Antimicrobial activities of extract and compounds isolated from Kaempferia Parviflora and Curcuma Caesia

This study aimed to evaluate the efficacy of herbal remedies against bacterial pathogens such as Escherichia coli and Staphylococcus aureus. Kaempferia parviflora and Curcuma caesia, commonly known as 'Black Ginger' and 'Black Turmeric,' respectively, belong to the Zingiberaceae family and have been reported to possess antibacterial and therapeutic properties. The Minimum Inhibitory Concentration (MIC) of K. parviflora rhizome extract was determined to be 8 mg/ml,resulting in growth inhibition of both E. coli and S. aureus, with inhibition zones of 10.64±0.453mm and 11.46±0.200mm, respectively. Similarly, for C. caesia rhizome extract, the MIC was found to be 2 mg/ml, with inhibition zones of 11.37±0.100mm for E. coli and 11.38±0.134mm for S. aureus. The results indicated that lower concentrations of the extracts were effective and statistically significant compared to higher concentrations. This study underscores the importance of K. parviflora and C. caesia as antibacterial agents in both traditional and modern therapeutic applications.