食品科学 ›› 2012, Vol. 33 ›› Issue (13): 225-229.doi: 10.7506/spkx1002-6630-201213048

• 生物工程 • 上一篇    下一篇

鲭鱼鱼肉中组胺产生菌的筛选与鉴定

周卫枫,汤海青,贺林娟,杨华,欧昌荣   

  1. 1. 宁波大学海洋学院
    2. 宁波出入境检验检疫局 3.浙江万里学院生物与环境学院
  • 出版日期:2012-07-15 发布日期:2012-07-27
  • 基金资助:
    宁波市自然科学基金项目(2010A610014);宁波大学科研基金项目(XYL09011;XKI09118;XKI11097)

Screening and Identification of Histamine-Producing Bacteria from Chub mackerel Meat

ZHOUWei-feng,TANGHai-qing,HELin-juan,YANGHua,OUChang-rong   

  1. (1. School of Marine Scineces, Ningbo University, Ningbo 315211, China; 2. Ningbo Entry-Exit Inspection and Quarantine Bureau, Ningbo 315012, China; 3. College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China )
  • Online:2012-07-15 Published:2012-07-27

摘要: 根据产组胺能力,采用二步筛选法从鲭鱼肉中分离、筛选组胺产生菌(HPB),并通过生理生化实验结合16S rRNA序列同源性分析,对分离得到的HPB进行鉴定。结果表明:筛选出的5株组胺产生菌中,2株为革兰氏阴性菌、3株为革兰氏阳性菌,将5株菌接种到含2.0g/100mL组氨酸的培养基中,36℃条件下培养24h,培养液中组胺产量分别为210.5、823.0、130.5、229.0、217.0mg/L。根据生理生化特性与16S rRNA序列同源性分析,分离得到的HPB分别为蒙氏假单胞菌(Pseudomonas monteilii)、弗氏柠檬酸杆菌(Citrobacter freundii)、球形芽孢杆菌(Bacillus sphaericus)、溶酪大球菌(Macrococcus caseolyticus)以及松鼠葡萄球菌(Staphylococcus sciuri)。

关键词: 组胺产生菌, 16S rRNA, 组胺, 鲭鱼, 筛选

Abstract: A two-step procedure was performed to isolate and screen histamine-producing bacteria (HPB) from Chub mackerel meat according to their histamine-producing capability. The screened strains were identified by physiological and biochemical analysis combined with 16S rRNA sequence analysis. The results showed that among five HPB strains isolated from Chub mackerel meat, two strains were gram-negative bacteria and the other three strains were gram-positive bacteria. These five HPB isolates were separately inoculated into a medium containing 2.0 g/100 mL histidine and cultured for 24 h at 36 ℃ to obtain histamine concentrations of 210.5, 823.0, 130.5, 229.0 mg/L and 217.0 mg/L, respectively. They were identified as Pseudomonas monteilii, Citrobacter freundii, Bacillus sphaericus, Macrococcus caseolyticus and Staphylococcus sciuri according to their physiological and biochemical characteristics and molecular biological analysis.

Key words: histamine-producing bacteria, 16S rRNA, histamine, Chub mackerel, screeni

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