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| 乳酸菌计数结果的比较研究 |
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王杰1, 郑亦舟1, 姜凯2, 施凡凡1, 袁静芸3, 王静彦3, 赵渝1, 矫强4
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1.上海师范大学 生命科学学院 植物种质资源开发协同创新中心, 上海 200234;2.上海市质量监督检验技术研究院, 上海 201114;3.上海师范大学附属中学, 上海 200124;4.贝克曼库儿特商贸(中国)有限公司, 上海 200235
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| 摘要: |
| 通过流式细胞术（FCM），利用SYTO©24与PI双染色对发酵乳制品即发酵乳饮料和发酵乳中的乳酸菌进行快速检测，并将检测结果与用现行国标中推荐的平板计数法检测得到的结果相比较，两者对发酵乳饮料和发酵乳中乳酸菌的计数结果的相关性系数分别为：0.9014；和0.9653，都符合较好.而且FCM稳定性更好，活性细菌的变异率为3.46%，非活性细菌的变异率为3.56%；检测速度更快，单样品检测时间不超过10 min；灵敏度更高（103 AFU·mL-1）FCM在需要快速放行的液体产品检测领域中具有广阔的应用前景. |
| 关键词: 流式细胞技术(FCM) 乳酸菌计数 比较研究 |
| DOI：10.3969/J.ISSN.1000-5137.2018.06.011 |
| 分类号:TS207.4 |
| 基金项目:益生菌课程接力计划（C-6105-18-049）；上海市协同创新中心项目（ZF1205）；上海植物种质资源工程技术研究中心项目（17DZ2252700）；上海市2017年度"科技创新行动计划"（17142203000）；贝克曼中国-上海师范大学横向课题项目（C-6105-17-044） |
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| Comparative study on counting results in Lactobacillus counting method |
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WANG Jie1, ZHENG Yizhou1, JIANG Kai2, SHI Fanfan1, YUAN Jingyun3, WANG Jingyan3, ZHAO Yu1, JIAO Qiang4
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1.Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China;2.Shanghai Institute of Quality Inspection and Technical Research, Shanghai 201114, China;3.High School Attached to Shanghai Normal University, Shanghai 200124, China;4.Becman Coulter Corporation Enterprise(China) Ltd, Shanghai 200235, China
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| Abstract: |
| By using flow cytometry method (FCM) and SYTO©24 and PI double staining,the lactic acid bacteria in fermented milk products,fermented milk beverage and fermented milk were quickly detected.And the results are compared with those of the plate counting method recommended in the current national standard.The results showed that the correlation coefficient of the count of lactic acid bacteria in fermented milk beverage detected by two methods was P=0.9014.The correlation coefficient of the count of lactic acid bacteria in fermented milk detected by two methods was P=0.9653.It was in good agreement with each other.And the stability of flow cytometry was good,the coefficient of variation(CV) of active bacteria was 3.46%,and the CV of inactivated bacteria was 3.56%.The detection speed is fast,the single sample detection time is not more than 10 minutes,and the sensitivity is higher (103 AFU·mL-1).It can be seen that this method has broad application prospects for liquid products that need rapid release. |
| Key words: flow cytometry method (FCM) count of lactic acid bacteria comparative study |
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