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Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/15088
Tipo: Artigo de Periódico
Título: Physicochemical characteristics of ozonated sunflower oils obtained by different procedures
Título(s) alternativo(s): Grasas y Aceites
Autor(es): Veloso, Márcia Cristina da Cunha
Andrade, Jailson Bittencourt de
Díaz, Maritza F.
Sánchez, Y.
Gómez, Magali
Hernández, F.
Pereira, Pedro Afonso de Paula
Autor(es): Veloso, Márcia Cristina da Cunha
Andrade, Jailson Bittencourt de
Díaz, Maritza F.
Sánchez, Y.
Gómez, Magali
Hernández, F.
Pereira, Pedro Afonso de Paula
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.
Palavras-chave: Acidity index
Antimicrobial activity
Elemental Analysis
Gaseous Chromatography
Iodine index
Ozonized sunflower oil
Peroxides index
Tipo de Acesso: Acesso Aberto
URI: http://repositorio.ufba.br/ri/handle/ri/15088
Data do documento: 2012
Aparece nas coleções:Artigo Publicado em Periódico (Química)

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