Physicochemical characteristics of ozonated sunflower oils obtained by different procedures

M. F. Díaz; Y. Sánchez; M. Gómez; F. Hernández; M. C. da C. Veloso; P. A. de P. Pereira; A. S. Mangrich; J. B. de Andrade

doi:10.3989/gya.073212

Authors

M. F. Díaz Ozone Research Center
Y. Sánchez Ozone Research Center
M. Gómez Ozone Research Center
F. Hernández Pharmacy and Food Institute from Havana
M. C. da C. Veloso Chemical Institute-Federal University of Bahia
P. A. de P. Pereira Chemical Institute-Federal University of Bahia
A. S. Mangrich Chemical Institute-Federal University of Parana
J. B. de Andrade Chemical Institute-Federal University of Bahia

DOI:

https://doi.org/10.3989/gya.073212

Keywords:

Acidity index, Antimicrobial activity, Elemental Analysis, Gaseous Chromatography, Iodine index, Ozonized sunflower oil, Peroxides index

Abstract

Two ozonation procedures for sunflower oils at different applied ozone dosages were carried out. Ozone was obtained from medicinal oxygen and from air. Peroxide, acidity, and iodine indexes, along with density, viscosity and antimicrobial activity were determined. The fatty acid compositions of the samples were analyzed using GC. The content of oxygen was determined using an elemental analysis. Electronic Paramagnetic Resonance was used to measure the organic free radicals. The reactions were achieved up to peroxide index values of 658 and 675 mmolequiv kg^–1 using medicinal oxygen and air for 5 and 8 hours, respectively. The samples of ozonized sunflower oil did not present organic free radicals, which is a very important issue if these oils are to be used as drugs. The ozonation reaction is more rapid with medicinal oxygen (5 hours) than with air (8 hours). Ozonized sunflower oil with oxygen as an ozone source was obtained with high potential for antimicrobial activity.

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