Antioxidant activity of C. grandiflora essential oil was reported previously and PF at the concentration of 0.2% was 1.63
(El Kalamouni et al., 2010). In case of adding plant extracts at 0.05%, 0.1% and 0.2% concentrations to sunflower oil, the pressure drop was delayed for some period of time, indicating the antioxidative effect of the added substances (Fig. 1). However, the effect of 0.2% EE extract on the stability of sunflower oil during accelerated oxidation was two times lower as compared with 0.02% synthetic antioxidant butylated hydroxytoluene (BHT). Different concentrations of each extract were tested to receive more information about antioxidant properties of C. grandiflora extracts in sunflower oil. In general, all extracts showed oil stabilising effects, which increased with increasing concentration of the extract in the oil.
The effectiveness of the 0.2% concentration of plant extracts
decreases in the following order: EE > ME > SD > AE > FD.
Antioxidant activity of C. grandiflora essential oil was reported previously and PF at the concentration of 0.2% was 1.63(El Kalamouni et al., 2010). In case of adding plant extracts at 0.05%, 0.1% and 0.2% concentrations to sunflower oil, the pressure drop was delayed for some period of time, indicating the antioxidative effect of the added substances (Fig. 1). However, the effect of 0.2% EE extract on the stability of sunflower oil during accelerated oxidation was two times lower as compared with 0.02% synthetic antioxidant butylated hydroxytoluene (BHT). Different concentrations of each extract were tested to receive more information about antioxidant properties of C. grandiflora extracts in sunflower oil. In general, all extracts showed oil stabilising effects, which increased with increasing concentration of the extract in the oil.The effectiveness of the 0.2% concentration of plant extractsdecreases in the following order: EE > ME > SD > AE > FD.
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