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通过研究Lactobacillus delbrueckii QS306在10%的还原脱脂牛乳中的生长特性,探讨培养基中添加核酸关联物质时对蛋白质水解能力及其水解产物对血管紧张素转化酶(ACE)抑制活性的影响。结果表明,菌株QS306在10%的还原脱脂牛乳中生长缓慢,产酸量和生物量逐渐上升,在37℃培养第4 d时,滴定酸度和生物量分别达到68.24(°T)和6.91(OD410 nm×10),蛋白质...
Comparison of Newly Isolated Strains of Lactobacillus delbrueckii subsp. lactis for Hydrogen Peroxide Production at 5°C
Lactobacillus hydrogen peroxide
2008/4/1
Isolates of Lactobacillus delbrueckii subsp. lactis obtained from raw milk samples were compared for the ability to produce hydrogen peroxide (H2O2)at 5°C. Nineteen out of 101 lactobacilli isolated we...
Application of Polyacrylamide Gel Electrophoresis and Capillary Gel Electrophoresis to the Analysis of Lactobacillus delbrueckii Whole-Cell Proteins
Lactobacillus delbrueckii whole-cell proteins capillary gel electrophoresis polyacrylamide gel electrophoresis
2008/3/28
Whole-cell protein profiles of different strains of Lactobacillus delbrueckii isolated from dairy products were studied by capillary gel electrophoresis and PAGE. The high similarity among Lactobacill...
A Novel Method for the Detection of Protease and the Development of Extracellular Protease in Early Growth Stages of Lactobacillus delbrueckii ssp. bulgaricus
extracellular protease Lactobacillus delbrueckii ssp. bulgaricus lactic acid bacteria microplate
2008/3/28
A novel method of rapid detection using microplate wells with casein and calcium ions was developed for measuring protease activity. This new method is based on the theory that the hydrolysis by the p...
Isolation and Characterization of a New Lactobacillus delbrueckii ssp. bulgaricus Temperate Bacteriophage
lacbacillus bacteriophage
2008/3/28
Lactobacillus delbrueckii ssp. bulgaricus strain CRL 539 was shown to be lysogenic and inducible with mitomycin C. The conditions were determined for an optimal induction of temperate bacteriophage lb...
Evaluation of Media for Selective Enumeration of Streptococcus thermophilus, Lactobacillus delbrueckii ssp. bulgaricus, Lactobacillus acidophilus, and Bifidobacteria
enumeration Streptococcus thermophilus Lactobacillus spp., bifidobacteria
2008/3/26
Fifteen media were evaluated to determine their suitability for selective enumeration of Streptococcus thermophilus, Lactobacillus delbrueckii ssp. bulgaricus, Lactobacillus acidophilus, and bifidobac...
Hydrogen Peroxide Production and Oxidation of Ferrous Iron by Lactobacillus delbrueckii ssp. bulgaricus
iron hydrogen peroxide Lactobacillus delbrueckii ssp. bulgaricus
2008/3/25
Hydrogen peroxide was produced by Lactobacillus delbrueckii ssp. bulgaricus ATCC 11842 only in the presence of glucose at pH 6.5 and 5.0 in the presence of air. Production of H2O2 was minimal followin...
Exopolysaccharide Production in Milk by Lactobacillus delbrueckii ssp. bulgaricus CNRZ 1187 and by Two Colonial Variants
exopolysaccharide Lactobacillus delbrueckii ssp. bulgaricus
2008/3/25
A ropy strain of Lactobacillus delbrueckii ssp. bulgaricus (CNRZ 1187) and two stable colonial variants produced different yields of neutral heteropolysaccharides when grown in milk. The variants were...
Survival of Lactobacillus delbrueckii ssp. bulgaricus Following Spray-Drying
Lactobacillus delbrueckii ssp. bulgaricus spray-drying cellular damage
2008/3/22
Survival of cell concentrates of Lactobacillus delbrueckii ssp. bulgaricus following spray-drying in skim milk with and without ascorbic acid and monosodium glutamate was evaluated during storage at d...
A Comparative Study: Aminopeptidase Activities from Lactobacillus delbrueckii ssp. bulgaricus and Streptococcus thermophilus
aminopeptidase Lactobacillus delbrueckii ssp. bulgaricus Streptococcus thennophilus
2008/3/18
Aminopeptidases from Lactobacillus delbrueckii ssp. bulgaricus and Streptococcus thermophilus were isolated. Enzymes were purified by chromatography on DEAE-cellulose and Sephadex G-150. The enzymes h...
An Index of Proteolysis Degree in Ewes' Milk and Ewes' Milk Yoghurt, by Single Strains and Combinations of Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus, Isolated from Traditional Greek Yoghurt
yoghurt Str thermophilus Lb. bulgaricus ninhydrin
2010/11/23
The proteolysis degree in ewes' milk by 5 Streptococcus thermophilus and 4 Lactobacillus delbrueckii subsp. bulgaricus strains, as well as by their 20 combinations in ewes' milk yoghurt, was determine...