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Merck

A7005

β-Amylase from sweet potato

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

Synonym(s):

1,4-α-D-Glucan maltohydrolase

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About This Item

CAS Number:
UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
232-566-1
MDL number:
EC Number:
Specific activity:
≥750 units/mg protein (E1%/280)
Biological source:
sweet potato
Concentration:
≥7.0 mg/mL
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biological source

sweet potato

Quality Segment

type

Type I-B

form

ammonium sulfate suspension

specific activity

≥750 units/mg protein (E1%/280)

greener alternative product score

old score: 57
new score: 1
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greener alternative product characteristics

Waste Prevention
Safer Solvents and Auxiliaries
Design for Energy Efficiency
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sustainability

Greener Alternative Product

concentration

≥7.0 mg/mL

greener alternative category

storage temp.

2-8°C

General description

β-Amylases belongs to the class of amylolytic enzymes.
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Application

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

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.

Biochem/physiol Actions

β-Amylases plays a major role in examining enzymatic promiscuity among glycosidases.
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.

Physical form

Crystalline suspension in 2.3 M (NH4)2SO4

Other Notes

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


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pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Resp. Sens. 1

Storage Class

11 - Combustible Solids

wgk

WGK 3



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