Probiotic properties of lactobacilli species isolated from children's feces

In the present research, the 20 lactobacilli isolated from children feces aged 4–15 years old were investigated for their capabilities to survive at pH 2.0, 2.5, 3.0 and in the presence of 0.25, 0.50 and 0.75% bile salts, their effect on the growth of pathogens, in addition to their sensitivity agai...

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Bibliographic Details
Published in:Anaerobe 2013-12, Vol.24, p.36-42
Main Authors: Tulumoglu, Sener, Yuksekdag, Zehra Nur, Beyatli, Yavuz, Simsek, Omer, Cinar, Berat, Yaşar, Esra
Format: Article
Language:English
Subjects:
Adolescent
Anti-Bacterial Agents - pharmacology
Antibiosis
Bacterial Adhesion
Bile Acids and Salts - toxicity
Child
Child, Preschool
Children's feces
Cholesterol - metabolism
Escherichia coli
Escherichia coli - growth & development
Feces - microbiology
Female
Humans
Hydrogen-Ion Concentration
Lactobacillus
Lactobacillus - drug effects
Lactobacillus - isolation & purification
Lactobacillus - physiology
Lactobacillus pentosus
Male
Microbial Sensitivity Tests
Microbial Viability - drug effects
Polysaccharides, Bacterial - metabolism
Probiotic
Probiotics - isolation & purification
Pseudomonas aeruginosa
Pseudomonas aeruginosa - growth & development
Staphylococcus aureus
Staphylococcus aureus - growth & development
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Summary:In the present research, the 20 lactobacilli isolated from children feces aged 4–15 years old were investigated for their capabilities to survive at pH 2.0, 2.5, 3.0 and in the presence of 0.25, 0.50 and 0.75% bile salts, their effect on the growth of pathogens, in addition to their sensitivity against 13 selected antibiotics. All the lactobacilli strains were able to survive in low pH and bile salt conditions at pH 2.0 and 0.25% bile salt for 2 h. Moreover, all lactobacilli strains exhibited inhibitory activity against Escherichia coli ATCC 11229, Pseudomonas aeruginosa ATCC 27853 and Staphylococcus aureus ATCC 29213. In addition, all lactobacilli strains indicated resistance to teicoplanin, vancomycin, and bacitracin. The amount of exopolysaccharide (EPS) produced by the strains was 70 and 290 mg/L. The capabilities to autoaggregation and coaggregate with E. coli ATCC 11229 of the strains were also evaluated. High EPS-producing strains indicated significant autoaggregation and coaggregation capability with test bacteria (p 
ISSN:1075-9964
1095-8274
DOI:10.1016/j.anaerobe.2013.09.006