PERBANDINGAN AKTIVITAS ANTIOKSIDAN EKSTRAK DAUN KELOR (Moringa oleifera Lam) DAN KULIT JERUK NIPIS (Citrus aurantifolia)

: Comparison of Antioxidant Activity of Moringa Leaf Extract (Moringa oleifera Lam) and Lime Peel (Citrus aurantifolia). The use of synthetic antioxidant is starting to be limited because it turns out from the results of research that has been done that synthetic antioxidants such as BHT (Butylated Hydroxy Toluene) and BHA (Butyl hydroxy anisol) can be carcinogenic. Therefore, the body needs natural antioxidants as a source of antioxidants with a high level of activity and safety. One source of natural antioxidants are Moringa leaves (Moringa Oleifera Lam) and lime peel (Citrus aurantifolia). This study was conducted to determine differences in the single antioxidant activity of moringa leaves, lime and their combinations. Moringa leaf and lime peel samples combined with various comparisons ((1:0) (0:1) (1:1) (1:2) (2:1)) with concentrations of 20, 40, 60, 80, 100 mg/ mL while ascorbic acid as a comparison made concentrations of 2, 4, 6, 8, 10 mg/mL. Each concentration series was added DPPH 40 ppm and incubated for 30 minutes, absorbance was measured using Visible Spectrophotometry with a wavelength of 516 nm. The IC 50 value for a single extract of Moringa leaves (1:0) was 14.37 ppm, lime peel extract (0:1) 37.92 ppm, combination (1:1) 51.12 ppm, combination (1:2) 75.57 ppm, combination (2:1) 49.34 ppm while ascorbic acid value IC50 0.47 ppm. Statistical test results showed that all samples had antioxidant activity which was not significantly different from ascorbic acid except for the combination of extract (1:2) with Sig. P<0.05 and the most effective sample was the single extract of Moringa leaves.