A7130
β-Amylase from barley
Type II-B, 20-80 units/mg protein (biuret)
Sinónimos:
1,4-α-D-Glucan maltohydrolase
Iniciar sesión para ver los precios por organización y contrato.
Seleccione un Tamaño
En este momento no podemos mostrarle ni los precios ni la disponibilidad
Acerca de este artículo
Número CAS:
UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
232-566-1
MDL number:
Specific activity:
20-80 units/mg protein (biuret)
Saltar a
Servicio técnico
¿Necesita ayuda? Nuestro equipo de científicos experimentados está aquí para ayudarle.
Permítanos ayudarletype
Type II-B
Quality Level
form
powder
specific activity
20-80 units/mg protein (biuret)
greener alternative product characteristics
Waste Prevention
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.
sustainability
Greener Alternative Product
greener alternative category
, Enabling
shipped in
wet ice
storage temp.
2-8°C
Categorías relacionadas
1 of 4
Este artículo | |||
|---|---|---|---|
| specific activity 20-80 units/mg protein (biuret) | specific activity ≥150 units/mg protein (biuret) | specific activity ~50 U/mg | specific activity 500-1,500 units/mg protein |
| form powder | form powder | form powder | form lyophilized powder |
| 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 200 | Quality Level 100 | Quality Level 200 |
| type Type II-B | type - | type - | type - |
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 [1]. β -Amylase, from barley, has been used to study how pressure and temperature affect catalytic activity [2].
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.[3]
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
signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
Elija entre una de las versiones más recientes:
¿Ya tiene este producto?
Encuentre la documentación para los productos que ha comprado recientemente en la Biblioteca 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)
Xin Li et al.
Journal of industrial microbiology & biotechnology, 38(11), 1837-1843 (2011-04-21)
A moderately halophilic strain LY9 with high amylolytic activity was isolated from soil sample obtained from Yuncheng, China. Biochemical and physiological characterization along with 16S rRNA sequence analysis placed the isolate in the genus Halobacillus. Amylase production started from the
Déborah LeCorre et al.
Biomacromolecules, 13(1), 132-137 (2011-12-03)
Starch nanocrystals (SNCs) are crystalline platelets resulting from the acid hydrolysis of starch. A limiting factor for their more widespread use is their preparation duration. Therefore, this study investigates the possibility of developing an enzymatic pretreatment of starch to reduce
Claudinéia Aparecida Soares et al.
Journal of agricultural and food chemistry, 59(12), 6672-6681 (2011-05-20)
Different banana cultivars were used to investigate the influences of starch granule structure and hydrolases on degradation. The highest degrees of starch degradation were observed in dessert bananas during ripening. Scanning electron microscopy images revealed smooth granule surface in the
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.
Contenido relacionado
Número de artículo de comercio global
| SKU | GTIN |
|---|---|
| A7130-250KU | 04061832841410 |
| A7130-50KU | 04061833383605 |
| A7130-10KU | 04061833383599 |
Filtros activos
Nuestro equipo de científicos tiene experiencia en todas las áreas de investigación: Ciencias de la vida, Ciencia de los materiales, Síntesis química, Cromatografía, Analítica y muchas otras.
Póngase en contacto con el Servicio técnico