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Further observations on the 2-thiobarbituric acid method for the measurement of oxidative rancidity

  • Technical
  • Published:
Journal of the American Oil Chemists’ Society

Abstract

The validity of the 2-thiobarbituric acid (TBA) procedure for the measurement of oxidative rancidity by the determination of malonaldehyde (MA) as the red pigment with an absorption max at 532 mµ has been questioned [J. Am. Oil Chem. Soc.39, 34 (1962)]. Side reactions were reported to occur yielding degradation of TBA to products which absorb at the same wave length as the TBA-MA complex and at 450 mµ.

Results reported in the present paper stress the importance of reagent purification. Little or no decomposition of TBA to produce interfering colors was found after heating with acids, oxidizing agents or hydroperoxides.

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Authors and Affiliations

  1. Department of Food Science and Technology, Oregon State University, Corvallis, Oregon

    T. C. Yu & R. O. Sinnhuber

Authors
  1. T. C. Yu
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  2. R. O. Sinnhuber
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Additional information

Technical Paper No. 1669, of the Oregon Agricultural Experiment Station. Research supported in part by the National Institutes of Health RG 7006.

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Yu, T.C., Sinnhuber, R.O. Further observations on the 2-thiobarbituric acid method for the measurement of oxidative rancidity. J Am Oil Chem Soc 41, 540–543 (1964). https://doi.org/10.1007/BF02898128

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  • DOI: https://doi.org/10.1007/BF02898128

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