Fruit Extract and Phenolic Compounds of Phyllanthus emblica Fruits as Bioactivity Enhancer of Chloramphenicol Against Bacterial Species.

Phyllanthus emblica L. (syn. Emblica officinalis) fruits have been traditionally exploited to enhance the immune system and provide protection against bacterial and fungal diseases. The present study aimed to evaluate the synergistic interactions between chloramphenicol and several phenolic compounds found in P. emblica fruits against bacterial strains. The combination of P. emblica fruit extracts and its phenolic compounds demonstrated synergistic antibacterial activity when used in conjunction with chloramphenicol against both Gram-positive and Gram-negative bacteria. The combination of MIC with ½MIC exhibited a significant increase in bioactivity, with a 333.33-fold enhancement against B. subtilis. Similarly, the combination of MIC with 2MIC displayed a bioactivity enhancement of 16.02 folds against S. aureus. The co-administration of ½MIC and ½MIC resulted in a significant 35.71-fold increase in bioactivity against P. aeruginosa. Similarly, the combination of MIC and ½MIC exhibited a remarkable 166.66-fold enhancement in bioactivity against E. coli. The combinations of 2MIC and ½MIC, as well as ½MIC and ½MIC demonstrated the highest bioactivity enhancement of 17.85 folds for K. pneumoniae. This study claimed that the fruit extracts of P. emblica and its phenolic compounds could be utilized to augment the effectiveness of conventional antibiotics, which have acquired resistance to bacterial infections.