Abstract
(The spectrophotometric determination of phenolic compounds in vegetable extracts by oxidation with copper(II) in nonaqueous media) Oxidation with copper(II) in nonaqueous medium is used for the o-diphenolic compounds chlorogenic acid, rutin, pyrocatechol and epicatechol. A spectrophotometric study of the o-diphenol and o-quinone forms leads to the establishment of two systems of equations for the determination of these compounds. This study complements earlier results. The validity of the method is discussed on the basis of results obtained with Passe-crassane pear extracts.
Published Version
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