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Abstract

Kenikir (Cosmos caudatus Kunth) leaves are plants that contain active compounds that function as antioxidants and have the potential as functional drinks. This research was conducted with the aim of knowing the effect of using a combination of acid sources between citric acid and tartaric acid on the characteristics of effervescent granules, to obtain the best combination of acid sources. The stages of this research were the effervescent granule formulation of kenikir leaf extract including the extraction process, microencapsulation, and determination of the formula with a combination of citric acid and tartaric. The method used for the making of effervescent granules was dry granulation method. The factor used in this research was the ratio of the composition of citric acid and tartaric acid including 0%:100%, 25%:75%, 50%:50%, 75%:25% and 100%:0%. The experimental design used in this study was a randomized block design. The data were analyzed by means of variance and continued with the Tukey test if there was an effect of treatment on the results. The results showed that the comparison of the composition of citric acid and tartaric acid had a significant effect on the characteristics of effervescent granules of kenikir leaf extract. The best composition of citric acid and tartaric acid is 75% citric acid and 25% tartaric acid which produces specific gravity 41g/ml, bulk density 0.72gr/ml, flow rate 12, 39gr/second, dissolution time 137seconds, foam volume 8%, pH 6.32 and has antioxidant activity of 21.37%.