A7130
β-淀粉酶 来源于大麦
Type II-B, 20-80 units/mg protein (biuret)
别名:
1,4-α-D-葡聚糖麦芽糖水解酶
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关于此项目
化学文摘社编号:
UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
232-566-1
MDL number:
Specific activity:
20-80 units/mg protein (biuret)
type
Type II-B
Quality Level
form
powder
specific activity
20-80 units/mg protein (biuret)
greener alternative product characteristics
Waste Prevention
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
greener alternative category
, Enabling
shipped in
wet ice
storage temp.
2-8°C
General description
我们致力于为您带来更加绿色的替代产品，这些产品遵守一项或多项绿色化学12项原则。该产品经过改进，可在用于淀粉乙醇研究时提高能效和防止浪费。有关详细信息，请参阅 《Biofiles》的文章。
Application
β-淀粉酶用于水解 α-连接的多糖（例如淀粉和糖原）的 α 键。β-淀粉酶已经用于各种植物研究，例如山杨的碳饥饿研究。来自大麦的 β-淀粉酶已用于研究压力和温度是如何影响催化活性的。
Biochem/physiol Actions
β-淀粉酶水解三个或更多个 α-（1,4）连接的 D-葡萄糖单元的多糖中的 α-（1,4）葡聚糖键。淀粉和糖原等天然底物被分解成葡萄糖和麦芽糖。纯的结晶 β-淀粉酶制剂由具有不同等电点的四种同工酶组成。在不存在还原剂的情况下，酶通过巯基非常快速地聚合。对氯甲基苯甲酸酯抑制该聚合和该酶活性。还原剂巯基乙醇或二硫苏糖醇可以完全恢复该活性。
Analysis Note
粗品
Other Notes
在 pH 4.8，温度 20 °C 条件下，一个单位可在 3 分钟内从淀粉中释放出 1.0 mg 麦芽糖。
signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
法规信息
低风险生物材料
此项目有
实验方案
Beta-amylase is found in bacteria, fungi, and plants. To measure β-amylase activity, this assay uses a colorimetric spectrophotometric stop reaction at 540 nm.
β-淀粉酶存在于细菌、真菌和植物中。在测定β-淀粉酶活性时，该测定使用了一种在540nm处的比色分光光度终点反应法进行测定。
相关内容
QC Methods
Volker Heinz et al.
Biotechnology progress, 21(6), 1632-1638 (2005-12-03)
The depolymerization of starch by beta-amylase during exposure to hydrostatic pressure up to 700 MPa and within a temperature range from 20 to 70 degrees C has been investigated. Inactivation of the enzyme as well as alterations in conversion speed
Purification and characterisation of crystalline -amylase from barley.
K Visuri et al.
European journal of biochemistry, 28(4), 555-565 (1972-08-04)
Jun Li et al.
Molecular plant-microbe interactions : MPMI, 24(10), 1165-1178 (2011-06-09)
Microbial volatiles promote the accumulation of exceptionally high levels of starch in leaves. Time-course analyses of starch accumulation in Arabidopsis leaves exposed to fungal volatiles (FV) emitted by Alternaria alternata revealed that a microbial volatile-induced starch accumulation process (MIVOISAP) is
全球贸易项目编号
| 货号 | GTIN |
|---|---|
| A7130-250KU | 04061832841410 |
| A7130-50KU | 04061833383605 |
| A7130-10KU | 04061833383599 |