Characterization of Lactobacillus helveticus strains resistant to lysozyme
نویسندگان
چکیده
منابع مشابه
Health-promoting properties exhibited by Lactobacillus helveticus strains.
Many strains belonging to lactobacilli exert a variety of beneficial health effects in humans and some of the bacteria are regarded as probiotic microorganisms. Adherence and capabilities of colonization by Lactobacillus strains of the intestinal tract is a prerequisite for probiotic strains to exhibit desired functional properties. The analysis conducted here aimed at screening strains of Lact...
متن کاملrorn Lactobacillus helveticus
2 Department of Food Science, University of Wisconsi nMad ison, WI 53706, USA A prolinase (pepR) gene was cloned from an industrial Lactobacillus helveticus strain (53/7). Three clones, hybridizing with a gene probe specific for a peptidase shown to have activity against diand tripeptides, were detected from a L. helveticus genomic library constructed in Escherichia coli. None of the three clon...
متن کاملCharacterization of a thiol-dependent endopeptidase from Lactobacillus helveticus CNRZ32.
An endopeptidase gene (pepE) was isolated from a previously constructed genomic library of Lactobacillus helveticus CNRZ32. The pepE gene consisted of a 1,314-bp open reading frame encoding a putative peptide of 52.1 kDa. Significant identity was found between the deduced amino acid sequence of pepE and the sequences for aminopeptidase C from Lactobacillus delbrueckii subsp. lactis DSM7290, L. ...
متن کاملMolecular characterization of a stress-inducible gene from Lactobacillus helveticus.
A gene (htrA) coding for a stress-inducible HtrA-like protein from Lactobacillus helveticus CNRZ32 was cloned, sequenced, and characterized. The deduced amino acid sequence of the gene exhibited 30% identity with the HtrA protein from Escherichia coli; the putative catalytic triad and a PDZ domain that characterize the HtrA family of known bacterial serine proteases were also found in the seque...
متن کاملProduction and Structural Characterization of Lactobacillus helveticus Derived Biosurfactant
A probiotic strain of lactobacilli was isolated from traditional soft Churpi cheese of Yak milk and found positive for biosurfactant production. Lactobacilli reduced the surface tension of phosphate buffer saline (PBS) from 72.0 to 39.5 mNm(-1) pH 7.2 and its critical micelle concentration (CMC) was found to be 2.5 mg mL(-1). Low cost production of Lactobacilli derived biosurfactant was carried...
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ژورنال
عنوان ژورنال: Le Lait
سال: 1991
ISSN: 0023-7302
DOI: 10.1051/lait:199115