Myrobalans Mediated Nanocolloids in Controlling Marine Pathogens

Abstract

\n Aquaculture production is affected by disease outbreak, which affect the production, profitability, and sustainability of the global aquaculture industry. Antibiotics have been widely used to control various pathogens. Due to its uncontrollable and indiscriminate usage, pathogens have developed resistance towards antibiotics. This current study aims to synthesize green silver- of silver nanocolloids (MBNc) from the extract of three myrobalans. MBNc was characterized by using UV-Vis spectroscopy, DLS, Zeta potential, FE-SEM. EDX, HRTEM, and SAED techniques. The array of antimicrobial assays were performed to evaluate the efficacy of MBNc against vibriosis causing pathogens including V. harveyi, V. alginolyticus, V. parahaemolyticus, and foodborne pathogen S. haemolyticus, isolated from infected fish. Further, the presence of ESBL genes including CTX-M-15 and Amp C were analyzed in control and MBNc treated strains. From our studies, it was observed that MBNc was very effective in controlling the growth and biofilm formation in all tested marine pathogens and effectively abolish the genes encoding ESBL CTX-M-15 in antibiotic-resistant pathogens tested. Thus, MBNc can be formulated to control the growth of marine pathogens and it can be used as an alternative to antibiotics to prevent infection in cage culturing and aquafarming.