Resumo

ROJANO, Benjamín A; GAVIRIA, Carlos A  e  SAEZ, Jairo A. ANTIOXIDANT ACTIVITY DETERMINATION IN A LIPIDIC PEROXIDATION MODEL OF BUTTER INHIBITED BY ISOESPINTANOL. Vitae [online]. 2008, vol.15, n.2, pp.212-218. ISSN 0121-4004.

The antioxidant activity (Φ) is defined as the slope of the simple linear regression of f₀/f_i against the concentration µM, in an inhibition model of lipid peroxidation of butter at 60° C, where f_i is the concentration effect of isoespintanol and f₀ is the control. It is found that the formation of: hydroperoxides (peroxide value of PV) and the most oxidized species reactive to thiobarbituric acid (TBARS), were similarly delayed by isoespintanol (Φ_TBARS = 9.46x10^-5 ± 1.33x10^-5 and ΦPV = 9.41x10^-5 ± 1.62x10^-5). Likewise, the butilhidroxy toluene and isoespintanol inhibit the oxidative process of butter in a 28.0 and 23.3% at concentrations of 2380.9 and 3809.5 µ M respectively.

Palavras-chave : Lipid peroxidation; butter; isoespintanol; peroxide value; TBA value.

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