BS ISO 19344:2015规定了一种标准化的活性和/或活性物质定量方法 乳制品用发酵剂培养物中的乳酸菌和益生菌菌株总数 流式细胞术。该方法也适用于乳制品中使用的益生菌和发酵食品 主要含有乳酸菌的乳制品，如酸奶。本国际标准不适用于细菌的分类分化。由于其非特异性， 该方法可以量化本国际标准范围以外的其他细菌 标准，当存在于样品中时。这可能会导致高估计数。使用此标准化方法前样品中的最小细菌细胞浓度 取决于各个方案中使用的稀释率。通常每克或每毫升有106个细胞 在最小范围内考虑。交叉引用:ISO 6887-1:1999ISO 6887-5:2010ISO 7218ISO 7889IDF 117ISO 15214ISO 707IDF 50ISO 26323IDF 213ISO 5725-1ISO 5725-2ISO 27205IDF 149购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS ISO 19344:2015 specifies a standardized method for the quantification of active and/or total lactic acid bacteria and probiotic strains in starter cultures used in dairy products by means of flow cytometry. The method is also applicable to probiotics used in dairy products and to fermented milk 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 International Standard, 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 method depends on the dilution rates used in the individual protocols. Typically 106 cells per gram or ml are considered within the minimum range.Cross References:ISO 6887-1:1999ISO 6887-5:2010ISO 7218ISO 7889IDF 117ISO 15214ISO 707IDF 50ISO 26323IDF 213ISO 5725-1ISO 5725-2ISO 27205IDF 149All current amendments available at time of purchase are included with the purchase of this document.