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A9857

Sigma-Aldrich

α-淀粉酶 来源于米曲霉

greener alternative

≥150 units/mg protein (biuret)

同義詞:

1,4-α-D-葡聚糖-葡萄糖水解酶

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About This Item

酶委員會編號:
3.2.1.1 (BRENDA, IUBMB)
EC號碼:
232-588-1
MDL號碼:
MFCD00081319
分類程式碼代碼:
12352204
eCl@ss:
32160410
NACRES:
NA.54
暫時無法取得訂價和供貨情況

形狀

powder

品質等級

200

比活性

≥150 units/mg protein (biuret)

環保替代產品特色

Waste Prevention
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

環保替代類別

Enabling,

儲存溫度

−20°C

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相關類別

一般說明

我们致力于为您提供更环保的替代产品，以符合“绿色化学的12项原则”的一项或多项原则要求。当用于淀粉乙醇研究时，该产品经优化可提高能效和防止浪费。有关详细信息，请参阅《Biofiles》的文章。

應用

α-淀粉酶用于水解α-连接多糖的α键，如淀粉和糖原。 α-淀粉酶已被用于各种植物研究，如 拟南芥 的代谢研究 [1]。 来自 米曲霉 的淀粉酶常被用作烘焙添加剂，以防止烘焙工业中的老化、净化果汁和酒精饮料的混浊物以及生产葡萄糖和麦芽糖糖浆产品 [2]。

生化／生理作用

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。 淀粉和糖原等天然底物被分解成葡萄糖和麦芽糖。 国际免疫学会联合会（IUIS）将来自 米曲霉 （Asp o II）的α-淀粉酶归类为可引起呼吸道症状的职业过敏原 [2]。

品質

粗品

單位定義

在pH 6.9、温度20 °C条件下，一个单位可在3分钟内从淀粉中释放出1.0mg麦芽糖。

外觀

粉末

其他說明

有关复合碳水化合物分析酶的更多信息，请见www.sigma-aldrich.com/enzymeexplorer

象形圖

Health hazardExclamation mark
GHS08,GHS07

訊號詞

Danger

危險聲明

H302,H334

危險分類

Acute Tox. 4 Oral - Resp. Sens. 1

儲存類別代碼

11 - Combustible Solids

水污染物質分類（WGK）

WGK 3

閃點（°F）

Not applicable

閃點（°C）

Not applicable

個人防護裝備

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

從最近期的版本中選擇一個：

分析證明 (COA)

Lot/Batch Number
0000405206
0000396724
0000396725
0000396726
0000387746

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存取文件庫

X Baur et al.
Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology, 24(5), 465-470 (1994-05-01)
The commercially available alpha-amylase from Aspergillus oryzae which is widely used as a baking additive was compared with a highly purified enzyme preparation. We used enzyme allergosorbent test (EAST), EAST inhibition, sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), isoelectric focussing, immunoblotting
Marit Navis et al.
Nutrients, 12(11) (2020-11-08)
Human milk is the optimal diet for infant development, but infant milk formula (IMF) must be available as an alternative. To develop high-quality IMF, bovine milk processing is required to ensure microbial safety and to obtain a protein composition that
Sean McClure
Journal of AOAC International, 103(4), 1060-1072 (2020-11-27)
A multi-laboratory study was completed for AOAC First Action Method 2015.14. Ten laboratories from eight countries participated. Each laboratory analyzed (in duplicate) a placebo and 14 fortified nutritionals. Product matrices analyzed included milk, soy, partially hydrolyzed milk, partially hydrolyzed soy
Jesus Valcarcel et al.
Polymers, 14(1) (2022-01-12)
Styela clava is an edible sea squirt farmed in Korea that has gradually invaded other seas, negatively impacting the ecology and economy of coastal areas. Extracts from S. clava have shown wide bioactivities, and ascidians have the unique capability among
Fengyuan Liu et al.
Food & function, 13(6), 3220-3233 (2022-02-26)
Both the liberation and stability of endogenous folate are relevant to the bioaccessibility of folate. Since folates are unstable, in addition to studying the natural folate content in foods, bioaccessibility should be considered. To understand folate changes during digestion, a
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α-澱粉酶（EC 3.2.1.1）的酵素分析

按照我們的程序來測定 alpha-Amylase 活性。此 a-Amylase 鹼性淀粉酶測法可引導您完成整個過程和必要的計算。

Enzymatic Assay of α-Amylase (EC 3.2.1.1)

Follow our procedure for the determination of alpha-Amylase activity. This enzymatic assay of a-Amylase guides you through the entire process and necessary calculations.

Questions

  1. Please specify quantity for 250KU product no A9857

    1 answer

    1. This product is sold by activity. The minimum activity specification for this material is 150 units per milligram. The weight of this product can be determined using the activity value reported on the lot-specific Certificate of Analysis(COA). For example, the sample COA has an activity value of 280 units/mg. The amount of powder in the 250,000-unit package will be 892.85mg.

      Please navigate to the ‘DOCUMENTATION’ section of the Product Detail Page to access a sample or lot-specific Certificate:
      https://www.sigmaaldrich.com/product/sigma/a9857#product-documentation

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