测定供试品中蛋白质的含量,首先要将供试品进行消化,使蛋白质转化成氮,测定其氮的含量,然后再根据得到的氮量计算出供试品中蛋白质的含量。干酵母测定中国药典1953年版至1985年版一直沿用的氮测定法,即常量法,所需时间较长,一般约需7～8 h才能完成。且在消化过程中常会因崩(爆) To determine the content of the protein in the test sample, the test sample is first digested, the protein is converted into nitrogen, the nitrogen content is determined, and then the content of the protein in the test sample is calculated according to the obtained nitrogen amount. Dry yeast determination Chinese Pharmacopoeia 1953 edition to 1985 edition has been using nitrogen determination method, that is, the constant method, takes longer, usually takes about 7 ~ 8 h to complete. And in the digestion process often collapse (burst)