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MilliporeSigma

A7130

Sigma-Aldrich

β-Amylase from barley

greener alternative

Type II-B, 20-80 units/mg protein (biuret)

Sinónimos:

1,4-α-D-Glucan maltohydrolase

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10000 UNITS
$113.00
50000 UNITS
$458.00
250000 UNITS
$1,610.00

$113.00


Fecha estimada de envío02 de junio de 2025



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10000 UNITS
$113.00
50000 UNITS
$458.00
250000 UNITS
$1,610.00

About This Item

Número de CAS:
Comisión internacional de enzimas:
Número CE:
Número MDL:
Código UNSPSC:
12352204
NACRES:
NA.54

$113.00


Fecha estimada de envío02 de junio de 2025


tpo

Type II-B

Formulario

powder

actividad específica

20-80 units/mg protein (biuret)

características de los productos alternativos más sostenibles

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

sustainability

Greener Alternative Product

categoría alternativa más sostenible

Condiciones de envío

wet ice

temp. de almacenamiento

2-8°C

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Descripción general

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.

Aplicación

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 [1]. β -Amylase, from barley, has been used to study how pressure and temperature affect catalytic activity [2].

Acciones bioquímicas o 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. 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.[3]

Calidad

Crude

Definición de unidad

1 U setzt 1.0 mg Maltose aus Stärke in 3 Minuten frei bei pH 4.8 und 20 °C.

Pictogramas

Health hazard

Palabra de señalización

Danger

Frases de peligro

Consejos de prudencia

Clasificaciones de peligro

Resp. Sens. 1

Código de clase de almacenamiento

11 - Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

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


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Visite la Librería de documentos

Volker Heinz et al.
Biotechnology progress, 21(6), 1632-1638 (2005-12-03)
The depolymerization of starch by beta-amylase during exposure to hydrostatic pressure up to 700 MPa and within a temperature range from 20 to 70 degrees C has been investigated. Inactivation of the enzyme as well as alterations in conversion speed
Purification and characterisation of crystalline -amylase from barley.
K Visuri et al.
European journal of biochemistry, 28(4), 555-565 (1972-08-04)
Jun Li et al.
Molecular plant-microbe interactions : MPMI, 24(10), 1165-1178 (2011-06-09)
Microbial volatiles promote the accumulation of exceptionally high levels of starch in leaves. Time-course analyses of starch accumulation in Arabidopsis leaves exposed to fungal volatiles (FV) emitted by Alternaria alternata revealed that a microbial volatile-induced starch accumulation process (MIVOISAP) is
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
Ling-Wei Meng et al.
Food science and biotechnology, 29(4), 503-512 (2020-04-17)
The rice flours were hydrolyzed using α-amylase (A), α-amylase and xylanase (AX), and α-amylase, xylanase and β-amylase (AXB). The effects of different enzymatic rice flour hydrolysates (ERH) on the quality of the fermented rice cake (FRC) were determined at 25 °C

Protocolos

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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