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Methods for the determination of cyclopropenoid fatty acids: VIII. The HBr titration method applied to small samples

  • Technical
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Journal of the American Oil Chemists’ Society

Abstract

A method is described for the determination of cyclopropenoid fatty acids in small samples of refined and crude glyceride oils and methyl esters. Approximately 0.5 g of cottonseed oil is titrated with HBr-HOAc by a stepwise procedure at 3 C and 55 C after removal of interfering substances by adsorption on activated alumina. Side reactions occurring to the extent of 15% during the titration were uniform and highly reproducible, permitting application of a correction factor. A procedure is given for preparing methyl esters on a small scale to determine the cyclopropenoid content of highly oxidized oils.

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References

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Authors and Affiliations

  1. Southern Regional Research Laboratory, 70119, New Orleans, Louisiana

    L. E. Brown

Authors
  1. L. E. Brown
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Additional information

The So. Utiliz. Res. Dev. Div., ARS, USDA.

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Cite this article

Brown, L.E. Methods for the determination of cyclopropenoid fatty acids: VIII. The HBr titration method applied to small samples. J Am Oil Chem Soc 46, 654–656 (1969). https://doi.org/10.1007/BF02540622

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  • DOI: https://doi.org/10.1007/BF02540622

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