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Interactions among yeast and probiotic bacteria enhance probiotic properties and metabolism offering augmented protection to Artemia franciscana against Vibrio anguillarum.

08:00 EDT 19th October 2018 | BioPortfolio

Summary of "Interactions among yeast and probiotic bacteria enhance probiotic properties and metabolism offering augmented protection to Artemia franciscana against Vibrio anguillarum."

The interactions of the probiotics Bacillus subtilis, Lactococcus lactis and Lactobacillus plantarum with the yeast Saccharomyces cerevisiae were examined in terms of probiotic and biochemical characteristics. Yeast supernatant had a positive effect on the aggregation biofilm formation capacity and hydrophobicity of probiotics, and resulted in increased lactic acid levels, reduced pH values as well as lower RS and FAN levels of probiotics. The effect of probiotics supernatants on yeast was more complex but best results were obtained in the yeast: probiotic CFS ratio of 1:2 for B. subtilis and of 2:1 for the other probiotics. The observed effects depended on the volume ratio of the cell free supernatant to the culture it was applied on. Best results were obtained by the volume ratio probiotic: yeast of (2:1) for B. subtilis and of (1:2) probiotic: yeast for L. plantarum and L. lactis. These ratios were used for further evaluation in vitro against V. anguillarum, resulting in reduced survival and attachment properties of the pathogen. Moreover, the administration of the corresponding combination of bacteria and yeast to Artemia nauplii greatly improved their survival following a challenge with the pathogen. Our results demonstrate that yeast enhances the protective effect of probiotics in a strain specific manner.

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This article was published in the following journal.

Name: Microbial pathogenesis
ISSN: 1096-1208
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