Study of Antioxidant Activity of Spinach Extract in Stabilization of Sunflower Oil under Accelerated Storage Conditions
Study of Antioxidant Activity of Spinach Extract in Stabilization of Sunflower Oil under Accelerated Storage Conditions
Memoona Tehseen1, Sajila Hina2*, Alim-un-Nisa2 and Naseem Zahra2
ABSTRACT
The antioxidant efficacy of the spinach extract was evaluated by addition in sunflower oil (SFO) as natural antioxidant. Three different concentrations of spinach extract, SFO-800, SFO-1600 and SFO-2400 ppm were supplemented to sunflower oil at 25oC and 60oC along with standard synthetic antioxidants butylated hydroxianisole (BHA), butylated hydroxytoluene (BHT). The stabilization of sunflower oil with spinach extract as natural antioxidant was monitored by evaluating oxidation in terms of peroxide value, free fatty acid value, iodine value, conjugated dienes, conjugated trienes and para-anisidine value. Spinach extract with maximum concentration showed significant effectiveness in oxidative stabilization of the sunflower oil.
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