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β-Galactosidase

β-Galactosidase
β-Galactosidase structure
CAS No.
9031-11-2
Chemical Name:
β-Galactosidase
Synonyms
s2107;sl396;LACTASE;oryzatym;maxilact;lactozym;sumiklat;hydrolact;tilactase;LACTASE F
CBNumber:
CB6123518
Molecular Formula:
NULL
Formula Weight:
0
MOL File:
Mol file

β-Galactosidase Properties

Melting point:
100 °C
Boiling point:
100 °C(Press: 800 Torr)
Density 
1.14 g/cm3(Temp: 4 °C)
storage temp. 
-20°C
solubility 
1% acetic acid: 1 mg/mL
form 
powder
color 
slightly yellow
Water Solubility 
Soluble in water
NCI Dictionary of Cancer Terms
lactase
EPA Substance Registry System
Galactosidase, .beta.- (9031-11-2)
SAFETY
  • Risk and Safety Statements
Hazard Codes  Xn
Risk Statements  22
Safety Statements  24/25
WGK Germany  3
RTECS  LW5840000
3-10
HS Code  35079090

β-Galactosidase price More Price(60)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich G5160 β-Galactosidase from Aspergillus oryzae ≥8.0?units/mg solid 9031-11-2 25000 units $71 2021-03-22 Buy
Sigma-Aldrich G6008 β-Galactosidase from Escherichia coli Grade VI, lyophilized powder, ≥250?units/mg protein 9031-11-2 1000 units $80.6 2021-03-22 Buy
Sigma-Aldrich G5635 β-Galactosidase from Escherichia coli Grade VIII, lyophilized powder, ≥500?units/mg protein 9031-11-2 1000 units $92 2021-03-22 Buy
Sigma-Aldrich G4142 β-Galactosidase from bovine testes ammonium sulfate suspension, 1.0-3.0?units/mg protein (modified Warburg-Christian) 9031-11-2 0.2 unit $183 2021-03-22 Buy
Sigma-Aldrich 345788 β-Galactosidase, 9031-11-2 5mg $191.47 2021-03-22 Buy

β-Galactosidase Chemical Properties,Uses,Production

Chemical Properties

White to tan powder

Uses

β-Galactosidase from bovine testes was used for coupling to Sepharose.

Uses

β-Galactosidase is conjugated to an antibody which specifically recognizes a target molecule (enzyme immunoassay or EIA). 1 β-Galactosidase is also used as a reporter enzyme to monitor the level of gene expression of a promoter. 2 It may be used as a positive control protein with anti-β-galactosidase antibodies.

Uses

β-Galactosidase is used in the enzymatic assays in the synthesis of imidazolo-pyrrolidinoses.

Uses

β-Galactosidase may be used for derivatization, such as an enzyme label for IgG, without prior dialysis or gel filtration.

Uses

β-Galactosidase was used for reversed-phase (RP) adsorption. 1 It was also used in the hydrolysis of whey lactose.

Uses

β-galactosidase was used in the production of a stabilized, single reagent for alcohol analysis.

brand name

Replagal (Transkaryotic Therapies).

Biotechnological Production

b-D-Galactosidase (b-D-galactoside galactohydrolase, EC 3.2.1.23) hydrolyses the glycosidic bond of the disaccharide lactose into its monomers glucose and galactose. Therefore, b-D-galactosidase is also known as lactase. b-D-Galactosidases can be found throughout nature. Commercial enzymes are mainly of fungal origin of the genera Kluyveromyces (yeast) and Aspergillus (filamentous ascomycete). Although several b-D-galactosidases are available on the market, new efforts are still conducted to improve the enzymatic properties by site-directed mutagenesis or to find new b-D-galactosidase genes by screening metagenome databases.
From a technological point of view, the milk sugar lactose is hydrolyzed because of the resulting increase of sweetness and the reduced susceptibility to crystallization during spray drying of milk and whey. Nevertheless, the most apparent application is the production of ‘‘lactose-free’’ milk products, which enables the consumption of dairy products by lactose-intolerant people.
For industrial processes, b-D-galactosidases can be applied by immobilization of the enzyme on carriers, such as cellulose, alginate, or other polymers, for hydrolysis of milk or whey products. Conversion rates of lactose in batch and continuous operation mode by immobilized b-D-galactosidase might reach 95 %. To reach even lower lactose concentrations of less than 0.01 %, a combination of b-D-galactosidase activity and ultrafiltration as well as nanofiltration methods can be used. Besides the degradation of substances that lead to food intolerances, the elimination of food allergens by means of a specific degradation of allergenic epitopes is another promising application of enzymes.

Purification Methods

It is purified 600-fold by (NH4)2SO4 precipitation, acetone fractionation and affinity chromatography on agarose substituted with terminal thio-.-galactopyranosyl residues. [Distlern & Jourdian J Biol Chem 248 6772 1973.]

β-Galactosidase Preparation Products And Raw materials

Raw materials

Preparation Products


β-Galactosidase Suppliers

Global( 164)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 29959 58
Xi'an Kono chem co., Ltd.,
13289246953 029-86107037
info@konochemical.com CHINA 3000 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 linda@hubeijusheng.com CHINA 23035 58
Chongqing Chemdad Co., Ltd
+86-13650506873
sales@chemdad.com CHINA 37282 58
Zhengzhou Alfa Chemical Co.,Ltd
+86 13343822234
sales5@alfachem.cn;sales9@alfachem.cn;sale1@alfachem.cn;sales7@alfachem.cn CHINA 12023 58
SIMAGCHEM CORP
13806087780 +86 13806087780
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Creative Enzymes
1-631-619-7922
1-631-938-8127 info@creative-enzymes.com United States 8748 58
Hubei Ipure Biology Co., Ltd
+8618062405514
18062427325 ada@ipurechemical.com;ada@ipurechemical.com China 6031 58
HONG KONG IPURE BIOLOGY CO.,LIMITED
18062405514 86 18062405514
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Hebei Lingding Biological Technology Co., Ltd
19933155420
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View Lastest Price from β-Galactosidase manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-10-20 lactase enzyme
9031-11-2
US $300.00 / KG 1KG 99% 9000kg/per week Hebei Lingding Biological Technology Co., Ltd
2021-09-29 β-Galactosidase
9031-11-2
US $0.00 / Kg/Drum 1KG ≥5000ALU/g food grade 1000kgs WUHAN FORTUNA CHEMICAL CO., LTD
2019-07-06 BETA1,4-GALACTOSIDASE
9031-11-2
US $1000.00 / KG 25KG 98% 10tons career henan chemical co

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