Oxidative stability of soybean oil contrasting for linolenic acid content during processing

Authors

  • Eleonice Moreira Santos Universidade Federal de Viçosa
  • Solange Aparecida Paula Departamento de Química e Exatas, Universidade Estadual do Sudoeste da Bahia
  • Everaldo Gonçalves de Barros Universidade Federal de Viçosa
  • Marco Túlio Coelho Silva Universidade Federal de Viçosa
  • Luiz Antonio dos Santos Dias Universidade Federal de Viçosa

DOI:

https://doi.org/10.22481/exon.v5i2.20432

Keywords:

lipid oxidation, refining process, thermal oxidation and photooxidation

Abstract

The content of polyunsaturated fatty acids is directly linked to the oil oxidative stability. This work evaluated the oxidative stability of oil samples obtained from soybean isolines contrasting for linolenic acid content in the refining stages, through oxidative accelerated tests by increased temperature and light. The isolines used have, on average, 4.63 (LLA) and 11.73% (NLA) of linolenic acid. At the end of the extraction process the isoline LLA showed an oil yield of 6% higher than NLA. In the accelerated oxidation test by using increased temperature the oils from LLA isoline, from the various refining steps, were significantly more stable than those of NLA isoline. The accelerated oxidation test by using increased light exposure showed a decrease of the oil oxidative stability from both isolines, independent of the linolenic acid content.

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Published

2014-12-30

How to Cite

SANTOS, Eleonice Moreira; PAULA, Solange Aparecida; BARROS, Everaldo Gonçalves de; SILVA, Marco Túlio Coelho; DIAS, Luiz Antonio dos Santos. Oxidative stability of soybean oil contrasting for linolenic acid content during processing. Exatas Online, [S. l.], v. 5, n. 2, p. 19–27, 2014. DOI: 10.22481/exon.v5i2.20432. Disponível em: https://periodicos2.uesb.br/exon/article/view/20432. Acesso em: 2 oct. 2026.