| The coconut (Cocos nucifera L.) haustorium is a spongy tissue that is rich in nutritious contents but often thrown away because their benefits are unknown to many people. Food supplements can be used for health promotion, but pharmaceutical products are currently limited due to their low bioavailability, therefore microemulsions are applied because they increase bioavailability and solubility. This study aimed to extract unsaturated fatty acids (UFAs) from coconut haustorium, to formulate supplements in the form of microemulsions containing UFA, and to test the efficacy of the extract and microemulsions for health promotion. This research consisted of 9 steps, including sample preparation, extraction, microemulsion formulation, characterization, efficacy tests, and organoleptic test. Coconut haustorium preparation and extraction produced a yield of 14.60% and 72.04%, respectively. Gas chromatography results showed that all samples contained linoleic acid and oleic acid. Microemulsion products showed no phase separation and were stable for 56 days of storage. Antioxidant activity results showed that microemulsion F0 had antioxidant activity of 86.59%, while -amylase inhibitory activity results showed that all samples did not have any inhibitory activity. Thus, these data indicate that microemulsion food supplement containing coconut haustorium with antioxidant activity could be applied for health promotion. |