NUTRITIONAL AND NUTRACEUTICALS ANALYSIS OF GRAPE SEED POWDER

Abstract

Grape seeds (Vitis-Vinifera L.) are good sources of phyto-chemicals and are suitable raw materials for the production of antioxidant rich dietary supplements. Grape seeds are rich in pro-anthocyanidins which possess potent free radical scavenging activity. The proximate composition of grape seed and micro nutrients were 38.2% fiber, 15.8% total lipids, 10.7% proteins, 2.58% ash, 22.37% carbohydrates and 10.4% moisture, micronutrients and phytochemical analysis of grape seed extract revealed the presence of steroids, terpenoids, anthocyanins, emodins, glycosides, flavonoids and phenols in acetone (70%), ethanol (70%) and methanol respectively Both steroids and terpenoids were absent in water extract. Saponins were absent in methanol and water extracts. DPPH assay was used to estimate the antioxidant activity and the results revealed that acetone (70 %) is the most efficient solvent to extract the total phenolic compounds and flavonoids from grape seed when compared to the other selected solvents for the study.