A new, simplified model for the estimation of polyphenol oxidation potentials based on the number of OH groups

Novak Jovanović, Ivana; Miličević, Ante

doi:10.1515/aiht-2017-68-2988

Abstract

We present a new and simpler regression model for the estimation of the first oxidation potentials (E_p1) of flavonoids based on the number of phenolic, alcoholic, and carboxylic OH groups. In the regression we included the E_p1 of 12 polyphenols (mostly flavonols and catechins) that were measured in our laboratory at pH 3. The model yielded r=0.986 and SE=0.040. Later successive inclusions of previously reported E_p values into the regression model, 7 at pH 3, the model (N=19) yielded r=0.980, SE=0.046 and 19 at pH 7 the model (N=38), yielded r=0.985, SE=0.044.

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A new, simplified model for the estimation of polyphenol oxidation potentials based on the number of OH groups

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