Intestinal β-galactosidases
نویسندگان
چکیده
منابع مشابه
Lactose Hydrolysis in Milk and Dairy Whey Using Microbial β-Galactosidases
This work aimed at evaluating the influence of enzyme concentration, temperature, and reaction time in the lactose hydrolysis process in milk, cheese whey, and whey permeate, using two commercial β-galactosidases of microbial origins. We used Aspergillus oryzae (at temperatures of 10 and 55°C) and Kluyveromyces lactis (at temperatures of 10 and 37°C) β-galactosidases, both in 3, 6, and 9 U/mL c...
متن کاملTransferase Activity of Lactobacillal and Bifidobacterial β-Galactosidases with Various Sugars as Galactosyl Acceptors
The β-galactosidases from Lactobacillus reuteri L103 (Lreuβgal), Lactobacillus delbrueckii subsp. bulgaricus DSM 20081 (Lbulβgal), and Bifidobacterium breve DSM 20281 (Bbreβgal-I and Bbreβgal-II) were investigated in detail with respect to their propensity to transfer galactosyl moieties onto lactose, its hydrolysis products D-glucose and D-galactose, and certain sugar acceptors such as N-acety...
متن کاملPurifi cation and characterization of two phospho-β-galactosidases, LacG1 and LacG2, from Lactobacillus gasseri ATCC33323
Probiotics improve the intestinal microbiota and exert benefi ts for the host (Fuller, 1989; Parvez et al., 2006). Some strains of lactobacilli utilize lactose and alleviate lactose intolerance (Montalto et al., 2006). Lactobacillus gasseri is one of the predominant lactobacilli in the human intestine, and strains are used in probiotic foods. Lactobacillus gasseri is the major homofermentative ...
متن کاملDetailed kinetic model describing new oligosaccharides synthesis using different β-galactosidases.
The production of prebiotic galactooligosaccharides (GOS) from lactose has been widely studied whereas the synthesis of new prebiotic oligosaccharides with improved properties as those derived from lactulose is receiving an increasing interest. Understanding the mechanism of enzymatic oligosaccharides synthesis from lactulose would help to improve the quality of the products in a rational way a...
متن کاملGalacto configured N-aminoaziridines: a new type of irreversible inhibitor of β-galactosidases.
A new type of galactose mimetics has been synthesized following a straightforward synthetic approach based on cyclohexene olefin aziridination reactions directed by hydroxyl substituents. These enantiomerically pure galacto-configured N-aminoaziridines are potent irreversible inhibitors of Aspergillus oryzae and Escherichia coliβ-galactosidases.
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ژورنال
عنوان ژورنال: Journal of Clinical Investigation
سال: 1969
ISSN: 0021-9738
DOI: 10.1172/jci106029