标准编号：ISO 19344:2015
中文名称：乳和乳制品 发酵剂、益生菌和发酵产品 用流式细胞计量化乳酸菌
英文名称：Milk and milk products — Starter cultures, probiotics and fermented products — Quantification of lactic acid bacteria by flow cytometry
发布日期：2015-12
标准范围
This International Standard specifies a standardized method for the quantification of active and/ortotal lactic acid bacteria and probiotic strains in starter cultures used in dairy products by means offlow cytometry. The method is also applicable to probiotics used in dairy products and to fermentedmilk products such as yogurts containing primarily lactic acid bacteria.This International Standard does not apply to taxonomical differentiation of bacteria. Due to its nonspecificity,the method may quantify other bacteria than those within the scope of this InternationalStandard, when present in the sample. This may lead to overestimation of the counts.The minimum bacterial cell concentration in the sample before applying this standardized methoddepends on the dilution rates used in the individual protocols. Typically 106 cells per gram or ml areconsidered within the minimum range.
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