| Title: | Analysis of Microbial Diversity and Metabolites in Sauerkraut Products with and without Microorganism Addition |
| Author(s): | Liu Y; Chen X; Li F; Shi H; He M; Ge J; Ling H; Cheng K; |
| Address: | "Engineering Research Center of Agricultural Microbiology Technology, Ministry of Education & Heilongjiang Provincial Key Laboratory of Plant Genetic Engineering and Biological Fermentation Engineering for Cold Region & Key Laboratory of Microbiology, College of Heilongjiang Province & School of Life Sciences, Heilongjiang University, Harbin 150080, China. Engineering Research Center of Health Food Design & Nutrition Regulation, School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China. Dongguan Institute of Technology Innovation, Dongguan 523000, China" |
| ISSN/ISBN: | 2304-8158 (Print) 2304-8158 (Electronic) 2304-8158 (Linking) |
| Abstract: | "The microbial compositions and metabolites of fermented sauerkraut with and without the addition of microorganisms have been compared. The OTU clustering, nonvolatile compounds, volatile compounds and associations between bacterial taxa and metabolites were analyzed by 16S rRNA high-throughput sequencing technology, ultra performance liquid chromatography (UPLC), gas chromatography ion mobility mass spectrometry (GC-IMS) and the O2PLS model studies. The results showed that at the phylum level, the microbial species in the four sauerkraut types consisted mainly of the phyla Firmicutes and Proteobacteria, but different modes of microbial addition formed their own unique microbial communities. There were significant differences in the microbial communities among different northeast China sauerkraut samples, and different microbial communities exerted similar effects to inhibit Firmicutes production. At the genus level, sauerkraut without added microorganisms had the lowest microbial diversity. A total of 26 amino acids and 11 organic acids were identified and were more abundant in nonmicrobially fermented sauerkraut; 88 volatile organic compounds were identified in the 4 types of sauerkraut, with the microbially fermented sauerkraut being richer in alcohols, esters and acids. Different brands of sauerkraut contain their own unique flavor compounds. Cystine and tyrosine, ascorbic acid and acetic acid, and alcohols and esters are closely related to a wide range of microorganisms in sauerkraut. Elucidating the correlations among microbiota and metabolites will help guide future improvements in sauerkraut fermentation processes" |
| Keywords: | correlation analysis metabolome microbial composition northeast sauerkraut; |
| Notes: | "PubMed-not-MEDLINELiu, Yueyi Chen, Xiaochun Li, Fuxiang Shi, Huiling He, Mingyi Ge, Jingping Ling, Hongzhi Cheng, Keke eng KCYCXPT2017007/High-level Talents Project of Dongguan University of Technology/ 2021B1515140041/Guangdong Basic and Applied Basic Research Foundation/ 2017KCXTD030/Guangdong Innovation Research Team for Higher Education/ Switzerland 2023/03/30 Foods. 2023 Mar 9; 12(6):1164. doi: 10.3390/foods12061164" |
