| dc.description.abstract | The Effect of Aloe Vera (Aloe vera L.) Juice and
Orange (Citrus sinensis L.) Juice Ratio and the Addition of Roselle Flower Extract
(Hibiscus sabdariffa L.) on the Quality of Carbonated Aloe Vera Beverage
(Supervised by TERIP KARO-KARO).
This study aimed to determine the effect of the ratio of aloe vera juice to
orange juice and the addition of roselle flower extract on the chemical and
organoleptic characteristics, as well as to identify the best formulation of
carbonated aloe vera beverage. The research used a factorial Completely
Randomized Design (CRD) with two factors: the ratio of aloe vera juice to orange
juice (50%:50%, 60%:40%, 70%:30%, 80%:20%) and the concentration of roselle
extract (1%, 2%, 3%, 4%).The parameters analyzed included total dissolved solids,
carbon dioxide content, pH, total acidity, vitamin C content, and organoleptic tests
both descriptively (color, aroma, taste) and hedonically (overall acceptance).
The results showed that the juice ratio had a highly significant effect
(P<0,01) on total dissolved solids, carbon dioxide, pH, total acidity, vitamin C
content, and organoleptic attributes (color, aroma, taste, and overall acceptance).
The addition of roselle extract also had a highly significant effect (P<0,01) on pH,
total acidity, vitamin C content, and color, but did not have a significant effect
(P>0,05) on total dissolved solids, carbon dioxide, aroma, taste, and overall
acceptance. The interaction of the ratio between aloe vera juice and orange juice,
along with the addition of roselle extract, had a highly significant effect (P>0.01)
on pH. The best treatment, determined using the De Garmo method, was L3R3 (70%
aloe vera juice : 30% orange juice with 3% roselle extract). This formulation
showed an antioxidant activity of 67,1966% and a reducing sugar content of
4,8863%. The best treatment was subjected to a hedonic test compared to a
commercial product, resulting in a score of 5,8285 for L3R3 and 5,7809 for the
commercial product, both with a description of liked. | en_US |
