Lead (Pb) is a toxic contaminating heavy metal that can cause a variety of hazardous effects to both humans and animals. In the present study, Lactobacillus delbrueckii subsp. bulgaricus KLDS1.0207 (L. bulgaricus KLDS1.0207), which has a remarkable Pb binding capacity and Pb tolerance, was selected for further study. It was observed that the thermodynamic and kinetic model of L. bulgaricus KLDS...

In yogurt, the formation of formate by Streptococcus thermophilus stimulates the activity of Lactobacillus delbrueckii subsp. bulgaricus (L. bulgaricus). However, there have been no reports how formic acid acts on the exopolysaccharide (EPS) production of L. bulgaricus. Here, the effect of formate on the EPS production in skim milk by L. bulgaricus OLL1073R-1 was investigated. After incubation ...

Mixed populations of Saccharomyces cerevisiae yeasts and lactic acid bacteria occur in many dairy, food, and beverage fermentations, but knowledge about their interactions is incomplete. In the present study, interactions between Saccharomyces cerevisiae and Lactobacillus delbrueckii subsp. bulgaricus, two microorganisms that co-occur in kefir fermentations, were studied during anaerobic growth...

The two csp-like genes from the lactic acid bacterium Lactobacillus delbrueckii ssp. bulgaricus were characterized and designated cspA and cspB. The gene cspA has been identified using a polymerase chain reaction (PCR)-based approach with degenerated primers and further characterized using an inverse PCR strategy. cspA encodes a protein of 65 amino acid residues which displays between 81 and 77...

morphological, cultural, physiological and biochemical characteristics were employed to identify lactic acid bacteria (lab), isolated from drinking yoghurt in different areas in fars province, iran. from 18 drinking yoghurt samples a total of 673 lab positives were determined, in which 117 (17.38%) and 556 (82.62%) were identified as lactic acid cocci and lactic acid bacilli, respectively. addi...

crude enzyme (beta-galactosidase) extract (cee) was produced by lactobacillus ssp. bulgaricus chr hansen lb-12 and was applied in sterile milk which had been processed through ultra high temperature method (uht milk), for hydrolyzing lactose. lactosehydrolyzed milk was also produced by a pure and commercially available betagalactosidase (maxilact). optimum quantities of cee and maxilact enz...

in the present work, the effect of milk supplementation on viability of yogurt bacteria (streptococcus thermophilus and lactobacillus delbrueckii subsp. bulgaricus) and probiotic bacteria (lactobacillus acidophilus and bifidobacteria) was studied during yogurt manufacture and thirty three days storage. incubation time to reach ph value of 4.5 was greatly affected by the addition of casein fract...

Lactobacillus delbrueckii subsp. bulgaricus CNRZ 397 (Lb. bulgaricus) is characterized by a high level of peptidase activities specific to proline-containing peptides. A prolidase (PepQ, EC 3.4.13.9) was purified to homogeneity and characterized as a strict dipeptidase active on X-Pro dipeptides, except Gly-Pro and Pro-Pro. The values for Km and Vmax were, respectively, 2.2 mM and 0.33 mmol min...