Proteolytic Activity of Lactobacillus bulgaricus Grown in Milk
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چکیده
منابع مشابه
Influence of Bile on B-galactosidase Activity of Lactobacillus Bulgaricus
In the presence of 0.15% oxgall, the B-galactosidase activity of whole cells of Lactobacillus bulgaricus was increased. However, higher concentrations of oxgall decreased the enzyme activity. In the absence of oxgall, little or no B-galactosidase was exhibited by the whole cells. When the cells were lysed to obtain cell-free extracts prior to assay, there was some decrease in activity of the en...
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We examined 62 strains and 21 trade starter cultures from the collection of LB Bulgaricum PLC for proteolytic and antimicrobial activity of lactic acid bacteria (LAB) grown in goat milk. The aim of this study was to investigate the fermentation of caseins, α-lactalbumin and β-lactoglobulin by LAB, using the o-phthaldialdehyde (OPA) spectrophotometric assay and sodium dodecyl sulphate polyacryla...
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Low-moisture part-skim Mozzarella cheeses were manufactured from 2% fat milk and aged for 21 d. Treatments included cheeses made with one of three different strains of Lactobacillus delbrueckii ssp. bulgaricus in combination with a single strain of Streptococcus thermophilus. A fourth, control treatment consisted of cheeses made with only S. thermophilus. Although total proteolytic ability of t...
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The optimal fermentation temperature, pH, and Bacto-casitone (Difco Laboratories, Detroit, Mich.) concentration for production of exopolysaccharide by Lactobacillus delbrueckii subsp. bulgaricus RR in a semidefined medium were determined by using response surface methods. The design consisted of 20 experiments, 15 unique combinations, and five replications. All fermentations were conducted in a...
متن کاملOptimization of Cultural Conditions for Lactic Acid Production by Lactobacillus Bulgaricus Attc 11842 Grown on Whey
The effects on the lactic acid (LA) production by thermophile Lactobacillus bulgaricus ATTC 11842 on whey as a basal medium of seven factors namely, temperature °C, pH, Lactose g/l, Yeast extract g/l, corn steep liquor (CSL) g/l, K2HPO4 g/l, and salts g/l (MnSO4, MgSO4 and FeSO4) were investigated, through the statistical analysis of the results by Plackett and Burmann experimental design. pH w...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1993
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(93)77481-0