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Turkish Journal of Fisheries and Aquatic Sciences 2016, Vol 16, Num, 3     (Pages: 729-737)

Antioxidant Effects of Wild Pistacia (P. atlantica), Rosemary (Rosmarinus officinalis L.) and Green Tea Extracts on the Lipid Oxidation Rate of Fish Oil-in-Water Emulsions

Parastoo Pourashouri 1 ,Bahareh Shabanpour 1 ,Zeinab Noori Hashem Abad 1 ,Sajad Zahiri 1

1 Gorgan University of Agricultural Sciences and Natural Resources, Department of Fisheries, Gorgan, Iran DOI : 10.4194/1303-2712-v16_3_27 Viewed : 10175 - Downloaded : 4599 The objective of this study was to investigate the effectiveness of plant extracts on the oxidative stability of n-3 rich fish oil emulsion. The antioxidant efficiency, water extracts of wild pistachio, rosemary and green tea, were evaluated in 10 % fish oil-in-water emulsions. The fish oil emulsion was oxidatively unstable as measured by fatty acid profile, peroxide and pAnisidine values and sensory analysis. Pre-emulsification of the fish oil with fish gelatin in water offered some protection towards oxidation, but addition of the extracts (200, 500 and 700 ppm) significantly reduced oxidative changes. Higher concentration of the extracts showed an antioxidant tendency in 10% fish oil-in-water emulsion. Moreover, the results of the experiment demonstrated the potential of wild pistachio leaf extract as a useful antioxidant. Keywords : Green tea, wild pistachio, oil-in-water emulsion, oxidative stability, fish gelatin