標準號：BS 5766-19-2000
中文標準名稱：動物飼料的分析方法.淀粉含量的測定.旋光測定法
英文標準名稱：Methods for analysis of animal feeding stuffs. Determination of starch content. Polarimetric method
標準類型：B46
發(fā)布日期：2000/4/15 12:00:00
實施日期：2000/4/15 12:00:00
中國標準分類號：B46
國際標準分類號：65.120
適用范圍：This International Standard specifies a method for the polarimetric determination of the starch content of animal feeding stuffs and raw materials for animal feeding stuffs. The method is not applicable to products which, besides starch, contain other substances which are optically active during the analysis and do not dissolve in 40 % ethanol. Examples of these products are potato pulp, beet chips, beet leaves, beet tops, yeast, soya products, lupine and products rich in inulin (e.g. chicory roots and Jerusalem artichokes). In these cases an enzymatic determination of the starch content may be used. This method is not applicable for the quantification of starch with an amylose content exceeding 40 % (e.g. high amylose maize starch like Hylon VII). CAUTION —Depending on the intensity of the heat/moisture treatment the product has been subjected to, too low a starch content may be determined.