食品科学

• 技术应用 • 上一篇    

16S rDNA和PCR-DGGE技术分析水晶肘花胀袋的微生物原因

高 鹏,王 艳,黄 敏,陈 浩,孙 群   

  1. 1.四川省原子能研究院,四川 成都 610101;
    2.四川大学生命科学学院,生物资源与生态环境教育部重点实验室,四川 成都 610064
  • 出版日期:2013-07-25 发布日期:2013-08-02

Microbiological Causes of Swollen Bag in Pork Jelly Analyzed by 16S rDNA and PCR-DGGE

GAO Peng,WANG Yan,HUANG Min,CHEN Hao,SUN Qun   

  1. 1. Sichuan Institute of Atomic Energy, Chengdu 610101, China;2. Key Laboratory for Bio-resources and Eco-environment,Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610064, China
  • Online:2013-07-25 Published:2013-08-02

摘要:

为了探索真空包装肘花胀袋的原因,应用16S rDNA序列分析和聚合酶链式反应-变性梯度凝胶电泳(PCRDGGE)技术对从正常和胀袋的肘花产品中分离纯化到的14和18株菌进行种类比较分析。结果表明,胀袋组中含有对照组没有的细菌种类,这些菌株主要是芽孢杆菌(包括枯草芽孢杆菌(Bacillus subtilis)和地衣芽孢杆菌(Bacillus licheniformis))以及嗜麦芽窄食单胞菌(Stenotrophomonas maltophilia)和该属的另一株菌Stenotrophomonas pavanii);这些菌株主要是包括产气荚膜梭菌(Clostridium perfringens)在内的梭状芽孢杆菌(Clostridium sp.)和假单胞菌(Pseudomonas sp.),推断芽孢杆菌属和梭状芽孢杆菌属细菌的存在可能是引起产品胀袋从而使产品变质的主要原因。

关键词: 肘花, 胀袋, 16S rDNA, 聚合酶链式反应-变性梯度凝胶电泳, 枯草芽孢杆菌, 产气荚膜梭菌

Abstract:

Swollen bag can affect the quality of vacuum packaged meat products. The causes of swollen bag in pork
jelly were studied. Totally 14 and 18 stains isolated from the control group and package swollen pork jelly group were
identified by 16S rDNA analysis, and PCR-DGGE was also used to analyze the bacterial community in the two groups.
According to the results, some bacteria were detected in the package swollen pork jelly group, but were not found in
the control group. The results showed that these bacteria included Bacillus sp. (including Bacillus subtilis and Bacillus
licheniformis) and Stenotrophomonas sp. (including Stenotrophomonas maltophilia and Stenotrophomonas pavanii) as
identified by 16S rDNA analysis, and included Clostridium sp. (including Clostridium perfringens) and Pseudomonas sp.
as identified by PCR-DGGE. It is speculated that the presence of Bacillus sp. and Clostridium sp. may be the major reason
for swollen bag that causes product deterioration.

Key words: pork jelly, swollen bag, 16S rDNA, polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE), Bacillus subtilis, Clostridium perfringens