Functional properties of Lactobacillus acidophilus metabolites |
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| Authors: | Bartosz Brzozowski Włodzimierz Bednarski Bartłomiej Dziuba |
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| Affiliation: | 1. Department of Food Biotechnology, University of Warmia and Mazury in Olsztyn, 10‐718 Olsztyn, Poland;2. Department of Industrial and Food Microbiology, University of Warmia and Mazury in Olsztyn, 10‐726 Olsztyn, Poland |
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| Abstract: | BACKGROUND: This study addressed the characteristics of metabolites synthesized by Lactobacillus acidophilus 5e2, with particular attention paid to exopolysaccharides, biosurfactants, proline peptidases and antibacterial compounds. RESULTS: The strain Lb. acidophilus 5e2 synthesizes low‐molecular‐mass polysaccharides (340 kDa) constituted by glucose, galactose and glucosamine at a ratio of 3.3:2.8:1.0, as well as biosurfactants with a molecular mass of 32 kDa built from a protein fraction, a polysaccharide fraction and phosphate groups. It additionally synthesizes extra‐ and intracellular proline peptidases, including prolyl endopeptidase and thermostable low‐molecular‐mass (<3.5 kDa) compounds with antimicrobiological activity against Escherichia coli strains. CONCLUSION: The strain Lb. acidophilus 5e2 may be applied to the production of functional food. Copyright © 2009 Society of Chemical Industry |
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| Keywords: | biosurfactant exopolysaccharide prolyl endopeptidase Lactobacillus acidophilus |
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