α-淀粉酶 来源于芽孢杆菌 属

A755160-1MU

1MU

powder,≥400 units/mg protein (Lowry)

α-淀粉酶可用于水解 α-连接的多糖（例如淀粉和糖原）α连接键。αSigma的-淀粉酶已被用于各种植物研究，如 拟南芥 的代谢研究 。α-也已用于研究玉米和淀粉保护酶活性的能力。该酶已用于比较细菌和真菌中α-淀粉酶和糊化面粉对面包的品质和保质期的影响。它还已被用于确定这些成分的最佳含量，以实现最大的体积和面包的新鲜度。此外，它已被用来消化韩国糯米糕中的羟丙基淀粉，以延缓其回生。 α-Amylase is used to hydrolyze α bonds of α-linked polysaccharides, such as starch and glycogen. α-Amylase, from Sigma, has been used in various plant studies, such as metabolism studies in Arabidopsis . α-has also been also used to study the ability of corn and starch to protect enzyme activity. The enzyme has been used to compare the effects of bacterial and fungal α-amylase and scalded flour on bread quality and shelflife. It has also been used to determine the optimal levels of these components in order to achieve maximum volume and bread freshness. Furthermore, it has been used to digest hydroxypropylated starch in Korean waxy rice cake to retard retrogradation.

α-淀粉酶可水解由三个或多个α-(1,4)连接D-葡萄糖单元组成的多糖的α-(1,4)葡聚糖键。天然底物（如淀粉和糖原）可被分解成葡萄糖和麦芽糖。 α -淀粉酶，分离自 枯草芽孢杆菌，是二聚体，单体分子量为48.9 kDa。α-淀粉酶是一种金属蛋白，含有至少一摩尔的钙离子。钙离子的存在增加了该酶对热、酸或尿素变性的稳定性。该产品活性的pH范围是5.0至7.5，最佳pH范围是6.0-7.0。该产品在pH 5.0至10.0范围内保持稳定。最佳温度范围为65-75°C。有效温度范围高达90°C。

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