Fatty acids analysis and antioxidant activity of fixed oil of quercus infectoria, grown in Jordan

Abstract

Quercus infectoria seeds were used in the present study, and fatty acid content in fixed oil was determined using GC-FID. The total amount of the oil present in the seed was 7.2%. The major fatty acid identified were oleic acid (58.13%), linoleic acid (19.84%), palmitic acid (15.99%), stearic acid (2.27%), α–linolenic acid (1.31%) and other constituents like heptadecanoic acid, cis-11-eicosenoic acid, cis-10-heptadecenoic acid, behenic, lignoceric and myristic acid with less the 1%. Due to its phenolic compounds and α-tocopherol, the oil exhibits its antioxidant activity. Antioxidant properties of the oil were determined via DPPH radical scavenging and β-carotene bleaching assay. The physical properties and UV and FT-IR spectra were also determined.