Author(s):

Anjani and Rajvir Singh

Abstract: With the improvement in living conditions, food prepared with addition of chemical preservatives is rejected in market. The antioxidant efficacy of acetone extracts of sesame and sunflower meal was evaluated on stability of crude cotton oil (CCO). Protective effects of sesame and sunflower meal extracts in stabilization of CCO was tested, compared to synthetic antioxidants, by measuring their free fatty acid (FFA), peroxide values (PV), p-anisidine value (AV), thiobarbituric acid (TBA), total oxidation value (TOTOX) and conjugated dienes value (CD) during accelerated storage. Peroxide value is one of the most widely used tests for the measurement of oxidative rancidity in oils and fats. Control sample of CCO found more susceptible to oxidative deterioration as PV of control sample found to increase rapidly after 60 days of storage 50°C. For CCO, sesame meal was found effective to restrict the formation of primary oxidation products. PV, FFA, AV, TBA, TOTOX and CD of CCO stabilized with sesame and sunflower meal extracts were significantly lower. Results indicated that sesame and sunflower meal extracts exhibited stronger antioxidant activity in stabilization of CCO than propyl gallate (PG) while its antioxidant activity was less than that of tert-butyl hydroquinone (TBHQ). Thus acetone extracts of sesame and sunflower meal effectively controlled oxidation process in CCO and it is also environmentally benign.

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