%0 Journal Article
%T Physicochemical characteristics of ozonated sunflower oils obtained by different procedures
%A D赤az
%A M. F.
%A S芍nchez
%A Y.
%A G車mez
%A M.
%A Hern芍ndez
%A F.
%J Grasas y Aceites
%D 2012
%I Consejo Superior de Investigaciones Cient赤ficas
%R 10.3989/gya.073212
%X 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每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. Se ha aplicado dos procedimientos de ozonizaci車n a aceites de girasol a diferentes dosis de ozono, obteniendo el ozono a partir de ox赤geno medicinal y de aire. Se han determinado los 赤ndices de per車xido, yodo y acidez conjuntamente con la densidad, viscosidad y la actividad antimicrobiana. La composici車n de 芍cidos grasos fue analizada mediante CG. El contenido de ox赤geno fue determinado mediante An芍lisis Elemental. Se utiliz車 la resonancia paramagn谷tica electr車nica para medir los radicales libres org芍nicos. Las reacciones fueron realizadas hasta valores de 赤ndice de per車xidos de 658 y 675 mmol-equiv kg每1 usando ox赤geno medicinal y aire durante 5 y 8 horas, respectivamente. Las muestras de aceite de girasol ozonizado no presentaron radicales libres org芍nicos, lo cual es muy importante en el caso de que estos aceites sean utilizados en medicina. La reacci車n de ozonizaci車n es m芍s r芍pida cuando se utiliza ox赤geno medicinal (5 horas) que el aire (8 horas). El aceite de girasol ozonizado con ox赤geno como fuente de ozono present車 mayor potencial de actividad antimicrobiana.
%K Acidity index
%K Antimicrobial activity
%K Elemental Analysis
%K Gaseous Chromatography
%K Iodine index
%K Ozonized sunflower oil
%K Peroxides index
%K Aceite de girasol ozonizado
%K Actividad antimicrobiana
%K An芍lisis Elemental
%K Cromatograf赤a Gaseosa
%K 赤ndice de acidez
%K 赤ndice de per車xidos
%K 赤ndice de Yodo
%U http://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1399/1395