Abstract: This study compared fermentation, membrane and washing as three detection methods for contaminating microbes in precast plastic containers for dairy products at different storage periods and at different degrees of contamination. Filtration and washing were more effective sampling means and could provide a better understanding of microbial contamination in the plastic containers than fermentation. However, filtration was unsuitable for high-level contamination. Therefore, the washing method is more suitable for large-scale detection in industrial practice.

Key words: dairy; prefabricated plastic container; detection methods; fermentation; membrane filter; washing

摘要： 研究不同检测方法反应出的容器污染情况,采用发酵法、滤膜法以及涮洗法对乳品塑料预制瓶容器在不同贮存时间和不同污染程度所产生微生物进行检测.结果表明:发酵法不能全面反应出容器的污染情况,涮洗法和滤膜法的采样方式更全面,能更好地反应污染情况.但滤膜法不适用于高污染的环境下的检测.因此,涮洗法更适合在工业化生产中用于批量检测.

关键词: 乳品；预制塑料容器；检测方法；发酵法；滤膜法；涮洗法