ISO 20128:2006 奶制品-选定培养基中的假定乳酸杆菌嗜酸菌的列示 37 °C下的菌群统计技术
标准编号：ISO 20128:2006
中文名称：奶制品-选定培养基中的假定乳酸杆菌嗜酸菌的列示 37 °C下的菌群统计技术
英文名称：Milk products — Enumeration of presumptive Lactobacillus acidophilus on a selective medium — Colony-count technique at 37 degrees C
发布日期：2006-05
标准范围
ISO 20128IDF 192:2006规定了一种通过在37℃下使用菌落计数技术在选择性培养基上计数乳制品中推定嗜酸乳杆菌的方法。该方法适用于假定存在嗜酸乳杆菌并与其他乳酸菌和双歧杆菌组合的发酵和非发酵乳、奶粉和婴儿配方奶粉。当推定嗜酸乳杆菌的数量低于104 CFU/g且鼠李糖乳杆菌、罗伊乳杆菌和副干酪乳杆菌亚种的数量低于104 CFU/g时，该方法不适用。副干酪大于106 CFU/g。
ISO 20128|IDF 192:2006 specifies a method for the enumeration of presumptive Lactobacillus acidophilus in milk products on a selective medium by using a colony-count technique at 37 °C.The method is applicable to fermented and non-fermented milks, milk powders and infant formulae where presumptive L. acidophilus is present and in combination with other lactic acid bacteria and bifidobacteria.The method is not applicable when the number of presumptive L. acidophilus is less than 104 CFU/g and the numbers of Lactobacillus rhamnosus, Lactobacillus reuteri and Lactobacillus paracasei subsp. paracasei are greater than 106 CFU/g.
标准预览图
