Objective: Based on previous research, black rice (Oryza sativa. L) has been proven to have antioxidant activity which is classified in the very strong category, approximately 41,5 ppm. Rased on that research, this study aims to produce antioxidant functional drink .
Methods: Simplicia powder prepared from black rice (Oryza sativa. L) sample was extracted with 70% ethanol solvent using kinetic maceration, followed by phytochemical screening, determination of extract quality, dry ing extract with freeze drying method, then dry' extract obtained used to produce functional drinks on which evaluation and antioxidant activity test carried out. The antioxidant activity test used in this research was DPPH free radical scavenging method.
Results: Screening result showed that both simplicia and extract contain flavonoid compounds, saponins, tannins, steroids and triterpenoids. Result from dried extract quality determination shown to be thick consistency, has blackish purple color, has specific aroma and bitter, water soluble extract content of 59,04%; ethanol soluble extract content of 69,77 %; moisture content of 7,65%; loss on drying 9,40%; total ash content of 5,17%; acid insoluble ash content of 0,84%; water soluble ash content 4,15%; residual solvent 0,44%. Pb and Cd metal contamination were 1.1994mg/kg and 0,0905mg/kg respectively.Total plate count microbial contamination TNTC and the number of yeast and mold found to be 0,0387x10' colonies/g. Evaluation test of functional drinks with powder type and found to be blackish purple, and specific aroma, and total plate count microbial contamination was 0,31Ox 10 colonies/gram and the number of yeast and mold found was 0,6997 x 102 colony/g. Result of IC50 antioxidant activity of viscous extract was 37,56 ppm ; dried extract was 231,01 ppm; dried extract (aquadestsolvent) was 44,74 ppm and funct onal drinks was 46,36 ppm
Conclusion: Thus results suggest that functional drink of dried black rice’s extract and functional drink produced have very strong antioxidant activity.