Kenikir leaves (Cosmos caudatus Kunth.) contain flavonoid group compound quercetin which has potential as anti-cancer. The extract of kenikir leaves has low solubility and bioavailability so that a modification of the drug delivery system is needed in the form of folic acid-conjugated chitosan-alginate polymer-based nanoparticles. Folic acid-conjugated chitosan carries the drug to folate recept…