The effect of prebiotics on production of antimicrobial compounds, resistance to growth at low pH and in the presence of bile, and adhesion of probiotic cells to intestinal mucus
Date
2006
Authors
Brink M.
Todorov S.D.
Martin J.H.
Senekal M.
Dicks L.M.T.
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Abstract
Aims: Screening of five bile salt-resistant and low pH-tolerant lactic acid bacteria for inhibitory activity against lactic acid bacteria and bacterial strains isolated from the faeces of children with HIV/AIDS. Determining the effect of prebiotics and soy milk-base on cell viability and adhesion of cells to intestinal mucus. Methods and Results: Lactobacillus plantarum 423, Lactobacillus casei LHS, Lactobacillus salivarius 241, Lactobacillus curvatus DF 38 and Pediococcus pentosaceus 34 produced the highest level of antimicrobial activity (12 800 AU ml-1) when grown in MRS broth supplemented with 2% (m/v) dextrose. Growth in the presence of Raftilose®Synergy1, Raftilose®L95 and Raftiline®GR did not lead to increased levels of antimicrobial activity. Cells grown in the presence of Raftilose®Synergy1 took longer to adhere to intestinal mucus, whilst cells grown in the absence of prebiotics showed a linear rate of binding. Conclusions: A broad range of gram-positive and gram-negative bacteria were inhibited. Dextrose stimulated the production of antimicrobial compounds. Adhesion to intestinal mucus did not increase with the addition of prebiotics. Significance and Impact of the Study: The strains may be incorporated in food supplements for HIV/AIDS patients suffering from gastro-intestinal disorders. © 2006 The Society for Applied Microbiology.
Description
Keywords
antiinfective agent, bile salt, glucose, prebiotic agent, probiotic agent, raftiline, raftilose, human immunodeficiency virus, antimicrobial activity, article, bacterial strain, bile, cell adhesion, cell growth, cell viability, gastrointestinal disease, Gram negative bacterium, Gram positive bacterium, growth, human, Human immunodeficiency virus infected patient, intestine mucosa, lactic acid bacterium, Lactobacillus casei, Lactobacillus curvatus, Lactobacillus plantarum, Lactobacillus salivarius, nonhuman, Pediococcus, pediococcus pentosaceus, pH measurement, screening, soybean milk, Anti-Bacterial Agents, Bacterial Adhesion, Bile, Child, Feces, Food Microbiology, Freeze Drying, HIV Infections, Humans, Hydrogen-Ion Concentration, Intestinal Mucosa, Lactobacillus, Lactobacillus casei, Lactobacillus plantarum, Pediococcus, Probiotics, Soy Milk, Bacteria (microorganisms), Glycine max, Human immunodeficiency virus, Lactobacillus casei, Lactobacillus curvatus, Lactobacillus plantarum, Lactobacillus salivarius, Negibacteria, Pediococcus, Pediococcus pentosaceus, Posibacteria
Citation
Journal of Applied Microbiology
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100
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