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α-淀粉酶(α-AL)检测试剂盒 (微量法)

TOPEK190792
RT/4℃
6个月
Catalog No. Specification List Price Preferential Price VIP Beijing Harbin Shenyang Guangzhou Quantity Cart
TOPEK190792 100T/48S $74.30
Product Name
Introduction:

正式测定前务必取2-3个预期差异较大的样本做预测定

测定意义:

淀粉酶主要负责催化淀粉水解,包含α-淀粉酶与β-淀粉酶两类。其中α-淀粉酶(EC3.2.1.1)可随机作用于淀粉分子中的α-1,4-糖苷键,水解生成葡萄糖、麦芽糖、麦芽三糖及糊精等还原糖,同时降低淀粉体系粘度,因此也被称作液化酶。

测定原理:

本试剂盒利用β-淀粉酶的热不稳定性,将粗酶液置于70℃条件下钝化15min,可特异性去除β-淀粉酶活性,使体系中仅保留耐高温α-淀粉酶的催化功能;α-淀粉酶催化淀粉水解生成的还原糖,可与3,5-二硝基水杨酸发生还原反应,生成具有特征吸收的棕红色产物,该产物在540nm波长下有明显吸收峰。通过测定540nm处吸光度的变化,即可计算出α-淀粉酶的活性。

These protocols are for reference only. Biotopped does not independently validate these methods.

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