Probiotic potency ofLactobacillus plantarumKX519413 and KX519414 isolated from honey bee gut

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Abstract

The Indian honey bee Apis cerana indica, which harbors an abundant and diverse range of lactic acid bacteria (LAB) in their gut with beneficial effects, was used as the source for the isolation of LAB. In the present study, two LAB isolates from honey bee gut were selected primarily based on their phenotypic and selective biochemical characterization, followed by PCR and identified using 16S rRNA sequencing as Lactobacillus plantarum and were registered in National Centre for Biotechnology Information under accession number KX519413 and KX519414. The probiotic potency of test strains indicated their survivability at acidic pH, bile salts and viability in simulated gastric juice enabling them to withstand gastrointestinal tract conditions. Evaluation of cell surface properties suggested that they possess an important defense mechanism against the pathogen since they are hydrophobic, auto-aggregative and have co-aggregative ability. Further, efficient exopolysaccharide production by them indicates not only their ability to enrich biofilm formation and auto-aggregation, but also enhances bacterial adhesion and colonization on the host intestinal tract. The present study concluded that L. plantarum from the gut of Apis cerana indica possesses probiotic potency, and potential candidates for use as food besides application in nutraceutical and pharmaceutical industries.

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