relation: http://repository.uhamka.ac.id/id/eprint/628/ title: Optimization of The Concentration of Citric Acid and Tartaric Acid (1:2) as The Acid Source Reviewed of The Physical Properties of Noni Juice Effervescent Granules creator: Ari, Widayanti creator: Naniek Setiadi, Rajab creator: Dwi, Oktarini subject: H Social Sciences description: Noni (Morinda citrifolia L.) has many benefits to heal or keep the body fit. One of them is as food supplement. In this research, noni was prepared as the effervescent granules using combination of citric acid and tartaric acid(1:2) as the source of acid. Noni fruit was processed to becomejuice then dried by the spray drying process. ARerthat, “it was made into effervescent granules by wef granulation method with the source of the acid concentration of 10, 15, 20, and 25%. The result of angle of repose test were: FI 29°,52", Fll 29°,35“; FIII 28°,50“and 28°,20" FIV. the dissolving result of 10 g effervescent granules were: FI 134 sec; FII 117 seconds; Flll 88 seconds; FIV 63 seconds. Based on the results of statistical analysis one way ANOVA on angle of repose, sig value (0.001)