Chemical analysis of ozonized theobroma fat |
| |
Authors: | Maritza F Díaz Gómez Goitybell Martínez Téllez Maikel Arteaga Cruz Rafael Garcés Mancheno |
| |
Affiliation: | 1. Department of Ozonized Substances, Ozone Research Center, National Center for Scientific Research, P.O. Box 6412, Havana, Cuba 2. Instituto de la Grasa (Consejo Superior de Investigaciónes Científicas, E-41080, Sevilla, Espa?a
|
| |
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. |
| |
Keywords: | Acid value fatty acids gas-liquid chromatography hydroperoxides iodine value oleic acid ozonized theobroma fat peroxide value |
本文献已被 SpringerLink 等数据库收录! |
|