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Li L, Wu J, Tao Y, Xu Z, Tang Q, Liu M. Seasonal dynamics of the microbial community in a strong-flavor baijiu fermentation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:6605-6614. [PMID: 38523062 DOI: 10.1002/jsfa.13485] [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: 02/01/2024] [Revised: 03/13/2024] [Accepted: 03/25/2024] [Indexed: 03/26/2024]
Abstract
BACKGROUND The microbial community plays a crucial role in Chinese strong-flavor baijiu (SFB) fermentation. However, the seasonal dynamics of the microbial community in the SFB fermentation system and its contribution to the unique flavor of SFB have not been fully elucidated. In this study, we investigated the seasonal dynamics of the microbial community through 16S rRNA and ITS gene sequencing. RESULTS The results revealed significant temporal dynamics of microbial communities and environmental variables throughout the four seasons. The influence of seasons on fungal communities was found to be more significant than on bacterial communities. The diversity of bacteria was higher during the winter and summer, whereas fungal diversity was more prominent in summer and autumn. Stochastic processes maintained their dominance in microbial assembly throughout all four seasons but the significance of heterogeneous selection increased during summer for both bacteria and fungi, whereas homogeneous selection became more pronounced during winter for fungi. The pH and environmental temperature were important drivers of microbial community assembly across different seasons, primarily impacting the core genera responsible for the production of major volatile flavor compounds (VFCs), especially ethyl caproate. CONCLUSION These findings provide new insights into the impact of seasons on microbial communities and hold promise for improving the quality-control measures for SFB brewed in different seasons. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Lingjuan Li
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, China
| | - Jing Wu
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, China
| | - Yong Tao
- CAS Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, China
- Liquor Making Biological Technology and Application of Key Laboratory of Sichuan Province, Department of Bioengineering, Sichuan University of Science & Engineering, Zigong, China
| | - Zhancheng Xu
- Sichuan Jiannanchun Group Co. Ltd., Mianzhu, China
| | - Qinglan Tang
- Sichuan Jiannanchun Group Co. Ltd., Mianzhu, China
| | - Menghua Liu
- Sichuan Jiannanchun Group Co. Ltd., Mianzhu, China
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2
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Bae S, Choi YJ, Park SE, Kim EJ, Lee MJ, Chung YB, Park SH, Min SG, Ku KM, Seo HY, Son HS. Effects of seasonal harvest of kimchi cabbage on microbial and metabolic profiles of kimchi. Food Res Int 2024; 188:114476. [PMID: 38823866 DOI: 10.1016/j.foodres.2024.114476] [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: 01/01/2024] [Revised: 03/28/2024] [Accepted: 05/07/2024] [Indexed: 06/03/2024]
Abstract
Kimchi cabbage, the key ingredient in kimchi, is cultivated year-round to meet high production demands. This study aimed to examine the effects of seasonal harvesting (spring, summer, fall, and winter) on the microbial and metabolic profiles of kimchi during 30 days of fermentation. Lactic acid bacteria distribution is notably influenced by seasonal variations, with Latilactobacillus dominant in fall-harvested kimchi group and Weissella prevailing in spring, summer, and winter. The microbial communities of spring and fall group exhibited similar profiles before fermentation, whereas the microbial communities and metabolic profiles of spring and summer group were similar after 30 days of fermentation. Seasonal disparities in metabolite concentrations, including glutamic acid, serine, and cytosine, persist throughout fermentation. This study provides a comprehensive understanding of the substantial impact of seasonal harvesting of kimchi cabbage on the microbial and metabolic characteristics of kimchi, providing valuable insights into producing kimchi with diverse qualities.
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Affiliation(s)
- Soobin Bae
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
| | - Yun-Jeong Choi
- Kimchi Industry Promotion Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
| | - Seong-Eun Park
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
| | - Eun-Ju Kim
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
| | - Min Jung Lee
- Kimchi Industry Promotion Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
| | - Young Bae Chung
- Kimchi Industry Promotion Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
| | - Sung Hee Park
- Kimchi Industry Promotion Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
| | - Sung Gi Min
- Kimchi Industry Promotion Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
| | - Kang-Mo Ku
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
| | - Hye-Young Seo
- Kimchi Industry Promotion Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
| | - Hong-Seok Son
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
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3
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Zhao Z, Sun L, Sha Z, Chu C, Wang Q, Zhou D, Wu S. Valorisation of fresh waste grape through fermentation with different exogenous probiotic inoculants. Heliyon 2023; 9:e16650. [PMID: 37274685 PMCID: PMC10238925 DOI: 10.1016/j.heliyon.2023.e16650] [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: 01/09/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 06/06/2023] Open
Abstract
The disposal of fresh waste grape berries restraining the sustainable development of vineyards. The aims of this study were to evaluate the effects of different exogenous probiotic inoculants on the fermentation of fresh waste grape berries. In the fermentation process, the variations of pH and EC value, chemical characteristics of the fermentation products, as well as the microbial communities' composition were simultaneously observed. In addition, the feasibility of using the fermentation products as chemical fertilizer substitute in agricultural production also has been verified in this study. The results indicated that the different probiotic inoculants has shown clear impacts on the variation trends of pH and EC value in the grape waste fermentation. Lactobacillus casei and Zygosaccharomyces rouxii are ideal probiotics for the fermentation of waste grape, which enhanced the contents of free Aa and other nutrients in fermentation products. Compared with Fn treatment (without exogenous inoculants), the total free Aa contents in Fs (inoculation with Z. rouxii) and Fm (inoculation with L. casei and Z. rouxii mixture) treatments have improved by 199.1% and 325.5%, respectively. The microbial communities' composition during the fermentation process also been greatly influenced by the different inoculants. At the genus level, Lactobacillus and Pseudomonas were the dominant bacteria, while Saccharomyces and Candida were the dominant fungi in the fermentation. Using the fermentation products as chemical fertilizer substitute has enhanced the quality of Kyoho grape. Compared with traditional chemical fertilization treatment (T1), application with fermented grape waste (T2) has significantly improved VC and soluble solid contents in grape berries by 16.89% and 20.12%, respectively. In conclusion, fermentation with suitable probiotics was an efficient approach for the disposal and recycling of fresh waste grape in vineyards.
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Affiliation(s)
- Zheng Zhao
- Eco-environmental Protection Institute of Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Lina Sun
- Eco-environmental Protection Institute of Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Zhimin Sha
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Changbin Chu
- Eco-environmental Protection Institute of Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Qingfeng Wang
- Eco-environmental Protection Institute of Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Deping Zhou
- Eco-environmental Protection Institute of Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Shuhang Wu
- Eco-environmental Protection Institute of Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
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4
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Zhang S, Zhang Y, Wu L, Zhang L, Wang S. Characterization of microbiota of naturally fermented sauerkraut by high-throughput sequencing. Food Sci Biotechnol 2023; 32:855-862. [PMID: 37041807 PMCID: PMC10082884 DOI: 10.1007/s10068-022-01221-w] [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: 07/22/2022] [Revised: 09/28/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022] Open
Abstract
Sauerkraut is a traditionally fermented cabbage, with a unique taste and beneficial properties, in northeast China. The taste and flavor of sauerkraut vary from region to region, owing to the differences in microorganisms. Illumina MiSeq sequencing was used to identify and quantify the microbial community composition of the broth and leaves of the naturally fermented Suan-cai collected from northeast China. The alpha and beta diversity of the samples from three areas in Heilongjiang province shown that the complexity of bacterial diversity of the three samples was C, A and B in turn. The Lactobacillus widely existed in fermented sauerkraut, of these, Latilactobacillus sakei, Loigolactobacillus coryniformis subsp. torquens, Lactiplantibacillus plantarum subsp. plantarum, and Secundilactobacillus malefermentans were more abundant in the sauerkraut leaves than in fermentation broth. Other genera of lactic acid bacteria Pediococcus and Leuconostoc, which have potential probiotic properties, were also present. However, some harmful bacteria such as Arcobacter and Acinetobacter were also detected.
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Affiliation(s)
- Shuang Zhang
- Food Science College, Northeast Agricultural University, Harbin, 150030 People’s Republic of China
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin, 150030 People’s Republic of China
| | - Yichen Zhang
- Food Science College, Northeast Agricultural University, Harbin, 150030 People’s Republic of China
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin, 150030 People’s Republic of China
| | - Lihong Wu
- Food Science College, Northeast Agricultural University, Harbin, 150030 People’s Republic of China
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin, 150030 People’s Republic of China
| | - Lili Zhang
- Food Science College, Northeast Agricultural University, Harbin, 150030 People’s Republic of China
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin, 150030 People’s Republic of China
| | - Song Wang
- Food Science College, Northeast Agricultural University, Harbin, 150030 People’s Republic of China
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin, 150030 People’s Republic of China
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5
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Dynamic changes in the bacterial communities and metabolites of Moringa oleifera leaves during fermentation with or without pyroligneous acid. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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6
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Cha J, Kim YB, Park SE, Lee SH, Roh SW, Son HS, Whon TW. Does kimchi deserve the status of a probiotic food? Crit Rev Food Sci Nutr 2023; 64:6512-6525. [PMID: 36718547 DOI: 10.1080/10408398.2023.2170319] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Kimchi is a traditional fermented vegetable side dish in Korea and has become a global health food. Kimchi undergoes spontaneous fermentation, mainly by lactic acid bacteria (LAB) originating from its raw ingredients. Numerous LAB, including the genera Leuconostoc, Weissella, and Lactobacillus, participate in kimchi fermentation, reaching approximately 9-10 log colony forming units per gram or milliliter of food. The several health benefits of LAB (e.g., antioxidant and anti-inflammatory properties) combined with their probiotic potential in complex diseases including obesity, cancer, atopic dermatitis, and immunomodulatory effect have generated an interest in the health effects of LAB present in kimchi. In order to estimate the potential of kimchi as a probiotic food, we comprehensively surveyed the health functionalities of kimchi and kimchi LAB, and their effects on human gut environment, highlighting the probiotics function.
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Affiliation(s)
- Jeongmin Cha
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Yeon Bee Kim
- Kimchi Functionality Research Group, World Institute of Kimchi, Gwangju, Republic of Korea
| | - Seong-Eun Park
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Se Hee Lee
- Kimchi Functionality Research Group, World Institute of Kimchi, Gwangju, Republic of Korea
| | - Seong Woon Roh
- Kimchi Functionality Research Group, World Institute of Kimchi, Gwangju, Republic of Korea
| | - Hong-Seok Son
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Tae Woong Whon
- Kimchi Functionality Research Group, World Institute of Kimchi, Gwangju, Republic of Korea
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7
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Effects of the addition of starches with different amylose contents on kimchi microbiota and metabolites. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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8
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Liu A, Pan W, Li S, Li J, Li Q, He L, Chen S, Hu K, Hu X, Han G, Li S, Zhou J, Chen F, Liu S. Seasonal dynamics of microbiota and physicochemical indices in the industrial-scale fermentation of Sichuan Baoning vinegar. Food Chem X 2022; 16:100452. [PMID: 36185105 PMCID: PMC9516444 DOI: 10.1016/j.fochx.2022.100452] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/08/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
Differences between the microbiomes in every-two seasons were observed. The increase in total acidity of vinegar Pei was lowest in the summer (3.40 g/100 g). Lactic acid and acetic acid contents in raw vinegar from each season were different.
We investigated the impact of seasons of the year on microbiota and physicochemical indices in industrial-scale fermentation of Sichuan Baoning vinegar. Illumina HiSeq sequencing results showed significant differences (P < 0.05) between the microbiomes of vinegar Pei in every-two seasons, except for bacterial communities between summer and autumn. Total acid, reducing sugar, starch, and alcohol contents of vinegar Pei from the same sampling day of each season were measurably different. Although total acid content in vinegar Pei was similar at the end of fermentation (P > 0.05), the increase in total acidity was highest in the autumn. Acetic acid content in raw vinegar was highest in the autumn (3472.42 mg/100 mL), and lowest in the summer (2304.01 mg/100 mL). This study provides a theoretical basis for the production of Sichuan bran vinegar with consistent quality and provides insights into the quality control of traditional fermented foods.
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9
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Laksana AJ, Choi YM, Kim JH, Kim BS, Kim JY. Real-Time Monitoring the Effects of Storage Conditions on Volatile Compounds and Quality Indexes of Halal-Certified Kimchi during Distribution Using Electronic Nose. Foods 2022; 11:foods11152323. [PMID: 35954088 PMCID: PMC9368639 DOI: 10.3390/foods11152323] [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: 06/13/2022] [Revised: 07/19/2022] [Accepted: 08/01/2022] [Indexed: 02/04/2023] Open
Abstract
The food logistics system is an essential sector for maintaining and monitoring the safety and quality of food products and becoming more crucial, especially during and after the pandemic of COVID-19. Kimchi is a popular traditional fermented food originally from Korea and easily changes because of the storage conditions. This study aims to evaluate the effects and the contributions of temperature to volatile compounds, quality indexes, and the shelf life of Halal-certified Kimchi, and to identify alcohol and find the correlation between the identified variables using an electronic nose and conventional method with the integration of multivariate analysis. Thirty-two volatile compounds (VOCs) were detected and correlated with pH, titratable acidity (TA), and lactic acid bacteria (LAB) counts during storage time. Ethanol was also found in the ripened Kimchi and possibly became the critical point of halal Kimchi products besides total acidity, pH, and LAB. Furthermore, the correlation between pH and benzaldehyde, titratable acidity and 3-methylbutanoic acid, and among lactic acid bacteria with ethanol, acetic acid, ethyl acetate, and 3-methylbutanoic acid properly can be used as a given set of variables in the prediction of food quality during storage and distribution.
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Affiliation(s)
- Andri Jaya Laksana
- Department of Food Biotechnology, University of Science and Technology (UST), Daejeon 34113, Korea;
| | - Young-Min Choi
- Enterprise Solution Research Center, Korea Food Research Institute (KFRI), Wanju 55365, Korea;
| | - Jong-Hoon Kim
- Food Safety and Distribution Research Group, Korea Food Research Institute (KFRI), Wanju 55365, Korea; (J.-H.K.); (B.-S.K.)
| | - Byeong-Sam Kim
- Food Safety and Distribution Research Group, Korea Food Research Institute (KFRI), Wanju 55365, Korea; (J.-H.K.); (B.-S.K.)
| | - Ji-Young Kim
- Food Safety and Distribution Research Group, Korea Food Research Institute (KFRI), Wanju 55365, Korea; (J.-H.K.); (B.-S.K.)
- Correspondence:
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10
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Chang L, Mu G, Wang M, Zhao T, Tuo Y, Zhu X, Qian F. Microbial Diversity and Quality-Related Physicochemical Properties of Spicy Cabbage in Northeastern China and Their Correlation Analysis. Foods 2022; 11:foods11101511. [PMID: 35627081 PMCID: PMC9141884 DOI: 10.3390/foods11101511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 05/14/2022] [Accepted: 05/14/2022] [Indexed: 02/05/2023] Open
Abstract
Chinese spicy cabbage (CSC) is a popular special fermented food in Northeast China. The bacterial community and quality of CSC from different regions of northeastern China (Group_J: Jilin province, Group_L: Liaoning province, Group_H: Heilongjiang province) at retail (Group_P) and home-made (Group_C) were investigated in this study. The determination of the microbial community was achieved using high-throughput sequencing and the quality-related physicochemical characteristics included pH, salinity, total acid (TA), amino acid nitrogen (AAN), reducing sugar (RS), nitrite, and biogenic amines (BAs). Based on OPLS-DA analysis, there was a difference between the quality of Group_C and Group_P. No significant difference was observed in province grouping. Proteobacteria and Firmicutes were the dominant phyla, and the dominant genera were Lactobacillus, Pantoea, Weissella, and Pseudomonas. All groups had significant differences in community structure (p < 0.05). Compared with Group_C, the relative abundance of opportunistic pathogens (Pseudomonas and Serratia) in Group_P was lower. Pseudomonas and Serratia were the biomarkers in Group_H. At the genus level, Lactobacilluss and Weissella had a positive correlation with pH, Cadaverrine, and salinity (p < 0.05), however, they were negatively related to tryptamine. Pseudomonas was negatively correlated with salinity (p < 0.05). Bacterial community and physicochemical parameters of CSC, as well as the correlation between them, were discussed in this study, providing a reference for future studies on CSC inoculation and fermentation.
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Affiliation(s)
- Lixuan Chang
- School of Food Science and Technology, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjingzi District, Dalian 116034, China; (L.C.); (G.M.); (M.W.); (Y.T.); (X.Z.)
| | - Guangqing Mu
- School of Food Science and Technology, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjingzi District, Dalian 116034, China; (L.C.); (G.M.); (M.W.); (Y.T.); (X.Z.)
| | - Mingxu Wang
- School of Food Science and Technology, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjingzi District, Dalian 116034, China; (L.C.); (G.M.); (M.W.); (Y.T.); (X.Z.)
| | - Tong Zhao
- Dalian Center for Certification and Food and Drug Control, Dalian 116021, China;
| | - Yanfeng Tuo
- School of Food Science and Technology, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjingzi District, Dalian 116034, China; (L.C.); (G.M.); (M.W.); (Y.T.); (X.Z.)
| | - Xuemei Zhu
- School of Food Science and Technology, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjingzi District, Dalian 116034, China; (L.C.); (G.M.); (M.W.); (Y.T.); (X.Z.)
| | - Fang Qian
- School of Food Science and Technology, Dalian Polytechnic University, No. 1 Qinggongyuan, Ganjingzi District, Dalian 116034, China; (L.C.); (G.M.); (M.W.); (Y.T.); (X.Z.)
- Correspondence: ; Tel.: +86-13130035327; Fax: +86-41186322121
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11
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Revealing the bacterial abundance and diversity in brines from started Spanish-style green table olives. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Kang J, Zheng X, Yang X, Li H, Cheng J, Fan L, Zhao H, Xue Y, Ding Z, Han B. Contrasting summer versus winter dynamic microbial communities and their environmental driving factors in the solid-state saccharification process of Fuyu-flavor Baijiu. Food Res Int 2022; 154:111008. [DOI: 10.1016/j.foodres.2022.111008] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 02/09/2022] [Accepted: 02/10/2022] [Indexed: 01/04/2023]
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13
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Diversity of a Lactic Acid Bacterial Community during Fermentation of Gajami-Sikhae, a Traditional Korean Fermented Fish, as Determined by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry. Foods 2022; 11:foods11070909. [PMID: 35406996 PMCID: PMC8997922 DOI: 10.3390/foods11070909] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/18/2022] [Accepted: 03/21/2022] [Indexed: 12/04/2022] Open
Abstract
Gajami-sikhae is a traditional Korean fermented fish food made by naturally fermenting flatfish (Glyptocephalus stelleri) with other ingredients. This study was the first to investigate the diversity and dynamics of lactic acid bacteria in gajami-sikhae fermented at different temperatures using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). A total of 4824 isolates were isolated from the fermented gajami-sikhae. These findings indicated that Latilactobacillus, Lactiplantibacillus, Levilactobacillus, Weissella, and Leuconostoc were the dominant genera during fermentation, while the dominant species were Latilactobacillus sakei, Lactiplantibacillus plantarum, Levilactobacillus brevis, Weissella koreensis, and Leuconostoc mesenteroides. At all temperatures, L. sakei was dominant at the early stage of gajami-sikhae fermentation, and it maintained dominance until the later stage of fermentation at low temperatures (5 °C and 10 °C). However, L. plantarum and L. brevis replaced it at higher temperatures (15 °C and 20 °C). The relative abundance of L. plantarum and L. brevis reached 100% at the later fermentation stage at 20 °C. These results suggest that the optimal fermentation temperatures for gajami-sikhae are low rather than high temperatures. This study could allow for the selection of an adjunct culture to control gajami-sikhae fermentation.
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Lee M, Song JH, Choi EJ, Yun YR, Lee KW, Chang JY. UPLC-QTOF-MS/MS and GC-MS Characterization of Phytochemicals in Vegetable Juice Fermented Using Lactic Acid Bacteria from Kimchi and Their Antioxidant Potential. Antioxidants (Basel) 2021; 10:antiox10111761. [PMID: 34829632 PMCID: PMC8614894 DOI: 10.3390/antiox10111761] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 10/30/2021] [Accepted: 11/01/2021] [Indexed: 12/22/2022] Open
Abstract
This study aims to investigate fermentative metabolites in probiotic vegetable juice from four crop varieties (Brassica oleracea var. capitata, B. oleracea var. italica, Daucus carota L., and Beta vulgaris) and their antioxidant properties. Vegetable juice was inoculated with two lactic acid bacteria (LAB) (Companilactobacillus allii WiKim39 and Lactococcus lactis WiKim0124) isolated from kimchi and their properties were evaluated using untargeted UPLC-QTOF-MS/MS and GC-MS. The samples were also evaluated for radical (DPPH• and OH•) scavenging activities, lipid peroxidation, and ferric-reducing antioxidant power. The fermented vegetable juices exhibited high antioxidant activities and increased amounts of total phenolic compounds. Fifteen compounds and thirty-two volatiles were identified using UPLC-QTOF-MS/MS and GC-MS, respectively. LAB fermentation significantly increased the contents of d-leucic acid, indole-3-lactic acid, 3-phenyllactic acid, pyroglutamic acid, γ-aminobutyric acid, and gluconic acid. These six metabolites showed a positive correlation with antioxidant properties. Thus, vegetable juices fermented with WiKim39 and WiKim0124 can be considered as novel bioactive health-promoting sources.
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Affiliation(s)
- Moeun Lee
- Research and Development Division, World Institute of Kimchi, Gwangju 61755, Korea; (M.L.); (J.H.S.); (E.J.C.); (Y.-R.Y.)
- Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Korea
| | - Jung Hee Song
- Research and Development Division, World Institute of Kimchi, Gwangju 61755, Korea; (M.L.); (J.H.S.); (E.J.C.); (Y.-R.Y.)
| | - Eun Ji Choi
- Research and Development Division, World Institute of Kimchi, Gwangju 61755, Korea; (M.L.); (J.H.S.); (E.J.C.); (Y.-R.Y.)
| | - Ye-Rang Yun
- Research and Development Division, World Institute of Kimchi, Gwangju 61755, Korea; (M.L.); (J.H.S.); (E.J.C.); (Y.-R.Y.)
| | - Ki Won Lee
- Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon 16229, Korea
- Correspondence: (K.W.L.); (J.Y.C.)
| | - Ji Yoon Chang
- Research and Development Division, World Institute of Kimchi, Gwangju 61755, Korea; (M.L.); (J.H.S.); (E.J.C.); (Y.-R.Y.)
- Correspondence: (K.W.L.); (J.Y.C.)
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Characterization of aroma and bacteria profiles of Sichuan industrial paocai by HS-SPME-GC-O-MS and 16S rRNA amplicon sequencing. Food Res Int 2021; 149:110667. [PMID: 34600669 DOI: 10.1016/j.foodres.2021.110667] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 08/22/2021] [Accepted: 08/24/2021] [Indexed: 01/23/2023]
Abstract
Sichuan industrial paocai and traditional home-made paocai have different aroma profiles due to different manufacturing techniques, but detailed information about the aroma profiles and aroma-producing microorganism of Sichuan industrial paocai remain largely elusive. For this reason, we established and validated an external standard method of headspace solid-phase microextraction gas chromatography-mass spectrometry (HS-SPME-GC-MS) combined with gas chromatography-olfactometry (GC-O) for identification and accurate quantitation of aroma-active compounds in Sichuan industrial paocai. This method was combined with 16S rRNA amplicon sequencing to comprehensively analyze the aroma and bacteria profiles of Sichuan industrial paocai. A total of 121 volatile compounds were identified, among which 36 odorants were identified as aroma-active compounds with aroma intensities (AIs) ranging from 0.67 to 5.00 by GC-O. The types of aroma-active compounds in Sichuan industrial paocai were variety-specific to some extent, but the aroma-active compounds shared by different varieties of Sichuan industrial paocai (i.e., skeleton aroma-active compounds) were phenylethyl alcohol, acetic acid, butanoic acid, 2-methylbutanoic acid, ethyl hexanoate, 4-ethylphenol and 4-ethylguaiacol. Moreover, 17 key aroma-active compounds of AI > 1 in radish paocai were quantitated by external standard method, and their odor activity values (OAVs) were calculated based on the odor thresholds. Further, 12 aroma-active compounds with OAV ≥ 1 in one of the radish paocai were selected to construct the recombination model, which revealed good agreement with the original sample. Furthermore, Lactobacillus, Pediococcus, Pseudomonas and Sphingomonas were the dominant bacteria in Sichuan industrial paocai. Correlation analysis between 16 dominant bacteria and 36 aroma-active compounds showed that Pediococcus, Arcobacter and Lactobacillus could be the core aroma-producing bacteria of Sichuan industrial paocai.
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16
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Mun SY, Seo YJ, Chang HC. Characterization of the Psychrotrophic Lactic Acid Bacterium Leuconostoc gelidum subsp. aenigmaticum LS4 Isolated from Kimchi Based on Comparative Analyses of Its Genomic and Phenotypic Properties. Foods 2021; 10:foods10081899. [PMID: 34441676 PMCID: PMC8391443 DOI: 10.3390/foods10081899] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/30/2021] [Accepted: 08/13/2021] [Indexed: 11/28/2022] Open
Abstract
With the aim of developing a new food starter culture, twenty-three psychrotrophic lactic acid bacteria (LAB) were isolated from 16 kimchi samples. One strain, Leuconostoc gelidum subsp. aenigmaticum LS4, which had typical psychrotrophic characteristics, was selected, and its phenotypic and genomic properties as a starter culture were investigated. The complete genome of L. aenigmaticum LS4 consisted of one circular chromosome (1,988,425 bp) and two plasmids (19,308 bp and 11,283 bp), with a guanine–cytosine content of 36.8%. L. aenigmaticum LS4 could grow at 5 °C but not at 37 °C, and maximum cell growth was obtained at 15~25 °C. L. aenigmaticum LS4 did not show any harmful characteristics such as hemolysis, undesirable enzyme activities, biogenic amine production, or antibiotic resistance. L. aenigmaticum LS4 was investigated for its suitability for technological processes (pH, temperature and NaCl treatment). L. aenigmaticum LS4 exhibited strong antimicrobial activity caused by the production of organic acids and bacteriocin, and it produced an exopolysaccharide composed of glucose with a molecular weight of 3.7 × 106 Da. Furthermore, L. aenigmaticum LS4 improved the organoleptic qualities of kimchi juice. Our results indicate that L. aenigmaticum LS4 could be used as a functional starter culture for food (vegetable or fruit) fermentation at low temperatures.
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17
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Real-time PCR method for qualitative and quantitative detection of Lactobacillus sakei group species targeting novel markers based on bioinformatics analysis. Int J Food Microbiol 2021; 355:109335. [PMID: 34343716 DOI: 10.1016/j.ijfoodmicro.2021.109335] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 06/06/2021] [Accepted: 07/17/2021] [Indexed: 11/21/2022]
Abstract
Latilactobacillus sakei group comprises four closely related species, making it difficult to accurately distinguish them with standard markers such as the 16S rRNA gene. The objective of our study was to mine novel markers for PCR detection and discrimination of L. sakei group species and L. sakei subspecies by comparative pan-genomic analysis. A total of 63 genome sequences of L. sakei group species consisted of 119,899 coding genes, yielding 5741 pan-genomes, 831 core-genomes, 3347 accessory-genomes, and 1563 unique-genomes. The accessory-genome was compared to extract unique candidate genes common only to genomes of the same species. The candidate genes were then aligned with the other bacterial genomes to select marker genes present in all genomes of a given species, but not in the genomes of other species. We identified the arginine/ornithine antiporter, putative cell surface protein precursor, sodium:solute symporter, PRD domain protein, PTS sugar transporter subunit IIC, and phosphoenolpyruvate-dependent sugar phosphotransferase system EIIC as marker genes for L. sakei, L. sakei subsp. sakei, L. sakei subsp. carnosus, L. curvatus, L. graminis, and L. fuchuensis, respectively. Primer pairs were designed for each marker and showed 100% specificity for 48 lactic acid bacterial reference strains. The PCR method developed in this study was used to evaluate 106 strains isolated from fermented foods to demonstrate that the marker genes provided a viable alternative to the 16S rRNA gene. We also applied the method to the monitoring of kimchi samples to quantify L. sakei group species or subspecies. Our PCR method based on novel markers can rapidly identify L. sakei group with high accuracy and high throughput.
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18
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Jia Y, Niu CT, Zheng FY, Liu CF, Wang JJ, Lu ZM, Xu ZH, Li Q. Development of a defined autochthonous starter through dissecting the seasonal microbiome of broad bean paste. Food Chem 2021; 357:129625. [PMID: 33864999 DOI: 10.1016/j.foodchem.2021.129625] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 02/16/2021] [Accepted: 03/14/2021] [Indexed: 10/21/2022]
Abstract
Bean-based fermentation foods are usually ripened in open environment, which would lead to inconsistencies in flavor and quality between batches. The physicochemical metabolism and microbial community of seasonal broad bean paste (BBP) were compared to distinguish discriminant metabolites and unique taxa, as well as their specific reasons for different flavor and quality in this study. Here, we found that environmental variables led to the seasonal distribution of microbiota, and differential microorganisms further contributed to the inconsistency of flavor quality, in which Lactobacillales was responsible for the higher titratable acid and amino acid nitrogen concentration in winter pei, while Saccharomycetales benefited the formation of volatile flavor substances in autumn pei. Additionally, we compared the effect of different combinations of Lactobacillales with Zygosaccharomyces rouxii on the quality of BBP, and found that W. confusa was more suitable for BBP fermentation rather than T. halophilus in terms of sensory characteristics and physicochemical metabolites.
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Affiliation(s)
- Yun Jia
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Cheng-Tuo Niu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Fei-Yun Zheng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Chun-Feng Liu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jin-Jing Wang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China.
| | - Qi Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Synergetic Innovation Center of Jiangsu Modern Industrial Fermentation, Jiangnan University, Wuxi 214122, China.
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19
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Guan Q, Zheng W, Mo J, Huang T, Xiao Y, Liu Z, Peng Z, Xie M, Xiong T. Evaluation and comparison of the microbial communities and volatile profiles in homemade suansun from Guangdong and Yunnan provinces in China. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:5197-5206. [PMID: 32530042 DOI: 10.1002/jsfa.10569] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 05/30/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Suansun is a traditional salt-free fermented bamboo shoot product that has been widely consumed as a cooking ingredient in south China for centuries. The aim of this study was to evaluate and compare the microbial and metabolic diversity in samples of two kinds of suansun, namely Guangdong suansun (GD) and Yunnan suansun (YN), using high-throughput sequencing (HTS) and headspace solid-phase microextraction-gas chromatograph-mass spectrometry (HS-SPME/GC-MS), respectively, and then to assess the influence of environmental factors on the microbial communities. RESULTS The results showed that Lactobacillus and Serratia were the most abundant bacterial genera in both the GD and YN groups. For the fungi, Pichia, Candida, and Debaryomyces were the major genera in the GD group, whereas Pichia and Zygosaccharomyces were the dominant genera in the YN group. The canonical correlation analysis (CCA) results demonstrated that three environmental factors - temperature, longitude, and altitude - play a more important role in affecting the microbial community composition of suansun than physical and chemical factors. The fugal community composition was more influenced by environmental factors than the bacterial community. The volatile profile of the GD group differed from that of the YN group, and the difference was mainly reflected in the relative alcohol, aldehyde, ester, and aromatic compound content. CONCLUSIONS This study provided insights into the microbial and metabolic profiles of suansun products. The findings might be useful for the improvement and standardization of suansun production. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Qianqian Guan
- State Key Laboratory of Food Science and Technology, Nanchang, PR China
- School of Food Science and Technology, Nanchang University, Nanchang, PR China
| | - Wendi Zheng
- State Key Laboratory of Food Science and Technology, Nanchang, PR China
- School of Food Science and Technology, Nanchang University, Nanchang, PR China
| | - Jialing Mo
- State Key Laboratory of Food Science and Technology, Nanchang, PR China
- School of Food Science and Technology, Nanchang University, Nanchang, PR China
| | - Tao Huang
- State Key Laboratory of Food Science and Technology, Nanchang, PR China
- School of Food Science and Technology, Nanchang University, Nanchang, PR China
| | - Yangsheng Xiao
- State Key Laboratory of Food Science and Technology, Nanchang, PR China
- School of Food Science and Technology, Nanchang University, Nanchang, PR China
| | - Zhanggen Liu
- State Key Laboratory of Food Science and Technology, Nanchang, PR China
- School of Food Science and Technology, Nanchang University, Nanchang, PR China
| | - Zhen Peng
- State Key Laboratory of Food Science and Technology, Nanchang, PR China
- School of Food Science and Technology, Nanchang University, Nanchang, PR China
| | - Mingyong Xie
- State Key Laboratory of Food Science and Technology, Nanchang, PR China
| | - Tao Xiong
- State Key Laboratory of Food Science and Technology, Nanchang, PR China
- School of Food Science and Technology, Nanchang University, Nanchang, PR China
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20
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Kim E, Cho EJ, Yang SM, Kim MJ, Kim HY. Novel approaches for the identification of microbial communities in kimchi: MALDI-TOF MS analysis and high-throughput sequencing. Food Microbiol 2020; 94:103641. [PMID: 33279067 DOI: 10.1016/j.fm.2020.103641] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 09/10/2020] [Accepted: 09/12/2020] [Indexed: 12/22/2022]
Abstract
Complex interactions occur within microbial communities during the fermentation process of kimchi. Identification of these microorganisms provides the essential information required to improve food quality and to understand their role in this process. This was the first study to compare two methods for accuracy in the identification of microbial community changes during the fermentation of kimchi by comparing a culture-dependent (MALDI-TOF MS analysis) and a culture-independent method (high-throughput sequencing) of 16S rRNA gene fragment). Members of the Lactobacillus-related genera, Leuconostoc, and Weissella were identified as the predominant microorganisms by both methods. The culture-independent method was able to additionally identify non-lactic acid bacteria and yeasts, such as Kazachstania in kimchi. However, high-throughput sequencing failed to accurately recognize Latilactobacillus sakei, Latilactobacillus curvatus, Lactiplantibacillus plantarum, and W. cibaria, which played an important role in kimchi fermentation, as this method only allowed for identification at the genus level. Conversely, MALDI-TOF MS analysis could identify the isolates at the species level. Also, culture-dependent method could identify predominant species in viable cell communities. The culture-dependent method and culture-independent method provided complementary information by producing a more comprehensive view of the microbial ecology in fermented kimchi.
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Affiliation(s)
- Eiseul Kim
- Institute of Life Sciences & Resources and Department of Food Science and Biotechnology, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Eun-Ji Cho
- Institute of Life Sciences & Resources and Department of Food Science and Biotechnology, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Seung-Min Yang
- Institute of Life Sciences & Resources and Department of Food Science and Biotechnology, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Mi-Ju Kim
- Institute of Life Sciences & Resources and Department of Food Science and Biotechnology, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Hae-Yeong Kim
- Institute of Life Sciences & Resources and Department of Food Science and Biotechnology, Kyung Hee University, Yongin, 17104, Republic of Korea.
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21
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Lee M, Song JH, Shim WB, Chang JY. DNAzyme-based quantitative loop-mediated isothermal amplification for strain-specific detection of starter kimchi fermented with Leuconostoc mesenteroides WiKim32. Food Chem 2020; 333:127343. [PMID: 32663746 DOI: 10.1016/j.foodchem.2020.127343] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 05/23/2020] [Accepted: 06/12/2020] [Indexed: 02/01/2023]
Abstract
Leuconostoc spp. are generally utilized as kimchi starters because of their beneficial effects on kimchi fermentation and sensory characteristics. We developed a DNAzyme-based colorimetric method for measuring the abundance of the kimchi starter Leuconostoc mesenteroides WiKim32. A primer set for loop-mediated isothermal amplification and target-specific DNAzyme was designed based on the WiKim32 nucleotide sequence. In the presence of the target amplicon, DNAzyme bound to it, resulting in negligible amounts of green product. In contrast, with the addition of hemin and in the absence of the target amplicon, DNAzyme fragments not bound to the target amplicon formed G-quadruplex-hemin conjugates, generating a visible green product by oxidizing 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) diammonium salt. There was no cross-reaction with other strains. The method had high detection sensitivity and quantitative capacity in kimchi samples without a requirement for DNA isolation. This strategy provides a rapid, sensitive, and simple detection method with possible industrial applications.
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Affiliation(s)
- Moeun Lee
- Research and Development Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
| | - Jung Hee Song
- Research and Development Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
| | - Won Bo Shim
- Department of Agricultural Chemistry and Food Science & Technology, Gyeongsang National University, Jinju, Gyeongnam 52828, Republic of Korea.
| | - Ji Yoon Chang
- Research and Development Division, World Institute of Kimchi, Gwangju 61755, Republic of Korea.
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22
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Liu L, She X, Chen X, Qian Y, Tao Y, Li Y, Guo S, Xiang W, Liu G, Rao Y. Microbiota Succession and Chemical Composition Involved in the Radish Fermentation Process in Different Containers. Front Microbiol 2020; 11:445. [PMID: 32318030 PMCID: PMC7146078 DOI: 10.3389/fmicb.2020.00445] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 03/02/2020] [Indexed: 11/25/2022] Open
Abstract
Traditional Chinese fermented vegetables are a type of brine-salted fermented vegetable product. During the spontaneous fermentation, various compounds are produced, degraded, and converted, influencing the quality of the fermented pickle. To ascertain the effect of different containers on the fermentation process of the pickles, this study investigated the bacterial diversity and the chemical composition characteristics of the pickle (radish) fermented in commonly used containers including glass jars (GL), porcelain jars (PO), and plastic jars (PL). The correlation between chemical compounds and microbial community was further analyzed. The changes in pH values suggested that PL may facilitate the quickest fermentation of the pickles, while the process in PO progressed at the lowest rate. The PL brine samples contained higher levels of lactic acid and threonine, while more abundant volatile chemical compounds were evident in PO. The container materials had no significant influence on the microbial structure, wherein Lactobacillus was the absolute dominant genus in all containers. But container material did have an effect on the abundance of specific genus, such as Lactococcus and Pediococcus. The correlation between these major genera was also analyzed and gene function prediction indicated that the top three pathways were: carbohydrate metabolism, amino acid metabolism, and energy metabolism. Lactobacillus negatively correlated with methionine, tyrosine, lysine, and arginine, but positively correlated with ammonia, and lactic acid and acetic acid both just correlated with Pediococcus. This study provides new insights into the microbiota succession and chemical compounds involved in the vegetable fermentation.
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Affiliation(s)
- Lei Liu
- School of Food Science and Bioengineering, Xihua University, Chengdu, China
| | - Xiao She
- School of Food Science and Bioengineering, Xihua University, Chengdu, China
| | - Xing Chen
- School of Food Science and Bioengineering, Xihua University, Chengdu, China
| | - Yang Qian
- School of Food Science and Bioengineering, Xihua University, Chengdu, China.,Department of Wine and Food Engineering, Sichuan Technology and Business College, Dujiangyan, China
| | - Yufei Tao
- School of Food Science and Bioengineering, Xihua University, Chengdu, China
| | - Yalin Li
- School of Food Science and Bioengineering, Xihua University, Chengdu, China
| | - Shuyu Guo
- School of Food Science and Bioengineering, Xihua University, Chengdu, China
| | - Wenliang Xiang
- School of Food Science and Bioengineering, Xihua University, Chengdu, China
| | - Guorong Liu
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University, Beijing, China
| | - Yu Rao
- School of Food Science and Bioengineering, Xihua University, Chengdu, China
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23
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He Z, Chen H, Wang X, Lin X, Ji C, Li S, Liang H. Effects of different temperatures on bacterial diversity and volatile flavor compounds during the fermentation of suancai, a traditional fermented vegetable food from northeastern China. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2019.108773] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Lee M, Song JH, Park JM, Chang JY. Bacterial diversity in Korean temple kimchi fermentation. Food Res Int 2019; 126:108592. [DOI: 10.1016/j.foodres.2019.108592] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 07/23/2019] [Accepted: 07/26/2019] [Indexed: 01/02/2023]
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25
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Wang J, Wang R, Xiao Q, Liu C, Jiang L, Deng F, Zhou H. Analysis of bacterial diversity during fermentation of Chinese traditional fermented chopped pepper. Lett Appl Microbiol 2019; 69:346-352. [DOI: 10.1111/lam.13212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 08/26/2019] [Accepted: 08/27/2019] [Indexed: 12/22/2022]
Affiliation(s)
- J. Wang
- College of Food Science and Technology Hunan Agricultural University Changsha People’s Republic of China
- Hunan Provincial Key Laboratory of Food Science and Biotechnology Changsha People’s Republic of China
| | - R. Wang
- College of Food Science and Technology Hunan Agricultural University Changsha People’s Republic of China
- Hunan Provincial Key Laboratory of Food Science and Biotechnology Changsha People’s Republic of China
| | - Q. Xiao
- College of Food Science and Technology Hunan Agricultural University Changsha People’s Republic of China
- Hunan Provincial Key Laboratory of Food Science and Biotechnology Changsha People’s Republic of China
| | - C. Liu
- College of Food Science and Technology Hunan Agricultural University Changsha People’s Republic of China
- Hunan Provincial Key Laboratory of Food Science and Biotechnology Changsha People’s Republic of China
| | - L. Jiang
- College of Food Science and Technology Hunan Agricultural University Changsha People’s Republic of China
- Hunan Provincial Key Laboratory of Food Science and Biotechnology Changsha People’s Republic of China
| | - F. Deng
- College of Food Science and Technology Hunan Agricultural University Changsha People’s Republic of China
- Hunan Provincial Key Laboratory of Food Science and Biotechnology Changsha People’s Republic of China
| | - H. Zhou
- College of Food Science and Technology Hunan Agricultural University Changsha People’s Republic of China
- Hunan Provincial Key Laboratory of Food Science and Biotechnology Changsha People’s Republic of China
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26
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Rezac S, Kok CR, Heermann M, Hutkins R. Fermented Foods as a Dietary Source of Live Organisms. Front Microbiol 2018; 9:1785. [PMID: 30197628 PMCID: PMC6117398 DOI: 10.3389/fmicb.2018.01785] [Citation(s) in RCA: 207] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 07/17/2018] [Indexed: 01/08/2023] Open
Abstract
The popularity of fermented foods and beverages is due to their enhanced shelf-life, safety, functionality, sensory, and nutritional properties. The latter includes the presence of bioactive molecules, vitamins, and other constituents with increased availability due to the process of fermentation. Many fermented foods also contain live microorganisms that may improve gastrointestinal health and provide other health benefits, including lowering the risk of type two diabetes and cardiovascular diseases. The number of organisms in fermented foods can vary significantly, depending on how products were manufactured and processed, as well as conditions and duration of storage. In this review, we surveyed published studies in which lactic acid and other relevant bacteria were enumerated from the most commonly consumed fermented foods, including cultured dairy products, cheese, fermented sausage, fermented vegetables, soy-fermented foods, and fermented cereal products. Most of the reported data were based on retail food samples, rather than experimentally produced products made on a laboratory scale. Results indicated that many of these fermented foods contained 105-7 lactic acid bacteria per mL or gram, although there was considerable variation based on geographical region and sampling time. In general, cultured dairy products consistently contained higher levels, up to 109/mL or g. Although few specific recommendations and claim legislations for what constitutes a relevant dose exist, the findings from this survey revealed that many fermented foods are a good source of live lactic acid bacteria, including species that reportedly provide human health benefits.
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Affiliation(s)
| | | | | | - Robert Hutkins
- Department of Food Science and Technology, University of Nebraska—Lincoln, Lincoln, NE, United States
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