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Determination of total and water-insoluble-combined lactic acid in lactic acid modified fatty glycerides

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Journal of the American Oil Chemists’ Society

Abstract

Analytical methods for the determination of total and water insoluble combined lactic acid in lactic acid modified fatty glycerides are described. The acids are liberated from their esters by saponification. Lactic acid is determined by simple acid-base titration after removal of fatty acids via liquid-liquid extraction. Water soluble constituents are extracted from a dichloro-methane solution of the esters with 5% aqueous sodium sulfate prior to determination of water insoluble lactic acid. Methods are rapid, simple, and suitable for use in a plant control laboratory. Extension of the procedure provides for the simultaneous determination of fatty acid and glycerine on a single sample.

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Authors and Affiliations

  1. Chemical Research Department, Atlas Chemical Industries, Inc., Wilmington, Delaware

    R. S. Stetzler & T. B. Andress

Authors
  1. R. S. Stetzler
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  2. T. B. Andress
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Stetzler, R.S., Andress, T.B. Determination of total and water-insoluble-combined lactic acid in lactic acid modified fatty glycerides. J Am Oil Chem Soc 39, 509–511 (1962). https://doi.org/10.1007/BF02672538

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  • DOI: https://doi.org/10.1007/BF02672538

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