生物技术通报 ›› 2018, Vol. 34 ›› Issue (3): 67-74.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0742

• 综述与专论 • 上一篇    下一篇

铜绿假单胞菌检测方法的比较与优化

张帆1,2, 李树垚2, 张子豪1, 蔡雪凤2, 任岩2, 刘凯2, 侯翠艳2, 易欣欣1, 高秀芝1   

  1. 1. 北京农学院食品科学与工程学院 农产品有害微生物及农残安全检测与控制北京市重点实验室 食品质量与安全北京实验室 微生态制剂关键技术开发北京市工程实验室,北京 102206;
    2. 国家食品质量安全监督检验中心,北京 100094
  • 收稿日期:2017-09-07 出版日期:2018-03-20 发布日期:2018-04-10
  • 作者简介:张帆,女,硕士研究生,研究方向食品微生物;E-mail78553511@qq.com
  • 基金资助:
    北京市叶类蔬菜产业创新团队(BAIC07-2017)

Comparison and Optimization of the Detection Method for Pseudomonas aeruginosa

ZHANG Fan1,2, LI Shu-yao2, ZHANG Zi-hao1, CAI Xue-feng2, REN Yan2, LIU Kai2, HOU Cui-yan2, YI Xin-xin1, GAO Xiu-zhi1   

  1. 1. Faculty of Food Science and Engineering,Beijing University of Agriculture,Beijing Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticide Residue,Beijing Laboratory of Food Quality and Safety,Beijing Engineering Laboratory of Probiotics Key Technology Development,Beijing 102206;
    2. China National Food Safety Supervision and Inspection Center,Beijing 100094
  • Received:2017-09-07 Published:2018-03-20 Online:2018-04-10

摘要: 通过铜绿假单胞菌检测方法比较和优化以期获得一种准确度高、操作简单且对实验条件要求不高的检验方法。实验以VITEK 2 Compact全自动细菌鉴定系统鉴定结果为参考,采用GB 8538.57-2016和GB/T7918.4-1987中铜绿假单胞菌的检测方法,对27株试验菌株进行鉴定试验。结果表明,GB 8538.57-2016方法检测结果准确度最低,假阳性检出率为29.6%,GB/T7918.4-1987假阳性检出率为7.4%。以GB 8538.57-2016铜绿假单胞菌的检测方法为例,优化后的检测方法增加了血琼脂平板培养、革兰氏染色及镜检和对血平板所有可疑菌落进行绿脓菌素试验。用改进后的GB 8538-2016铜绿假单胞菌检测方法对27株试验菌株进行验证试验,检验结果与VITEK 2 Compact一致。

关键词: 铜绿假单胞菌, 矿泉水, VITEK 2 Compact, GB 8538.57-2016, GB/T7918.4-1987

Abstract: This work aimed to obtain a simple-operation,more accurate method and requiring low test condition by analyzing and comparing 3 Pseudomonas aeruginosa detection methods. The identification results of VITEK 2 Compact automatic bacterial identification system were used as reference,the test methods of P. aeruginosa in GB 8538.57-2016 and GB/T7918.4-1987 were applied to identify 27 strains. The results showed that the accuracy of the GB 8538.57-2016 method was the lowest,and the false positive rate was 29.6%,while the false positive rate of GB/T7918.4-1987 was 7.4%. In the case of GB 8538.57-2016 P. aeruginosa as an example,three steps were added to the optimized method,the blood agar plate culture,Gram stain and microscopy,and pyocyanin test for all suspicious colonies of the blood agar plate. The 27 test strains were verified by the optimized detection method,and the results were consistent with those of VITEK 2 Compact.

Key words: Pseudomonas aeruginosa, mineral water, VITEK 2 Compact, GB 8538.57-2016, GB/T7918.4-1987