Enhancement of Anti-MRSA Potential Produced by an Endophytic Fungus Ceratobasidium Ramicola IBRLCM127 via Submerged Fermentation System

Introduction: Exploring endophytic fungi isolated from medicinal herbs could be a turning point in the research of secondary metabolites biosynthesis, as these endophytic fungi are capable of synthesizing the similar compounds as their host plant. The advantages of manipulating endophytic fungi for bioactive compound production are the reduction of dependency rate on slow-growing and rare plants, cost-effective, continuous process, environmentally friendly and high yield in a short period. Thus, the current study envisages investigating the influence of culture conditions against the anti-MRSA potential production of the endophytic fungal isolate, Ceratobasidium ramicola IBRLCM127 isolated from the local medicinal plant Curcuma mangga Valeton & Zijp. Methods: The endophytic fungal isolate was used to produce fungal metabolites through submerged fermentation. The physical parameter improvement was investigated using the ‘one-factor-at-a-time’ technique. The fungal fermentative broth was subjected to an anti-MRSA assay using Lorian method, whereas the growth of a fungus was determined based on the cell growth weight. Results: The highest anti-MRSA potential of 42.50±0.1 U/ml and 5.49±0.1 g/L of mycelial growth was observed after improving the basal medium containing yeast extract sucrose broth incorporated with water extract from the host plant, 6 days old of inoculum age, 2 agar plugs of mycelia, incubation temperature of 25 0C and 12 days of cultivation 12 days of cultivation shaken at 120 rpm in the absence of light. Conclusion: The improved culture conditions shorten the incubation period and yield a significant enhancement of anti-MRSA potential and fungal growth with 13.27% and 10.91%, respectively.