食品科学

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PCR-DGGE分析四川地区家庭制作泡菜中微生物多样性

张先琴,张小平,敖晓琳,刘骁蒨,蒲 彪   

  1. 1.四川农业大学资源环境学院,四川 成都 611130;2.四川农业大学食品学院,四川 雅安 625014
  • 出版日期:2013-06-25 发布日期:2013-06-17

PCR-DGGE Analysis of Microbial Diversity of Homemade Pickles in Sichuan Region

ZHANG Xian-qin,ZHANG Xiao-ping,AO Xiao-lin,LIU Xiao-qian,PU Biao   

  1. 1. College of Resource and Environmental Science, Sichuan Agricultural University, Chengdu 611130, China;
    2. College of Food Science, Sichuan Agricultural University, Ya’an 625014, China
  • Online:2013-06-25 Published:2013-06-17

摘要:

以四川家庭制作泡菜为研究对象,通过聚合酶链式反应和变性梯度凝胶电泳结合(PCR-DGGE)指纹图谱技术分析样品中微生物群落结构,对典型条带进行系列分析,并构建系统发育进化树。结果表明:四川家庭制作泡菜中的细菌种类比较丰富,真菌在泡菜中存在相对较少。细菌中乳杆菌属(Lactobacillus)是优势种群,非培养细菌(uncultured bacteria)是次优势种群,分别占总数的56%和32%,其中植物乳杆菌(Lactobacillus plantarum)在泡菜发酵中发挥着重要的作用;主要真菌为(Meyerozyma guilliermondii)和奥默柯达酵母(Kodamaea ohmeri)的近缘种。

关键词: 聚合酶链式反应和变性梯度凝胶电泳, 泡菜, 微生物多样性, 细菌, 真菌

Abstract:

The microbial diversity of 20 homemade pickles in Sichuan region was analyzed by PCR-DGGE. Meanwhile,
representative stripes were selected to be sequenced for construction of a phylogentic tree based on their sequences.
The results revealed abundant bacteria species but a few fungi in the pickles. The genus Lactobacillus was the dominant
populations while uncultured bacteria were sub-dominant populations, which accounted for 56% and 32% of the total
bacteria species, respectively. Lactobacillus plantarum played an important role in pickle fermentation. The closely related
species of Meyerozyma guilliermondii and Kodamaea ohmeri were the predominant fungi in Sichuan homemade pickles.

Key words: polymerase chain reaction-denatured gradient gelel ectrophoresis(PCR)-DGGE, pickle, microbial diversity, bacteria, fungi