This invention relates to a method for quantitatively determining components, which comprises converting NAD(P)H existing in a sample or being produced from components other than the intended component by a reaction to NA(D)P with oxidized type glutathione and glutathione reductase, decomposing remaining oxidized type glutathione by the action of γ-glutamyltranspeptidase in the presence or absence of a mercapto compound, and determining the intended component by utilizing the reaction of producing NAD(P)H. This method enables the amylase activity or the like of a component of a living body containing maltose or glucose to be determined accurately.
本发明涉及一种定量测定组分的方法,该方法包括用氧化型
谷胱甘肽和
谷胱甘肽还原酶将样品中存在的或由目标组分以外的组分反应生成的
NAD(P)H转化为NA(D)P,在巯基化合物存在或不存在的情况下,通过γ-谷
氨酰转肽酶的作用分解剩余的氧化型
谷胱甘肽,并利用生成
NAD(P)H的反应测定目标组分。这种方法可以准确地测定含有
麦芽糖或
葡萄糖的活体成分的
淀粉酶活性或类似物。