IN VITRO EVALUATION OF ANTIOXIDANT ACTIVITY OF GINGER (Zingiber Officinale)

Abstract

Find out the scientifically evidence of Ginger (Zingiber Officinale) for it’s antioxidant property. Preliminary phytochemical screening and in-vitro antioxidant activity of Ginger (Zingiber Officinale) extract were investigated but the extraction was done at different temperature( 35ºC,60ºC,100ºC) by decoction process. The antioxidant activity was studied in some in-vitro antioxidant models like DPPH radical scavenging activity, superoxide radical scavenging activity, ferric reducing power and hydrogen peroxide scavenging activity. Total antioxidant capacity was also determined. The Ginger (Zingiber Officinale) extract showed antioxidant activity by inhibiting DPPH, scavenging superoxide and hydrogen peroxide. It also showed reducing power ability in ferric reducing model. Total antioxidant capacity was found to be 18.32 mg/gm expressed as L-Ascorbic acid. Significant antioxidant activity of Water extract of Ginger (Zingiber Officinale) was found which might be due to the presence of Acidic compounds, Flavonoids, Phenols, Saponins, Tannins (Phenolic compounds) and Triterpenoids found in the preliminary Phytochemical screening