Antibacterial kinetic study was further proven that PEK has good antibacterial activity. Moreover, cytotoxicity study revealed that all of extracts did not have any cytotoxic activity against all selected cell lines (IC50 value > 30 μg/mL). Result founded that both keys and core parts of P. tectorius fruits were found to be rich by phenolics content and potent as antioxidant and antibacterial agents