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Oxidation of Olive Oils during Microwave and Conventional Heating for Fast Food Preparation

Author

Listed:
  • E. Abd El-Moneim Mahmoud
  • J. Dostálová

    (Department of Food Chemistry and Analysis, Institute of Chemical Technology in Prague, Czech Republic)

  • J. Pokorný

    (Department of Food Chemistry and Analysis, Institute of Chemical Technology in Prague, Czech Republic)

  • D. Lukešová

    (Department of Food Chemistry and Analysis, Institute of Chemical Technology in Prague, Czech Republic)

  • M. Doležal

    (Department of Food Chemistry and Analysis, Institute of Chemical Technology in Prague, Czech Republic)

Abstract

The oxidation stability of extra virgin and refined olive oils produced in different countries were studied under different conditions of microwave heating (microwave oven Electrolux, 2450 MHz, 500 W) and conventional heating (200°C). Oils were heated in a microwave oven and in a conventional oven for 0, 3, 6, 9, 12, 15, 20, 25, and 30 minutes. The evaluated parameters were peroxide value, content of conjugated dienes, conjugated trienes (determined by absorbance at 233 nm and 274 nm, respectively), and fatty acid composition by GC. During microwave and conventional heating peroxide values and contents of dienoic compounds differed significantly between control and the heated samples. The microwave treatment did not produce significantly greater amount of oxidation products than traditional heating.

Suggested Citation

  • E. Abd El-Moneim Mahmoud & J. Dostálová & J. Pokorný & D. Lukešová & M. Doležal, 2009. "Oxidation of Olive Oils during Microwave and Conventional Heating for Fast Food Preparation," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 27(SpecialIs), pages 173-177.
    • Handle: RePEc:caa:jnlcjf:v:27:y:2009:i:specialissue1:id:963-cjfs
    DOI: 10.17221/963-CJFS
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    References listed on IDEAS

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    1. Jana Dostálová & Pavel Hanzlík & Zuzana Réblová & Jan Pokorný, 2005. "Oxidative changes of vegetable oils during microwave heating," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 23(6), pages 230-239.
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