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[Antioxidant activity of vegetable oils with various omega-6/omega-3 fatty acids ratio].

Biomeditsinskaia khimiia (2010-08-11)
D A Guseva, N N Prozorovskaia, A V Shironin, M A Sanzhakov, N M Evteeva, I F Rusina, O T Kasaikina
ABSTRACT

Antioxidant activity and the oxidative stability were investigated in flax, sesame, silybum oils and oils with different omega-6/omega-3 fatty acid ratio. The content of antioxidants (AO) in crude oils and their reactivity towards peroxyl radicals were studied using kinetic method for addition of oil in a model reaction of cumol oxidation. There were correlations between PUFA/omega-9 and thermal stability (50 degrees C); between gamma-tocopherol content and resistantance to oxidative changes after storage at (10 +/- 2) degrees C for 6 months.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Cumene, 98%
Supelco
Cumene, Pharmaceutical Secondary Standard; Certified Reference Material
Supelco
Cumene, PESTANAL®
Supelco
Cumene solution, certified reference material, 5000 μg/mL in methanol