动物饲料.淀粉总含量的酶催化测定

[中文适用范围]： 本标准规定了动物饲料及动物饲料原料中总淀粉含量的酶法测定方法。 该方法也适用于淀粉纯度的测定。 重要的是，样品基质中不存在影响 340 nm 处测量消光的成分。 该方法的分析范围为40 g/kg～1 000 g/kg淀粉。 标准程序适用于 200 g/kg 至 1000 g/kg 范围。 对于较低范围（40 g/kg 至 200 g/kg），可以使用标准葡萄糖溶液和样品的另一种稀释程序。 [外文原描述]： ISO 15914:2004 specifies a method for the enzymatic determination of the total starch content of animal feeding stuffs and raw materials for animal feeding stuffs. The method is also applicable to the determination of starch in starch. It is important that in the sample matrix no components are present which contribute to the measured extinction at 340 nm. The analytical range of the method is 40 g/kg to 1 000 g/kg starch. The standard procedure is applicable to the range 200 g/kg to 1000 g/kg. For the lower range, 40 g/kg to 200 g/kg, another dilution procedure for the standard glucose solution and samples can be used.