AKTIVITAS ANTIOKSIDAN EKTRAK ETANOL 96% DAUN MENGKUDU (MORINDA CITRIFOLIA) DENGAN MENGGUNAKAN METODE DPPH (2,2-DIFENIL-1-PIKRIHIDRAZIL)

Abstract

One of the plants that has antioxidants is noni leaves (M. ctrifolia). The
purpose of this study was to determine the best antioxidant content
between old and young noni leaves. The implementation of this study was
carried out in several stages, namely extraction, phytochemical
screening, total flavonoid test, total phenol test and antioxidant test of
noni leaf extract using the DPPH (2,2-diphenyl-1-picylhydrazyl) method.
The results obtained for the IC50 value of the ethanol extract of old noni
leaves were 309.99 ± 0.90 µg / ml, young noni leaf extract 255.33 ± 0.12
µg / ml, and quercetin 4.09 ± 0.10 µg / ml. The antioxidant activity of
noni leaves with better results is young noni leaves. The total phenol test
results of old noni leaves were 584.79 mg/kg and the results of young
noni leaves were 543.42 mg/kg. The total flavonoid test results of old noni
leaves were 5.20±0.16 mg QE/g and the results of young noni leaves were
7.08±0.14 mg QE/g.