A7130
β-Amylase from barley
Type II-B, 20-80 units/mg protein (biuret)
Caratteristiche di sostenibilità
Sinonimo/i:
1,4-α-D-Glucan maltohydrolase
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Cambia visualizzazione
| Voi/SKU | Disponibilità | Prezzo |
|---|---|---|
10000 units | Per conoscere la disponibilità, visualizza il carrello | CHF 151.00 |
50000 units | Per conoscere la disponibilità, visualizza il carrello | CHF 420.00 |
250000 units | Per conoscere la disponibilità, visualizza il carrello | CHF 1470.00 |
Informazioni su questo articolo
Numero CAS:
UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
232-566-1
MDL number:
Numero CE:
Specific activity:
20-80 units/mg protein (biuret)
CHF 151.00
Per conoscere la disponibilità, visualizza il carrello
Servizio Tecnico
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Permettici di aiutartitype
Type II-B
Quality Segment
form
powder
specific activity
20-80 units/mg protein (biuret)
sustainability
Sustainability features
shipped in
wet ice
storage temp.
2-8°C
General description
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency and waste prevention when used in starch ethanol research. For more information see the article in biofiles.
Application
β -Amylase is used to hydrolyze α bonds of α-linked polysaccharides, such as starch and glycogen. β -Amylase, has been used in various plant studies, such as carbon starvation studies in Populus tremuloides . β -Amylase, from barley, has been used to study how pressure and temperature affect catalytic activity .
Biochem/physiol Actions
β-Amylase hydrolyzes the α-(1,4) glucan linkages in polysaccharides of three or more α-(1,4) linked D-glucose units. Natural substrates such as starch and glycogen are broken down into glucose and maltose. Pure, crystalline β-amylase preparation consists of four isoenzymes with different isoelectric points. The enzyme polymerizes very rapidly through the sulfhydryl groups in the absence of reducing agents. p-Chloromercuribenzoate inhibits the polymerization and the enzymatic activity. The reducing agents mercaptoethanol or dithiothreitol can completely restore the activity.
Analysis Note
Crude
Other Notes
One unit will liberate 1.0 mg of maltose from starch in 3 min at pH 4.8 at 20 °C.
View more information on enzymes for complex carbohydrate analysis at www.sigma-aldrich.com/enzymeexplorer
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Questo articolo | |||
|---|---|---|---|
| description Type II-B, 20-80 units/mg protein (biuret) | description - | description Type I-B, ammonium sulfate suspension, ≥750 units/mg protein (E1%/280) | description - |
| specific activity 20-80 units/mg protein (biuret) | specific activity - | specific activity ≥750 units/mg protein (E1%/280) | specific activity - |
| form powder | form powder | form ammonium sulfate suspension | form solid |
| shipped in wet ice | shipped in - | shipped in - | shipped in - |
| storage temp. 2-8°C | storage temp. −20°C | storage temp. 2-8°C | storage temp. 2-8°C |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
| type Type II-B | type - | type Type I-B | type - |
Parola di avvertenza
Danger
Codici di pericolo
Avvertenze di sicurezza
Hazard Classifications
Resp. Sens. 1
Classe di stoccaggio
11 - Combustible Solids
Che succede?
WGK 3
Punto di infiammabilità (°F)
Not applicable
Punto di infiammabilità (°C)
Not applicable
DPI (dispositivi di protezione individuale)
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
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