Antioxidant and cytotoxic effect of Dillenia suffruticosa and Eugenia polyantha water extracts against nasopharyngeal carcinoma cells

This study examined the antioxidant activities and cytotoxicity extracts of aqueous extracts of Eugenia polyantha and Dillenia suffruticosa. E. polyantha possessed high phenolic contents (6.62mg GAE/ 100mg) and also high antioxidant activity as determined using DPPH (EC50 = 60.9 mg/L) and ABTS (EC50 = 24.2 mg/L) assays. Furthermore, E. polyantha was able to reduce the NPC/HK1 cancer cell viability (IC50 = 61.5 mg/L) while D. suffruticosa was able to prevent the cell migration at 72 mg/L (IC25 value) after 24h of incubation.