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Changes in Total Polar Compounds, Peroxide Value, Total Phenols and Antioxidant Activity of Various Oils Used in Deep Fat Frying

  • Original Paper
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Journal of the American Oil Chemists' Society

Abstract

In this study, the effect of deep fat frying on oil degradation, total phenols (TP) and total antioxidant activity (TAA) of hazelnut, corn, soybean and olive oils were investigated. Oil degradation and oxidation were monitored by measuring the total polar compounds (TPC) and the peroxide value (PV). The amount of TPC in corn, soybean and olive oils increased significantly with the time increment (p < 0.05). The PV of the oils did not exceed the maximum acceptable limit of 10 mequiv O2/kg after 125 min frying except for hazelnut oil (10.64 mequiv O2/kg). Deep-fat frying did not cause any significant change in the TP of corn oil, soybean oil and olive oil (p < 0.05). A significant decrease in the antioxidant activity was observed after 50 min frying using hazelnut oil and corn oil (p < 0.05). However, the antioxidant activity of soybean oil and olive oil significantly decreased after 75 and 25 min frying, respectively.

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Authors and Affiliations

  1. Department of Food Engineering, Faculty of Engineering, Ege University, 35100, Izmir, Turkey

    Sibel Karakaya & Şebnem Şimşek

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  1. Sibel Karakaya
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  2. Şebnem Şimşek
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Correspondence to Sibel Karakaya.

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Karakaya, S., Şimşek, Ş. Changes in Total Polar Compounds, Peroxide Value, Total Phenols and Antioxidant Activity of Various Oils Used in Deep Fat Frying. J Am Oil Chem Soc 88, 1361–1366 (2011). https://doi.org/10.1007/s11746-011-1788-x

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  • DOI: https://doi.org/10.1007/s11746-011-1788-x

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