Objective: To explore the anticancer activity of the flowers of Argemone mexicana L. against the human hepatoma cell line (HepG2).Methods: In vitro anticancer activity was carried out to screen cytotoxicity effectiveness of the solid obtained from ethyl acetate fraction of A. mexicana L. flower extract at different concentrations against the HepG2 cell line. The MTT (methylthiazolyl diphenyl- tetrazolium bromide) assay for cell viability and markers is expected to confirm the cytotoxicity.Result: Ethyl acetate fraction from the flower extract of A. mexicana L. was tested for its anticancer activity against HepG2 cell lines (liver cancer) at various concentrations by MTT assay. It was confirmed that the IC50 value of this sample was 72±1.7 μg/ml against liver cancer HepG2 cell line.Conclusions: A. mexicana L. is a potential plant with anticancer activity. The isolation of the pure compounds and determination of the structure of individual compounds will be further performed.

Objective: The objective of this study was to evaluate the antioxidant and anti-inflammatory activities of the solid powder obtained from the ethyl acetate fraction from the flower Opuntia stricta. Methods: The flower extract was evaluated for antioxidant activity by 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay and reducing power assay was carried out by ferric-reducing capacity (FRC) assay method. The in vitro anti-inflammatory activity was evaluated using human peripheral blood mononuclear cells (PBMCs) stimulated by lipopolysaccharide (LPS) to evaluate nitric oxide (NO) production method. Results: The solid powder obtained from the ethyl acetate fraction from the flower O. stricta showed a good antioxidant activity in scavenging DPPH radical and FRC assay with compared standard sample. This solid powder also showed good anti-inflammatory activity in cell viability (LPS-induced PBMCs) assay and NO assay. Conclusion: These results suggest that the solid powder obtained from the ethyl acetate fraction from the flower O. stricta has significant antioxidant and anti-inflammatory activities.