Karakterisasi Flavonoid Antioksidan Dari Daun Jambu Biji (Psidium guajava L.)
Abstract: Flavonoid compounds
have been isolated from guajava leaf from 100 grams of dried samples of guava
leaf were obtained liquid extract 130
mL, n-hexane fraction as much as 1.65 g, 1.95 g of chloroform fraction,
fraction of 1.87 g ethyl acetate, butanol fraction of 2.15 g, and the remaining
fraction as much as 28.96 g and flavonoid A as much as 36.9 mg. Flavonoid A is
a yellow amorph form and decompose at a temperature of 190-192 C. Based on
ultraviolet spectrum with various reagents shear and infrared spectrum, these
compounds are known as flavonol-3-O-diglukosida. Flavonoids A provide
antioxidant activity with the percent inhibition of 85.364% ± 0.2073%, while
the flavonoid B 68.160%, ± 0.2073.
Penulis: Harrizul Rivai, Lisa
Putriani, Mahyuddin
Kode Jurnal: jpfarmasidd100089
