Phytochemical investigation and antioxidant activity of ethanolic extract, n-hexane and ethyl acetate fraction of salaon leaves (Indigofera tinctoria Linn.)

Abstract

Plants known as salaon (Indigofera tinctoria L.) are commonly employed in conventional medicine. Salaon leaves have secondary metabolites sunch as alkaloid, flavonoid, tannin, glycoside, phenol, saponin and triterpenoid levels have benefit as antioxidants in counteracting free radicals. The aimed of this research was to investigate the Antioxidant properties of The EESL, NHFSL and EAFSL. Phytochemical investigation process was used on extracts and fractions. Antioxidant properties was determined using the DPPH technique and a UV/Vis spectrophotometer at 515 nm. The water level of salaon leaf simplicia was around 9.32%; water-soluble extract of 34.70%, ethanol-soluble extract of 23.94%, total ash of 8.57% and acid insoluble ash of 1.38%. Alkaloids, flavonoids, glycosides, tannins, saponins, steroids, and triterpenoids were found in the phytochemical investigation of EESL. The EESL, NHFSL and EAFSL which were tested for antioxidant properties revealed IC50 values of (70.5046 ± 0.0409; 77.2190 ± 0.0021; 56.5593 ± 0.0120) µg/mL. IC50 value of quercetin in the extremely strong category is 2.5424± 0.0010 µg/mL. The results of this investigation indicate that salaon leaf ethanol extract, n-hexane, and ethyl acetate fraction have potent antioxidant properties.