Essential oil composition and antioxidant activity of trigonella foenum graecum L. plant

ABSTRACT: Fenugreek plant by scientific name trigonella foenum graecum L is one of the value specis by leguminosae family that this plant are grow up in different domain of iran.at this investigation ,essence and methanolic and ethanolic extracts of fenugreek were studied .aerial part during flowering process around sari city in the mazandran state are collected and then dry at shadow .the chemical composition Of the essence of fenugreek obtained by hydrodistillation and were analyzed by GC/MS .result show fenugreek has 35 components that is 94% of total essence of this plant . main components essence at this plant including:?-bisabolol 2.3% ,?-cadinene 1.8%,farnesol 0.9%,?-cadinol1.7%,?-eudesmol o.8%,Trigonellin0.6%,diosgenin0.8%. Aerial part of plant by soxhelt extraction from solvent and fatness. Main component extract at this plant Including:coumarin, fugarsterol,stigmasterol,nicotinic acid . Stigmasterole compound in this plant cause of blood cholesterol decrease and coumarin,trigonelline And nicotinic acid of cause of hypoglycaemic . For antioxidant activity investigation ,used of FRP,DPPH and FTC ,TBA method .then result by comparison of vitamin c antioxidant activity (natural antioxidant ) and BHT(synthetic antioxidant). Percentage of antioxidant were determined for ethanolic extract of plant under study %65-27, methanolic extract % 63-32 by FTC method ,%47-38 for ethanolic essence and for methanol essence%40-15 Used for TBA method . By regards of this plant in iran natural ,essence of this plant as an natural antioxidant in industrial food And drugs.