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A7005

Sigma-Aldrich

β-Amylase from sweet potato

greener alternative

Type I-B, ammonium sulfate suspension, ≥750 units/mg protein (E1%/280)

Sinônimo(s):

1,4-α-D-Glucan maltohydrolase

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About This Item

Número CAS:
9000-91-3
Número da licença da enzima:
3.2.1.2 (BRENDA, IUBMB)
Número CE:
232-566-1
Número MDL:
MFCD00081391
Código UNSPSC:
12352204
NACRES:
NA.54

fonte biológica

sweet potato

Nível de qualidade

200

tipo

Type I-B

forma

ammonium sulfate suspension

atividade específica

≥750 units/mg protein (E1%/280)

pontuação do produto alternativo mais ecológico

old score: 57
new score: 1
Find out more about DOZN™ Scoring

características do produto alternativo mais ecológico

Waste Prevention
Safer Solvents and Auxiliaries
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

concentração

≥7.0 mg/mL

categoria alternativa mais ecológica

, Re-engineered

temperatura de armazenamento

2-8°C

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Categorias relacionadas

Descrição geral

β-Amylases belongs to the class of amylolytic enzymes.
We are committed to bringing you Greener Alternative Products, which adhere to one of the four categories of Greener Alternatives . This product belongs to category of Re-engineered products, showing key improvements in Green Chemistry Principles “Waste Prevention”, “Safer Solvents and Auxiliaries” and “Enhanced Energy Efficiency”. Click here to view its DOZN scorecard.
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.

Aplicação

β -Amylase is used to hydrolyze α bonds of α-linked polysaccharides, such as starch and glycogen. β -Amylase, from Sigma, has been used in various plant studies, such as carbon starvation studies in Populus tremuloides. β-amylase from sweet potato has been used to examine the utility of the enzyme in inhibiting and removing Staphylococcus aureus biofilms. The enzyme has also been used to prepare β-limit dextrin from waxy maize starch.
β-Amylase from sweet potato has been used:
  • in the hydrolysis of starch and starch-pectin combinations
  • for comparing amylases from different sources in Staphylococcus aureus SH1000 biofilm inhibition and reduction assay
  • for selenium speciation in samples

Ações bioquímicas/fisiológicas

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. β-amylase from sweet potato is a tetramer of identical subunits, which are arranged to exhibit 222 molecular symmetry.
β-Amylases plays a major role in examining enzymatic promiscuity among glycosidases.

Definição da unidade

One unit will liberate 1.0 mg of maltose from starch in 3 min at pH 4.8 at 20 °C.

forma física

Crystalline suspension in 2.3 M (NH4)2SO4

Outras notas

View more information on enzymes for complex carbohydrate analysis at www.sigma-aldrich.com/enzymeexplorer

Pictogramas

Health hazard
GHS08

Palavra indicadora

Danger

Frases de perigo

H334

Declarações de precaução

P261 - P342 + P311

Classificações de perigo

Resp. Sens. 1

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 3

Certificados de análise (COA)

Busque Certificados de análise (COA) digitando o Número do Lote do produto. Os números de lote e remessa podem ser encontrados no rótulo de um produto após a palavra “Lot” ou “Batch”.

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Effect of cross-linking on the resistance to enzymatic hydrolysis of waxy maize starch and low-methoxy pectin
Khondkar D, et al.
Food Hydrocolloids, 23(2), 387-393 (2009)
Xin Qi et al.
Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques, 14(1), 60-66 (2011-04-20)
β-Limit dextrin has been studied for many years as a means to investigate the internal structures of amylose and amylopectin. However its role as an excipient in the pharmaceutical industry has never been reported. This paper is the first one
Mechanisms of enzymatic glycosyl transfer
Comprehensive Natural Products II (2010)
Bradford Craigen et al.
The open microbiology journal, 5, 21-31 (2011-07-16)
Staphylococcus aureus, a versatile human pathogen, is commonly associated with medical device infections. Its capacity to establish and maintain these infections is thought to be related to its ability to form adherent biofilms. In this study, commercially available α-amylase compounds
William R L Anderegg et al.
Plant physiology, 159(4), 1866-1874 (2012-06-06)
Drought impacts on forests, including widespread die-off, are likely to increase with future climate change, although the physiological responses of trees to lethal drought are poorly understood. In particular, in situ examinations of carbon starvation and its interactions with and
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Artigos

How to Work with Enzymes Supplied as Ammonium Sulfate Suspensions

Instructions for working with enzymes supplied as ammonium sulfate suspensions

Protocolos

Enzymatic Assay of β-AMYLASE (EC 3.2.1.2)

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.

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