Antioxidant and Antimicrobial Activities of Egyptian Eruca saliva Seed Volatile Oil

摘要

The percent yield of Egyptian Eruca saliva seeds volatile oil obtained by water distillation was 0.45%. The volatile oil components were separated and identified by gas chromatography / mass spectrometry . Twelve constituents were identified and found to be belonging to isothiocyanates group and nitriles group. The major constituent was 4- methyl thiobutyl isothiocyanates which represented 94.10%. Volatile oil was tested to evaluate its antioxidant activity. 200 ppm and 400 ppm of Eruca sativa seeds volatile oil were added to sunflower oil. Stability of sunflower oil was determined by rancimat method, before and after addition of the volatile oil. Sunflower oil was also mixed with 200 ppm synthetic antioxidant agent (BHT). Oxidative stability was 6.8 hr, 16.8 hr, 7.4 hr and 14.9 hr for sunflower oil (control), Sunflower oil mixed with 200 ppm BHT. Sunflower oil mixed with 200 ppm volatile oil and sunflower oil mixed with 400 ppm volatile oil, respectively.