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10065

Sigma-Aldrich

αα-Amilasa from Aspergillus oryzae

powder, ~30 U/mg

Sinónimos:

1,4-α-D-glucano glucanohidrolasa

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About This Item

Comisión internacional de enzimas:
3.2.1.1 (BRENDA, IUBMB)
EC Number:
232-588-1
MDL number:
MFCD00081319
UNSPSC Code:
12352204
eCl@ss:
32160410
NACRES:
NA.54

form

powder

Quality Level

100

specific activity

~30 U/mg

mol wt

Mr ~51000

storage temp.

2-8°C

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General description

Microbial amylases are exoenzymes and are used in several industrial applications, such as production of bread, maltose syrups, and fermentation of soya sauce, miso etc. α-Amylase isolated from Aspergillus oryzae has been found to have molecular weights of 51kDa (sedimentation and diffusion) and 49kDa (gel filtration).

Application

α-Amylase has been used:
  • as a control enzyme in agar plate-based and carboxymethylcellulose-based clearing assays to screen cellulase activity
  • for the hydrolysis of starch to explore the the role of wheat starch in frozen dough
  • to inhibit Staphylococcus aureus biofilms

Biochem/physiol Actions

Aspergillus oryzae α-amylase (Ao α-amylase) enzyme catalyzes the hydrolysis of the α-1,4 glycosidic bonds in soluble starches and related subsrates. These substrates are broken down to release short oligosaccharides and α-limit dextrins.

Unit Definition

1 U corresponds to the amount of enzyme which liberates 1 μmol maltose per minute at pH 6.0 and 25°C (starch acc. to Zulkowsky, Cat. No. 85642, as substrate).

Other Notes

Véase más información sobre enzimas para análisis de carbohidratos complejos en www.sigma-aldrich.com/enzymeexplorer
For the determination of fats in food; Application in (selective) hydrolysis/condensation of glycosidic bonds.

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Danger

hcodes

H302,H334

Hazard Classifications

Acute Tox. 4 Oral - Resp. Sens. 1

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

Certificados de análisis (COA)

Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»

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Han Tao et al.
Food chemistry, 265, 18-22 (2018-06-10)
Properties of starches isolated from soft and hard wheat dough after freezing/thawing (F/T) treatment were investigated. Significance of results was observed between isolated hard wheat starch (HWS) and soft wheat starch (SWS), but both cultivars showed an increase in the
Han Tao et al.
Food chemistry, 190, 588-593 (2015-07-28)
The wheat dough was subjected to freezing/thawing treatment for 0, 3, 7, and 10 cycles and fractionated into non-gluten proteins and starch. High-performance liquid chromatography revealed changes in molecular mass distribution occurred for the extracted non-gluten proteins. As for the
Takagi, T., et al.
The Enzymes, 5, 235- 271 (1971)
K. Fujita et al.
Bulletin of the Chemical Society of Japan, 62, 3150-3150 (1989)
C E Daugherty et al.
Journal - Association of Official Analytical Chemists, 66(4), 927-932 (1983-07-01)
A chloroform-methanol extraction method (complete extraction of fat in 3 min) for determining fat in processed and prepared foods has been studied collaboratively. Fourteen collaborators reported single replicate fat results on 7 samples representative of various food types and 2
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