ISO 11050:1993 小麦粉和硬粒麦麸.来自性畜杂质的测定

标准编号：ISO 11050:1993

中文名称：小麦粉和硬粒麦麸.来自性畜杂质的测定

英文名称：Wheat flour and durum wheat semolina — Determination of impurities of animal origin

发布日期：1993-07

标准范围

所述方法的原理是用沸点下的盐酸溶液水解试样，在水/碳氢化合物界面处浓缩不溶性颗粒，通过滤纸或滤膜过滤分离，显微镜检查，并在反射光下计数，动物源性杂质（即昆虫发育的各个阶段、昆虫碎片、螨虫及其碎片、啮齿动物毛发及其碎片）。适用于含或不含添加剂且灰分产率不超过0.63%（m/m）的小麦粉和硬粒小麦粗粉。

The principle of the method described is hydrolysis of a test portion with a solution of hydrochloric acid at boiling point, concentration of the insoluble particles at a water/hydrocarbon interface, separation by filtration on a filter paper or membrane, microscopic examination, and counting under reflected light, of the impurities of animal origin (i.e. insects at all stages of their development, insect fragments, mites and their fragments, and rodent hairs and their fragments). Applies to wheat flours, with or without additives and having an ash yield not exceeding 0,63 % (m/m), and durum wheat semolinas.

标准预览图