Track: Sustainability

Abstract

Dates were fruits have many nutrients including minerals, vitamins and active compounds as antioxidants. Bilimbi contains vitamin C, minerals, amino acid. Dates were usually consumed directly without any processing, bilimbi could not be because the taste was too sour. The purpose of this research was to utilize dates juice and bilimbi juice in making effervescent tablets. The combination of dates and bilimbi will make the sour taste of bilimbi diminish because the sweetness of the dates which were natural sweetener. Making effervescent tablets began with making juices from dates and bilimbi fruits and then making juices powder by freeze drying method without addition of sugar. The ratio of dates:bilimbi juice powder were 9:1, 8:2, and 7:3 and sodium bicarbonate:citric acid: 1:1, 2:1 and 1:2. Effervescent tablet drinks were analyzed of its antioxidant activity (IC₅₀), hedonic, physicochemical analysis (pH, color, total titratable acid, total soluble solid). The best formulation was the ratio of dates:bilimbi juice powder 9:1 and sodium bicarbonate:citric acid 2:1 has IC₅₀ 6.79%, phenolic 19.47 mg GAE /L, flavonoids 10.17 mg QE /L. The average overall hedonic results was 4.6 (scale of 1-7). Dates and bilimbi can be used as diversification of healthy food products in form effervescent tablets.