Animal feeding stuffs — Determination of tryptophan content
动物饲料.色氨酸含量的测定
发布日期:
2016-02-11
ISO 13904:2016规定了一种测定饲料(如完整和补充饲料、补充饲料、原材料、配料和浓缩物)中总色氨酸和游离色氨酸(Trp)含量的方法,以及测定含有2%以上色氨酸的商业纯物质和预混料中的游离色氨酸的方法。
它不区分D型和L型。
ISO 13904:2016 specifies a method for determination of the total and free tryptophan (Trp) content in feeding stuffs (e.g. complete and complementary feeds, supplementary feeds, raw materials, ingredients, and concentrates) and determination of free tryptophan in commercial pure substances and premixtures containing more than 2 % of tryptophan.
It does not distinguish between D- and L-forms.