大理大学学报 ›› 2022, Vol. 7 ›› Issue (8): 33-36.

• 基础医学 • 上一篇    下一篇

云南某地区少数民族农户自制酥油中常见致病菌的检测

陈兆芳12,曹晓兰1,余文静1,杜 涓1,武有聪1*   

  1. 1.大理大学基础医学院,云南大理 6710002.大理护理职业学院基础医学部,云南大理 671000

  • 收稿日期:2021-06-24 修回日期:2021-07-09 出版日期:2022-08-15 发布日期:2022-09-16
  • 通讯作者: 武有聪,教授,博士,E-mail: youcongwu@163.com。
  • 作者简介:陈兆芳,副教授,主要从事病原生物学与病理学研究。
  • 基金资助:
    大理大学临床分子免疫学创新团队项目(ZKLX2019105);大理大学大学生科研基金项目(KYSX201765)

Detection of Common Pathogenic Bacterium in the Ghee Made by Ethnic Minority Farmers in an Area of Yunnan

Chen Zhaofang12Cao Xiaolan1Yu Wenjing1Du Juan1Wu Youcong1*   

  1. 1.Pre-clinical College Dali University Dali Yunnan 671000 China 2. Department of Basic Medicine Dali Nursing Vocational College Dali Yunnan 671000 China

  • Received:2021-06-24 Revised:2021-07-09 Online:2022-08-15 Published:2022-09-16

摘要: 目的:调查云南某地区少数民族农户自制酥油中微生物指标,为酥油的食用安全提供参考。方法:采集酥油样品35份,稀释后测定样品中的细菌总数、霉菌/酵母菌总数,并通过菌落特征、形态染色和生化反应综合鉴定食源性致病菌。结果:检出细菌的酥油样品35份(检出率100.0%),细菌总数lgCFU为(4.08~5.31)/g,细菌总数超标样品26份(超标率74.3%);检出霉菌/酵母菌31份(检出率88.6%),霉菌/酵母菌总数lgCFU为(2.00~4.98)/g,31份样品霉菌/酵母菌总数均超标;检出肠道致病菌4份(检出率11.4%),其中,3株志贺菌,1株普通变形杆菌,未检出金黄色葡萄球菌和大肠埃希菌。结论:该地区酥油的卫生微生物指标堪忧,霉菌污染严重,某些样品分离出肠道致病菌。

关键词: font-family:宋体, ">少数民族;自制酥油;菌落总数;致病菌font-family:", ">

Abstract: Objective: To investigate the microbiological indexes in the ghee made by ethnic minority farmers in an area of Yunnan, and to provide reference for the food safety of the ghee. Methods: 35 ghee samples were collected. The total number of bacteria and molds/yeast in the samples were detected after a series of dilution, and the food-borne pathogens were identified according to colony characteristics, morphological staining and biochemical reaction. Results: Bacteria were detected in all the 35 samples(100.0% detection rate), the logarithm value of CFU(lgCFU) in the 35 samples ranged from 4.08 to 5.31 per gram, and the total number of bacteria in 26 ghee samples(74.3% exceeding standard rate) exceeded the standard number. Molds/yeasts were detected in 31 samples(88.6% detection rate), with lgCFU value of 2.00-4.98 per gram, and bacteria in these 31 samples all exceeded the standard in CFU counting. Additionally, intestinal pathogens were detected in 4 species(11.4% detection rate); 3 strains were suspected as Shigella species, and 1 as Proteus species. Staphylococcus aureus and Escherichia coli were not detected in the samples. Conclusion: The sanitary microbiological index of the ghee in this area is worrying. The mold contamination is serious, and intestinal pathogens are isolated from some samples.

Key words:

ethnic minority">; homemade ghee">; total number of colonies">; pathogenic bacterium

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