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Zhang Z, Zhao H, Zhu R, Cheng S, Yu Y, Xiang L, Xiang Z, Guo Z, Wang Y. Characterization and correlation analysis of microbial flora and flavor profile of stinky acid, a Chinese traditional fermented condiment. Food Chem X 2024; 22:101311. [PMID: 38559445 PMCID: PMC10978482 DOI: 10.1016/j.fochx.2024.101311] [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: 11/22/2023] [Revised: 03/12/2024] [Accepted: 03/17/2024] [Indexed: 04/04/2024] Open
Abstract
To explore the microbial diversity and flavor profiles of stinky acid, we utilized high-throughput sequencing, culture-based techniques, and bionic E-sensory technologies. The results revealed a significant correlation between the acidity levels of stinky acid and the richness of its microbial community. Ten core bacterial genera and three core fungal genera exhibited ubiquity across all stinky acid samples. Through E-nose analysis, it was found that sulfides constituted the principal odor compounds responsible for stinky acid's distinct aroma. Further insights arose from the correlation analysis, indicating the potential contribution of Debaryomyces yeast to the sour taste profile. Meanwhile, three genera-Rhizopus and Thermoascus and Companilactobacillus-were identified as contributors to aromatic constituents. Interestingly, the findings indicated that Rhizopus and Thermoascus could reduce the intensity of the pungent odor of stinky acid. In summary, this investigation's outcomes offer new insights into the complex bacterial diversity of stinky acid.
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Affiliation(s)
- Zhendong Zhang
- School of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyu, Guizhou Province, China
| | - Huijun Zhao
- Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei Province, China
- Xiangyang Lactic Acid Bacteria Biotechnology and Engineering Key Laboratory, Hubei University of Arts and Science, Xiangyang, Hubei Province, China
| | - Renzhi Zhu
- School of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyu, Guizhou Province, China
| | - Shaojing Cheng
- School of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyu, Guizhou Province, China
| | - Yuanqi Yu
- School of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyu, Guizhou Province, China
| | - Lan Xiang
- School of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyu, Guizhou Province, China
| | - Zhipan Xiang
- School of Biological Science and Agriculture, Qiannan Normal University for Nationalities, Duyu, Guizhou Province, China
| | - Zhuang Guo
- Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei Province, China
- Xiangyang Lactic Acid Bacteria Biotechnology and Engineering Key Laboratory, Hubei University of Arts and Science, Xiangyang, Hubei Province, China
| | - Yurong Wang
- Hubei Provincial Engineering and Technology Research Center for Food Ingredients, Hubei University of Arts and Science, Xiangyang, Hubei Province, China
- Xiangyang Lactic Acid Bacteria Biotechnology and Engineering Key Laboratory, Hubei University of Arts and Science, Xiangyang, Hubei Province, China
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Chen J, Li X, Wang Y, Zhang C, Yang L, Zhao L, Zhu Q, Wang L, Zhou Y. Cognition of diet quality and dietary management in elderly patients with coronary and other atherosclerotic vascular disease in western China, a qualitative research study. BMC Geriatr 2024; 24:525. [PMID: 38886659 PMCID: PMC11184894 DOI: 10.1186/s12877-024-05058-2] [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: 09/27/2023] [Accepted: 05/08/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND Healthy eating is one of the most important nonpharmacologic treatments for patients with atherosclerosis(AS). However, it is unclear how elderly AS patients in western China perceive their dietary status and which type of nutritional assistance they would be willing to receive. Therefore, the primary purpose of this study was to understand the level of knowledge about current dietary habits and healthy eating habits among elderly AS patients in western China, and the secondary purpose was to identify acceptable nutritional assistance measures or pathways for those patients to help them manage disease progression. METHODS An implementation study approach was used to recruit elderly patients with AS-related diseases in western China for semistructured interviews. RESULTS 14 participants were included in the study, and the following three themes were identified from the interviews:(1) the diet with regional characteristics; (2) low nutrition-related health literacy; (3) complex attitudes towards nutritional assistance. Most participants had misconceptions about healthy eating, and the sources of their knowledge might not be trustworthy. Participants expressed a preference for personalized nutritional assistance, especially that provided by medical-nursing combined institutions. CONCLUSION Patients in western China need nutritional assistance for their regional dietary habits; therefore, healthy dietary patterns consistent with the regional culture are proposed to improve the prevailing lack of knowledge about healthy diets, improve the dietary structure of patients, and control the development of the disease.
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Affiliation(s)
- Jiamengying Chen
- Nursing School, Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Xiaojie Li
- Nursing School, Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Yun Wang
- Nursing School, Guizhou Medical University, Guiyang City, Guizhou Province, China
| | - Chunling Zhang
- The Second Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Li Yang
- The Second Affiliated Hospital, Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Lvheng Zhao
- Nursing School, Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Qingqing Zhu
- Nursing School, Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China
| | - Li Wang
- School of Nursing, Suzhou Medical College of Soochow University, Suzhou City, Jiangsu Province, China.
| | - Yixia Zhou
- Nursing School, Guizhou University of Traditional Chinese Medicine, Guiyang City, Guizhou Province, China.
- Nursing School, Guizhou Medical University, Guiyang City, Guizhou Province, China.
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Zheng H, Jiang J, Huang C, Wang X, Hu P. Effect of sugar content on characteristic flavour formation of tomato sour soup fermented by Lacticaseibacillus casei H1 based on non-targeted metabolomics analysis. Food Chem X 2024; 21:101116. [PMID: 38282824 PMCID: PMC10818199 DOI: 10.1016/j.fochx.2024.101116] [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: 10/26/2023] [Revised: 12/24/2023] [Accepted: 01/01/2024] [Indexed: 01/30/2024] Open
Abstract
To reveal the formation mechanism of the characteristic flavour of tomato sour soup (TSS), metabolomics based on UHPLC-Q-TOF/MS was used to investigate the effect of sugar addition on TSS metabolomics during fermentation with Lacticaseibacillus casei H1. A total of 254 differentially abundant metabolites were identified in the 10% added-sugar group, which mainly belonged to organic acids and derivatives, fatty acyls, and organic oxygen compounds. Metabolic pathway analysis revealed that alanine aspartate and glutamate metabolism, valine leucine and isoleucine metabolism and butanoate metabolism were the potential pathways for the flavour of TSS formation. Lactic acid, acetic acid, Ala, Glu and Asp significantly contributed to the acidity and umami formation of TSS. This study showed that sugar regulation played an important role in the formation of the characteristic TSS flavour during fermentation, providing important support for understanding the formation mechanism of organic acids as the main characteristic flavour of TSS.
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Affiliation(s)
- Huaisheng Zheng
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Jingzhu Jiang
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Chaobing Huang
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
| | - Xiaoyu Wang
- College of Life Science, Guizhou University, Guiyang 550025, China
| | - Ping Hu
- School of Liquor and Food Engineering, Guizhou University, Guiyang 550025, China
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Feixia D, Ya L, Dafei L, Dingjiang Z, Guiping H, Zeliang W, Lirong J. Kaili Red sour soup: Correlations in composition/microbial metabolism and flavor profile during post-fermentation. Food Chem 2024; 435:137602. [PMID: 37813025 DOI: 10.1016/j.foodchem.2023.137602] [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: 05/07/2023] [Revised: 08/31/2023] [Accepted: 09/24/2023] [Indexed: 10/11/2023]
Abstract
Flavor and chemical changes with microbial succession during Red-Sour-Soup (RSS) post-fermentation were urgent to be revealed for quality control. RSS post-fermentation could be divided into three stages according to acidity, nutrients exhausting and total colony counts, without coliform bacteria growth nor nitrite peak was observed. Lactobacillus acetotolerans induced over 50 % increase of lactic acid, finally conducing to the lactic acid-dominated sour taste of RSS. The volatile compounds totally increased by 25.70 % in chili sauce and 32.58 % in tomato sauce (p < 0.05). In early-/middle-stage (pH > 3.5), alcohols and short-chain fatty acids increased, and butyric acid with unpleasant odor became the maximum flavor contributor. Nevertheless, in late-stage (pH < 3.5), with the reduction of alcohols and fatty acids, esters, 2-nonanone and terpenoids with pleasant flavors increased by Clavispora lusitaniae, Pichia, Cladosporium delicatulum and Rozellomycota sp.. In conclusion, the post-fermentation, especially L. acetotolerans metabolism and aciduric fungal esterification were essential for RSS characteristic flavor formation.
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Affiliation(s)
- Duan Feixia
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Luo Ya
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Li Dafei
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Zhong Dingjiang
- Majing Mingyang Food Co., Ltd., Qiandongnan 556000, PR China
| | - He Guiping
- Majing Mingyang Food Co., Ltd., Qiandongnan 556000, PR China
| | - Wei Zeliang
- Core Facilities of West China Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China
| | - Jia Lirong
- College of Biomass Science and Engineering, Sichuan University, Chengdu 610065, PR China.
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Identification and validation of core microbes associated with key aroma formation in fermented pepper paste (Capsicum annuumL.). Food Res Int 2023; 163:112194. [PMID: 36596132 DOI: 10.1016/j.foodres.2022.112194] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 11/21/2022]
Abstract
Fermented peppers are usually obtained by the spontaneous fermentation of microorganisms attached to fresh peppers, and the variable microbial composition would lead to inconsistencies in flavor between batches. To demonstrate the roles of microorganisms in flavor formation, the core microbes closely associated with the key aroma compounds of fermented pepper paste were screened and validated in this study. Lactobacillus was the dominant bacterial genus in fermented pepper paste, whereas the main fungal genera were Alternaria and Kazachstania. Nine strains of the genera Lactobacillus, Weissella, Bacillus, Zygosaccharomyces, Kazachstania, Debaryomyces, and Pichia were isolated from fermented pepper paste. Eleven key aroma compounds were identified using gas chromatography combined with olfactometry and relative odor activity values. Correlation analysis showed that Zygosaccharomyces and Kazachstania were positively correlated with the majority of the key aroma compounds, whereas Lactobacillus was negatively correlated with them. Thus, Zygosaccharomyces and Kazachstania were identified as core genera associated with the key odorants. Finally, Zygosaccharomyces bisporus, Kazachstania humilis, and Lactiplantibacillus plantarum were used as starter cultures for fermented peppers, confirming that Z. bisporus and K. humilis were more beneficial for the key aroma compounds (e.g., acetate, linalool, and phenyl ethanol) rather than L. plantarum. This study contributed to understanding the flavor formation mechanism and provided references for the quality control of food fermentation.
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Liu Z, Zhou X, Wen M, Gong Z, Lin B, Zhao L, Wang J. Analysis of factors related to browning of red sour soup during fermentation. Front Nutr 2023; 10:1092745. [PMID: 36925952 PMCID: PMC10012660 DOI: 10.3389/fnut.2023.1092745] [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: 11/08/2022] [Accepted: 02/03/2023] [Indexed: 03/04/2023] Open
Abstract
As a traditional fermentation food, red sour soup (RSS) is very popular in China. However, browning is always occurred during the process of fermentation, which influences the sensory quality of RSS and limits its further application. Thus, it is meaningful to elucidate the main factors related to browning during the process of fermentation. Herein, the changes in various factors related to browning from group spontaneous (RSS-SF) and inoculant fermentation (RSS-IF) were determined and analyzed. Firstly, the activity changes of enzymes related to browning indicated that browning of group RSS-SF and RSS-IF during fermentation was not related to enzymatic browning. Secondly, path analysis revealed that the main factors related to non-enzymatic browning of group RSS-SF and RSS-IF were oxidation of polyphenol and degradation of ascorbic acid (Vc). The results of this study not only identifies the main factors associate with browning of RSS, but also provides foundation on how to control the browning of RSS in further study.
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Affiliation(s)
- Zhiqi Liu
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China.,Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang University, Shaoyang, China
| | - Xiaojie Zhou
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China.,Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang University, Shaoyang, China
| | - Ming Wen
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China.,Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang University, Shaoyang, China
| | - Zhouliang Gong
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China.,Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang University, Shaoyang, China
| | - Bilian Lin
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China.,Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang University, Shaoyang, China
| | - Liangzhong Zhao
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China.,Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang University, Shaoyang, China
| | - Jianrong Wang
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China.,Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang University, Shaoyang, China.,Shenzhen Raink Ecology & Environment Co., Ltd., Shenzhen, China
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Effect of Starters on Quality Characteristics of Hongsuantang, a Chinese Traditional Sour Soup. FERMENTATION 2022. [DOI: 10.3390/fermentation8110589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Hongsuantang (HST) is a traditional Chinese and famous sour soup. However, the quality of naturally fermented HST is not controllable. We investigated the effects of different lactic acid bacteria starters on HST acid production, color, antioxidant capacity, total phenols, total carotenoids, organic acids, volatile substances, and sensory properties to determine the most suitable strain for HST production. The results showed that among the seven lactic acid bacteria strains used to inoculate fermented HST, Lactiplantibacillus plantarum SQ-4 exhibited the most excellent fermentation characteristics. SQ-4 rapidly reduced the HST’s pH by 0.77. It significantly increased the HST’s color, organic acids, total phenols, carotenoids, lycopene, and free radical scavenging ability. Lactiplantibacillus plantarum SQ-4 was an excellent starter for preparing HST with good acid production capacity, moderate sourness and spiciness, and good sensory and other characteristics. Each starter produces its distinct flavor components. α-Pinene, myrcene, α-copaene, and guaiol were vital aroma compounds in HST fermentation by the starter. This study laid a foundation for selecting HST starters and potential industrial production.
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Zhou X, Zhou W, He X, Deng Y, Li L, Li M, Feng X, Zhang L, Zhao L. Effects of post-fermentation on the flavor compounds formation in red sour soup. Front Nutr 2022; 9:1007164. [PMID: 36386903 PMCID: PMC9651139 DOI: 10.3389/fnut.2022.1007164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 09/20/2022] [Indexed: 12/05/2022] Open
Abstract
Red Sour Soup (RSS) is a traditional fermented food in China. After two rounds of fermentation, sour soup has a mellow flavor. However, the microbial composition and flavor formation processes in post-fermentation in RSS are unclear. This study investigates the bacteria composition of RSS during the post-fermentation stage (0–180 days) using high-throughput sequencing. The results show that lactic acid bacteria (LAB) are dominant during the post-fermentation process, and their abundance gradually increases with fermentation time. Additionally, gas chromatography-mass spectrometry was used to detect volatile flavor compounds in the post-fermentation process. Seventy-seven volatile flavor compounds were identified, including 24 esters, 14 terpenes, 9 aromatic hydrocarbons, 9 alkanes, 6 heterocyclic compounds, 3 alcohols, 3 acids, 3 ketones, 2 phenols, 2 aldehydes, 1 amine, and 1 other. Esters and aromatic hydrocarbons are the main volatile compounds in RSS during the post-fermentation process. Orthogonal partial least squares screening and correlation analysis derived several significant correlations, including 48 pairs of positive correlations and 19 pairs of negative correlations. Among them, Acetobacter spp., Clostridium spp. and Sporolactobacillus spp. have 15, 14, 20 significant correlation pairs, respectively, and are considered the most important bacterial genera post-fermentation. Volatile substances become abundant with increasing fermentation time. LAB are excessive after more than 120 days but cause a drastic reduction in volatile ester levels. Thus, the post-fermentation time should be restricted to 120 days, which retains the highest concentrations of volatile esters in RSS. Overall, these findings provide a theoretical basis to determine an optimal post-fermentation time duration, and identify essential bacteria for manufacturing high-quality starter material to shorten the RSS post-fermentation processing time.
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Affiliation(s)
- Xiaojie Zhou
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, China
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China
- Hunan Key Laboratory of Processed Food for Special Medical Purpose, Changsha, China
- Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang, China
| | - Wenhua Zhou
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, China
- Hunan Key Laboratory of Processed Food for Special Medical Purpose, Changsha, China
| | - Xiaojie He
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China
- Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang, China
| | - Yaxin Deng
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China
- Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang, China
| | - Liangyi Li
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, China
- Hunan Key Laboratory of Processed Food for Special Medical Purpose, Changsha, China
| | - Ming Li
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China
- Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang, China
| | - Xuzhong Feng
- Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang, China
- Shenzhen Shanggutang Food Development Co., Ltd., Shenzhen, China
| | - Lin Zhang
- College of Food Science and Engineering, Central South University of Forestry and Technology, Changsha, China
- Hunan Key Laboratory of Processed Food for Special Medical Purpose, Changsha, China
- *Correspondence: Lin Zhang,
| | - Liangzhong Zhao
- College of Food and Chemical Engineering, Shaoyang University, Shaoyang, China
- Hunan Provincial Key Laboratory of Soybean Products Processing and Safety Control, Shaoyang, China
- Liangzhong Zhao,
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Exploring Core Microbiota Based on Characteristic Flavor Compounds in Different Fermentation Phases of Sufu. Molecules 2022; 27:molecules27154933. [PMID: 35956884 PMCID: PMC9370341 DOI: 10.3390/molecules27154933] [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: 07/11/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 11/16/2022] Open
Abstract
Sufu, a Chinese traditional fermented soybean product, has a characteristic foul smell but a pleasant taste. We determined the core functional microbiota and their metabolic mechanisms during sufu fermentation by examining relationships among bacteria, characteristic flavor compounds, and physicochemical factors. Flavor compounds in sufu were detected through headspace solid-phase microextraction coupled with gas chromatography–mass spectrometry, and the microbial community structure was determined through high-throughput 16S rRNA sequencing. The results showed that the fermentation process of sufu could be divided into early and late stages. The early stage was critical for flavor development. Seven microbiota were screened based on their abundance, microbial relevance, and flavor production capacity. Five microbes were screened in the early stage: Pseudomonas, Tetragenococcus, Lysinibacillus, Pantoea, and Burkholderia–Caballeronia–Paraburkholderia. Three microbes were screened in the late stage: Exiguobacterium, Bacillus, and Pseudomonas. Their metabolic profiles were predicted. The results provided a reference for the selection of enriched bacterial genera in the fermentation process and controlling applicable process conditions to improve the flavor of sufu.
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