食品与发酵工业 >

2023 , Vol. 49 >Issue 23: 111 - 118

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.035228

研究报告

萝卜泡菜母水中乳酸菌分离鉴定与发酵特性比较

  • 胡此海 ,
  • 杨絮 ,
  • 郭全友 ,
  • 李保国 ,
  • 郑尧 ,
  • 黄海潮 ,
  • 范逸文
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  • 1(中国水产科学研究院 东海水产研究所,上海,200090)
    2(上海理工大学 健康科学与工程学院,上海,200093)
第一作者:硕士研究生(郭全友研究员为通信作者,E-mail:dhsguoqy@163.com)

收稿日期: 2023-02-21

  修回日期: 2023-04-03

  网络出版日期: 2024-01-02

基金资助

中国水产科学研究院基本科研业务费资助项目(2023TD68)

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Isolation, identification, and fermentation characteristics of lactic acid bacteria from the radish pickles brines

  • HU Cihai ,
  • YANG Xu ,
  • GUO Quanyou ,
  • LI Baoguo ,
  • ZHENG Yao ,
  • HUANG Haichao ,
  • FAN Yiwen
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  • 1(East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China)
    2(School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)

Received date: 2023-02-21

  Revised date: 2023-04-03

  Online published: 2024-01-02

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摘要

从四川传统萝卜泡菜母水中分离出优势乳酸菌,对其进行鉴定和发酵特性研究。用纯培养的方法对菌株进行分离纯化,经生理生化实验和16S rDNA测序对菌种进行鉴定。对照类肠膜魏斯氏菌(Weissella paramesenteroides),研究其生长特性、耐受性和降解亚硝酸盐能力,评价筛选菌株的发酵特性,并采用气相色谱-离子迁移谱对菌株产挥发性风味物质的能力进行检测分析。筛选出L2、L3、L7、L15和L24等5株菌分别为:布氏乳杆菌(Lactobacillus buchneri)、短乳杆菌(Lactobacillus brevis)、乳酸片球菌(Pediococcus acidilactici)、植物乳植杆菌(Lactiplantibacillus plantarun)和鼠李糖乳酪杆菌(Lacticaseibacillus rhamnosus)。L15和L24生长速度比其他菌株快;菌株L7、L15和L24产酸能力强;菌株L15和L24对NaCl的耐受性最好;菌株L7的NaNO2耐受性最差;5种菌株降解亚硝酸盐的能力均高于90%。5株乳酸菌产挥发性物质的特征不同,L3产酮类物质相对含量最高,L15样品中醇类物质的相对含量最高,L24样品中酯类物质的相对含量最高。综上,5种乳酸菌均具有发酵泡菜潜能,可作为泡菜功能微生物资源。

关键词： 乳酸菌; 分离鉴定; 耐受性; 发酵特性; 挥发性成分

本文引用格式

胡此海 , 杨絮 , 郭全友 , 李保国 , 郑尧 , 黄海潮 , 范逸文 . 萝卜泡菜母水中乳酸菌分离鉴定与发酵特性比较[J]. 食品与发酵工业, 2023 , 49(23) : 111 -118 . DOI: 10.13995/j.cnki.11-1802/ts.035228

Abstract

The dominant lactic acid bacteria (LAB) strains were isolated and identified from the traditional fermented Sichuan radish pickle brines, and their fermentation characteristics were examined. Isolated strains were identified by physiological and biochemical experiments, as well as 16S rDNA sequencing. The fermentation characteristics of the strains were evaluated including their growth performance, tolerance to salt and nitrite and nitrite degradation capability, compared to strain Weissella paramesenteroides. Gas chromatography-ion mobility spectroscopy (GC-IMS) was used to detect and analyze the volatile flavor substances to evaluate the flavor-producing capability of the strains. Isolated LAB strains L2, L3, L7, L15, and L24 were identified respectively as Lactobacillus buchneri, Lactobacillus brevis, Pediococcus acidilactici, Lactiplantibacillus plantarun and Lacticaseibacillus rhamnosus. Strains L15 and L24 grew faster than others. Strains L7, L15, and L24 showed stronger acid production capability. Strains L15 and L24 showed better tolerance to NaCl. Strain L7 showed the worst tolerance to sodium nitrite. All five strains showed capability to degrade nitrite by more than 90%. The volatile substances produced by the five strains were different. L3 produced the highest content of ketones. L15 produced the highest relative content of alcohols. L24 produced the highest relative content of esters. In summary, all five lactic acid bacteria have the potential to ferment pickles and can be used as functional microbial resources for pickle production.

Key words： lactic acid bacteria; isolation and identification; tolerance; fermentation characteristics; volatile components

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