Bactericidal and non‐cytotoxic activity of bacteriocin produced by Lacticaseibacillus paracasei F9 ‐02 and evaluation of its tolerance to various physico‐chemical conditions

Autor: Senbagam Duraisamy, Aswathy Sathyan, Senthilkumar Balakrishnan, Prabhu Subramani, Chidhambaram Prahalathan, Anbarasu Kumarasamy
Rok vydání: 2023
Předmět:
Zdroj: Environmental Microbiology.
ISSN: 1462-2920
1462-2912
Popis: This study aims to explore novel LAB (Lactic acid bacteria) from breast-fed infants' feces towards characterizing their antimicrobial compound, bacteriocin. The LAB, Lacticaseibacillus paracasei F9-02 showed strong antimicrobial activity against clinical pathogens. Their proteinaceous nature was confirmed as the activity was completely abolished when treated with proteinaceous enzymes and retained during neutral pH and catalase treatment. The purified bacteriocin showed antimicrobial activity at the MIC value of 7.56 μg/mL against vancomycin-resistant Enterococcus sp. (VRE). and methicillin-resistant Staphylococcus aureus (MRSA), 15.13 μg/mL against Klebsiella pneumoniae, Pseudomonas aeruginosa, Salmonella enterica subsp. enterica serotype. Typhi and 30.25 μg/mL against Shigella flexneri. Present study also proved the bactericidal, non-cytotoxic and non-hemolytic nature of bacteriocin. Additionally, bacteriocin retained their stability under various physico-chemical conditions, broad range of pH (2-10), temperature (40-121°C), enzymes (amylase, lipaselysozyme), surfactants (Tween 20, 40, 100SDS), metal ions (CaCl
Databáze: OpenAIRE
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