Journal of the American Oil Chemists' Society

, Volume 83, Issue 11, pp 943–946

Chemical analysis of ozonized theobroma fat

  • Maritza F. Díaz Gómez
  • Goitybell Martínez Téllez
  • Maikel Arteaga Cruz
  • Rafael Garcés Mancheno
Article

DOI: 10.1007/s11746-006-5050-x

Cite this article as:
Díaz Gómez, M.F., Téllez, G.M., Cruz, M.A. et al. J Amer Oil Chem Soc (2006) 83: 943. doi:10.1007/s11746-006-5050-x

Abstract

Ozonized theobroma fat is used as raw material in the manufacture of pessaries and cosmetic creams. Ozonization of theobroma fat with water was carried out at different applied ozone dosages, and the resultant PV, acid value, iodine value, total hydroperoxide content, and FA content were determined. PV and total hydroperoxide content showed a notable increase with applied ozone dosage up to 35.7 mg/g. Acid value varied slightly from 4.1 to 9.9 mg KOH/g, and the iodine value fell to zero. PV and total hydroperoxide content increased slightly with a higher applied ozone dosage. The comparison of total hydroperoxide measurement using ferrous oxidation in xylenol orange assay and traditional iodometric assay for PV determination showed a significant linear correlation. Small amounts of oleic acid were found in ozonized theobroma fat samples with iodine value equaling zero, which demonstrated that iodine value determination is an inexact assay. During ozonization of theobroma fat, an increase in acid value of 18.9-fold with respect to the initial value was observed owing to decomposition of peroxide.

Key Words

Acid value fatty acids gas-liquid chromatography hydroperoxides iodine value oleic acid ozonized theobroma fat peroxide value 

Copyright information

© AOCS Press 2006

Authors and Affiliations

  • Maritza F. Díaz Gómez
    • 1
  • Goitybell Martínez Téllez
    • 1
  • Maikel Arteaga Cruz
    • 1
  • Rafael Garcés Mancheno
    • 2
  1. 1.Department of Ozonized Substances, Ozone Research CenterNational Center for Scientific ResearchHavanaCuba
  2. 2.Instituto de la Grasa (Consejo Superior de Investigaciónes CientíficasSevillaEspaña

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