食品科学 ›› 2013, Vol. 34 ›› Issue (3): 163-168.

• 生物工程 • 上一篇    下一篇

四川宜宾芽菜中乳酸菌分离筛选及菌相分析

尹曦1,蒲彪1,陈安均1,敖晓琳1,张小平2   

  1. 1. 四川农业大学食品学院
    2. 四川农业大学资源与环境学院
  • 收稿日期:2011-10-20 修回日期:2013-01-10 出版日期:2013-02-15 发布日期:2017-12-29
  • 通讯作者: 蒲彪 E-mail:pubiao2002@yahoo.com.cn
  • 基金资助:
    国家自然科学基金资助项目;四川省科技支撑计划项目

Analysis on Isolation, Selection and Microflora of Lactic acid bacteria (LAB) in Sichuan Yibin Pickled mustard vein

  • Received:2011-10-20 Revised:2013-01-10 Online:2013-02-15 Published:2017-12-29
  • Contact: Pu Biao E-mail:pubiao2002@yahoo.com.cn

摘要: 摘 要:采用6种选择性培养基对宜宾芽菜中的乳酸菌进行分离纯化,通过pH值测定和乳酸定性,筛选出72h时pH值在4.0以下和产生乳酸与标样Rf值相近的菌株进行后续试验。采用16S rDNA PCR-RFLP、ERIC-PCR对筛选出的菌株进行遗传多样性分析,通过分析16S rDNA序列研究了宜宾芽菜中乳酸菌菌相及其系统发育。16S rDNA PCR-RFLP和ERIC-PCR指纹图谱分析结果表明宜宾芽菜中乳酸菌遗传多样性丰富。根据16S rDNA PCR-RFLP和ERIC-PCR聚类图分析,选取中心菌株进行序列分析,并构建系统发育树,结果显示:宜宾芽菜中主要的乳酸菌为戊糖片球菌(Pediococcus pentosaceus),植物乳杆菌(Lactobacillus plantarum),坚强肠球菌(Eenterococcus durans)、屎肠球菌(Eenterococcus faecium)。

Abstract: Abstract:Six kinds of selective medium were used to isolate lactic acid bacteria from Sichuan Yibin Pickled mustard vein. The determination of pH was lower more than 4.0 in 72h and Rf values was similar to standard sample of lactic acid bacteria were selected for follow-up test. 16S rDNA PCR-RFLP and ERIC-PCR were used to analyze the genetic diversity of strains. 16S rDNA sequence analysis was studied microflora and phylogeny of lactic acid bacteria in Yibin Pickled mustard vein.16S rDNA PCR-RFLP and ERIC-PCR analysis showed that lactic acid bacteria have rich genetic diversity. Based on the fingerprint of 16S rDNA PCR-RFLP and ERIC-PCR, representative strains were selected to construct the phylogenetic tree and the results showed the dominating lactic acid bacteria in Yibin Pickled mustard vein were Pediococcus pentosaceus, Lactobacillus plantarum, Eenterococcus durans and Eenterococcus faecium

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