk Assessment for Agri-products on Storage and Preservation (Chongqing), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Chongqing, China
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing, China
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Uddin J, Yasmin S, Kamal GM, Asmari M, Saqib M, Chen H. Changes in Metabolite Profiles of Chinese Soy Sauce at Different Time Durations of Fermentation Studied by 1H-NMR-Based Metabolomics. Metabolites 2024; 14:285. [PMID: 38786762 PMCID: PMC11123076 DOI: 10.3390/metabo14050285] [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: 02/28/2024] [Revised: 05/03/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024] Open
Abstract
Fermentation parameters, especially the duration, are important in imparting a peculiar taste and flavor to soy sauce. The main purpose of this research was to monitor metabolic changes occurring during the various time intervals of the fermentation process. NMR-based metabolomics was used to monitor the compositional changes in soy sauce during fermentation. The 1H-NMR spectra of the soy sauce samples taken from the fermentation tanks at 0 to 8 months were analyzed using 1H-NMR spectroscopy, and the obtained spectra were analyzed by multivariate statistical analysis. The Principal Component Analysis (PCA) and Partial Least Square Discriminate analysis (PLSDA) revealed the separation of samples fermented for various time durations under identical conditions. Key metabolites shown by corresponding loading plots exhibited variations in amino acids (lysine, threonine, isoleucine, etc.), acetate, glucose, fructose, sucrose, ethanol, glycerol, and others. The levels of ethanol in soy sauce increased with longer fermentation durations, which can be influenced by both natural fermentation and the intentional addition of ethanol as a preservative. The study shows that the variation in metabolite can be very efficiently monitored using 1H-NMR-based metabolomics, thus suggestion to optimize the time duration to get the soy sauce product with the desired taste and flavor.
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Affiliation(s)
- Jalal Uddin
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha 61441, Saudi Arabia
| | - Samra Yasmin
- Institute of Chemistry, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan 64200, Pakistan
| | - Ghulam Mustafa Kamal
- Institute of Chemistry, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan 64200, Pakistan
- Innovation Academy of Precision Measurement Science & Technology, University of Chinese Academy of Sciences Beijing, Wuhan 430071, China
| | - Mufarreh Asmari
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha 61441, Saudi Arabia
| | - Muhammad Saqib
- Institute of Chemistry, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan 64200, Pakistan
| | - Heyu Chen
- College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang 712100, China
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Wang LH, Qu WH, Xu YN, Xia SG, Xue QQ, Jiang XM, Liu HY, Xue CH, Wen YQ. Developing a High-Umami, Low-Salt Soy Sauce through Accelerated Moromi Fermentation with Corynebacterium and Lactiplantibacillus Strains. Foods 2024; 13:1386. [PMID: 38731757 PMCID: PMC11083161 DOI: 10.3390/foods13091386] [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: 03/20/2024] [Revised: 04/09/2024] [Accepted: 04/14/2024] [Indexed: 05/13/2024] Open
Abstract
The traditional fermentation process of soy sauce employs a hyperhaline model and has a long fermentation period. A hyperhaline model can improve fermentation speed, but easily leads to the contamination of miscellaneous bacteria and fermentation failure. In this study, after the conventional koji and moromi fermentation, the fermentation broth was pasteurized and diluted, and then inoculated with three selected microorganisms including Corynebacterium glutamicum, Corynebacterium ammoniagenes, and Lactiplantibacillus plantarum for secondary fermentation. During this ten-day fermentation, the pH, free amino acids, organic acids, nucleotide acids, fatty acids, and volatile compounds were analyzed. The fermentation group inoculated with C. glutamicum accumulated the high content of amino acid nitrogen of 0.92 g/100 mL and glutamic acid of 509.4 mg/100 mL. The C. ammoniagenes group and L. plantarum group were rich in nucleotide and organic acid, respectively. The fermentation group inoculated with three microorganisms exhibited the best sensory attributes, showing the potential to develop a suitable fermentation method. The brewing speed of the proposed process in this study was faster than that of the traditional method, and the umami substances could be significantly accumulated in this low-salt fermented model (7% w/v NaCl). This study provides a reference for the low-salt and rapid fermentation of seasoning.
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Affiliation(s)
- Li-Hao Wang
- College of Food Science and Engineering, Ocean University of China, 1299 Sansha Road, Qingdao 266400, China; (L.-H.W.); (W.-H.Q.); (Y.-N.X.); (S.-G.X.); (Q.-Q.X.); (X.-M.J.); (C.-H.X.)
| | - Wen-Hui Qu
- College of Food Science and Engineering, Ocean University of China, 1299 Sansha Road, Qingdao 266400, China; (L.-H.W.); (W.-H.Q.); (Y.-N.X.); (S.-G.X.); (Q.-Q.X.); (X.-M.J.); (C.-H.X.)
| | - Ya-Nan Xu
- College of Food Science and Engineering, Ocean University of China, 1299 Sansha Road, Qingdao 266400, China; (L.-H.W.); (W.-H.Q.); (Y.-N.X.); (S.-G.X.); (Q.-Q.X.); (X.-M.J.); (C.-H.X.)
| | - Song-Gang Xia
- College of Food Science and Engineering, Ocean University of China, 1299 Sansha Road, Qingdao 266400, China; (L.-H.W.); (W.-H.Q.); (Y.-N.X.); (S.-G.X.); (Q.-Q.X.); (X.-M.J.); (C.-H.X.)
| | - Qian-Qian Xue
- College of Food Science and Engineering, Ocean University of China, 1299 Sansha Road, Qingdao 266400, China; (L.-H.W.); (W.-H.Q.); (Y.-N.X.); (S.-G.X.); (Q.-Q.X.); (X.-M.J.); (C.-H.X.)
| | - Xiao-Ming Jiang
- College of Food Science and Engineering, Ocean University of China, 1299 Sansha Road, Qingdao 266400, China; (L.-H.W.); (W.-H.Q.); (Y.-N.X.); (S.-G.X.); (Q.-Q.X.); (X.-M.J.); (C.-H.X.)
- Qingdao Institute of Marine Bioresources for Nutrition & Health Innovation, Qingdao 266109, China
| | - Hong-Ying Liu
- Ocean College, Hebei Agriculture University, Qinhuangdao 066000, China;
| | - Chang-Hu Xue
- College of Food Science and Engineering, Ocean University of China, 1299 Sansha Road, Qingdao 266400, China; (L.-H.W.); (W.-H.Q.); (Y.-N.X.); (S.-G.X.); (Q.-Q.X.); (X.-M.J.); (C.-H.X.)
- Qingdao Institute of Marine Bioresources for Nutrition & Health Innovation, Qingdao 266109, China
| | - Yun-Qi Wen
- College of Food Science and Engineering, Ocean University of China, 1299 Sansha Road, Qingdao 266400, China; (L.-H.W.); (W.-H.Q.); (Y.-N.X.); (S.-G.X.); (Q.-Q.X.); (X.-M.J.); (C.-H.X.)
- Qingdao Institute of Marine Bioresources for Nutrition & Health Innovation, Qingdao 266109, China
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Staninska-Pięta J, Czarny J, Wolko Ł, Cyplik P, Drożdżyńska A, Przybylak M, Ratajczak K, Piotrowska-Cyplik A. Temperature, Salinity and Garlic Additive Shape the Microbial Community during Traditional Beetroot Fermentation Process. Foods 2023; 12:3079. [PMID: 37628078 PMCID: PMC10453225 DOI: 10.3390/foods12163079] [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: 07/14/2023] [Revised: 08/03/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023] Open
Abstract
Plant-based traditional fermented products are attracting a lot of interest in global markets. An example of them is beetroot leaven, which is valued for its high bioactive compound content. The variety of production recipes and the spontaneous nature of red beet fermentation favor its high diversity. This study aimed to analyze the impact of external factors-temperature, brine salinity, and garlic dose-on the beetroot fermentation and bacterial metapopulation responsible for this process. The research results confirmed the significant influence of the selected and analyzed factors in shaping the leaven physicochemical profile including organic acid profile and betalain content. Analysis of bacterial populations proved the crucial importance of the first 48 h of the fermentation process in establishing a stable metapopulation structure and confirmed that this is a targeted process driven by the effect of the analyzed factors. Lactobacillaceae, Enterobacteriaceae, and Leuconostocaceae were observed to be the core microbiome families of the fermented red beet. Regardless of the impact of the tested factors, the leaven maintained the status of a promising source of probiotic bacteria. The results of this research may be helpful in the development of the regional food sector and in improving the quality and safety of traditionally fermented products such as beetroot leaven.
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Affiliation(s)
- Justyna Staninska-Pięta
- Department of Food Technology of Plant Origin, Poznan University of Life Sciences, Wojska Polskiego 31, 60-624 Poznan, Poland
| | - Jakub Czarny
- Institute of Forensic Genetics, Al. Mickiewicza 3/4, 85-071 Bydgoszcz, Poland
| | - Łukasz Wolko
- Department of Biochemistry and Biotechnology, Poznan University of Life Sciences, Dojazd 11, 60-632 Poznan, Poland
| | - Paweł Cyplik
- Department Biotechnology and Food Microbiology, Poznan University of Life Sciences, Wojska Polskiego 48, 60-627 Poznan, Poland
| | - Agnieszka Drożdżyńska
- Department Biotechnology and Food Microbiology, Poznan University of Life Sciences, Wojska Polskiego 48, 60-627 Poznan, Poland
| | - Martyna Przybylak
- Department Biotechnology and Food Microbiology, Poznan University of Life Sciences, Wojska Polskiego 48, 60-627 Poznan, Poland
| | - Katarzyna Ratajczak
- Department of Food Technology of Plant Origin, Poznan University of Life Sciences, Wojska Polskiego 31, 60-624 Poznan, Poland
| | - Agnieszka Piotrowska-Cyplik
- Department of Food Technology of Plant Origin, Poznan University of Life Sciences, Wojska Polskiego 31, 60-624 Poznan, Poland
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Jiang L, Lu Y, Ma Y, Liu Z, He Q. Comprehensive investigation on volatile and non-volatile metabolites in low-salt doubanjiang with different fermentation methods. Food Chem 2023; 413:135588. [PMID: 36758388 DOI: 10.1016/j.foodchem.2023.135588] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/18/2022] [Accepted: 01/25/2023] [Indexed: 01/30/2023]
Abstract
Doubanjiang is a well-known fermented condiment in China, but the high-salt concentration in its traditional manufacture process greatly lengthens the fermentation time, and leads to potential health risks. Here, the effects of salt reduction and co-inoculated starters (Tetragenococcus halophilus and Zygosaccharomyces rouxii) on the volatile metabolites (VMs) and non-volatile metabolites (NVMs) of doubanjiang were investigated using metabolomics technology and chemometrics analysis. Results showed that 75 VMs were identified, and 12 of them had significant aroma contribution (ROVAs ≥ 1). In addition, 106 NVMs were defined as significantly different metabolites (p < 0.05; VIP ≥ 1). Salt reduction could significantly increase the concentrations of VMs, but this strategy also promoted some undesirable odors like 2-phetylfuran and hexanoic acid, which could be totally suppressed by inoculation of starter. Moreover, the two starters improved amino acid, ester, and acid metabolites. This study provides a deeper insight into the development of low-salt fermented foods.
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Affiliation(s)
- Li Jiang
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China
| | - Yunhao Lu
- College of Food and Biological Engineering, Chengdu University, Chengdu 610106, China.
| | - Yi Ma
- College of Bioengineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Zishan Liu
- College of Bioengineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Qiang He
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, China.
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Comparative Metabolomic Analysis of Moromi Fermented Using Different Aspergillus oryzae Strains. Molecules 2022; 27:molecules27196182. [PMID: 36234719 PMCID: PMC9573031 DOI: 10.3390/molecules27196182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/16/2022] [Accepted: 09/19/2022] [Indexed: 11/21/2022] Open
Abstract
Aspergillus oryzae (A. oryzae) is an important starter in the fermentation of koji and moromi. However, the effect of different A. oryzae strains on the quality of moromi has rarely been studied. For this reason, this study analyzed the physicochemical properties, enzyme activity, sensory quality, and metabolite profiles of moromi samples fermented using two strains (A. oryzae KCCM12012P (moromi-1) and KCCM12804P (moromi-2)), which were newly isolated from fermented soy foods, and compared them to those of a commercialized A. oryzae strain (control). Amino-type nitrogen contents of moromi-1 and moromi-2 samples were higher than that of control moromi, and their amylase and protease activities were also higher. Moreover, metabolite profiles of moromi were significantly altered according to strains. In particular, the levels of many amino acids, peptides, nucleotides, and acidic compounds were altered, which resulted in changes in the sensory quality of moromi. Although volatile compounds were not investigated, the results suggested that the quality of moromi was significantly different for newly isolated strains, especially A. oryzae KCCM12804P, and they were superior to the commercial strain in terms of taste-related substances. Therefore, these strains could be used as good starters to produce moromi and soy sauce with good sensory quality.
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