Abstract :
Diabetes mellitus is a group of metabolic disorders characterized by
hyperglycemia due to abnormalities of the metabolism of carbohydrates, fats, and
proteins. Flavonoids are compounds that can reduce levels of glucose in the
blood. Rambutan leaf (Nephelium lappaceum L) is one of the plants that contain
flavonoids. This research is an experimental research aims to produce syrup for
the treatment of diabetes with various concentrations of propylene glycol as a
cosolvent. Rambutan leaf was extracted using maceration with 96% ethanol.
Rambutan leaf extract made syrup preparations with propylene glycol at a
concentration of 0%, 11%, 12% and 13%. Syrup obtained is tested includes the
organoleptic test, homogeneity, BJ, pH, viscosity, displaced volume and
acceptabillitas. Based on the research formulation of the rambutan leaf extract in
the preparation of syrup showed that the addition of propylene glycol has an
influence on the sense of providing a sweet taste so the addition of propylene
glycol to improve the taste of the preparation of syrup rambutan leaf extract as
well. The concentration of propylene glycol 11% produce a preparation of syrup
rambutan leaf extract with the best physical stability.