<論文>各種ポリフェノールの定量法の比較

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Measured values, sensitivities, and reactive specificity of some quantitative analyses for polyphenolic compounds were compared in this study. Measured values obtained as total polyphenols in Folin-Ciocalteu method, Ferrous tartrate method, and L o wenthal method were positively correlated with the numbers of phenolic hydroxyl groups in the structures of 11 kinds of polyphenolic compounds used in the present investigation. The values of the compounds containing o-diphenol were relatively high in Folin-Ciocalteu method and those of the compounds containing gallyl or galloyl group were high in Ferrous tartrate method. L o wenthal method showed low sensitivities in almost of the polyphenols. As to the analyses for total flavanols, high measured values were obtained in the cases of the compounds containing m-diphenol in both of Vanillin-HCl method and HCl-formalin method. Sensitivity of l-Butanol-HCl method were low in all of compounds. Measured values in the analysis for the reductans showed the same reactive specificity as those in the analyses for total polyphenols. The contents of total polyphenols, total flavanols, and reductants in the four kinds of tea leave extracts were varied according to the standard polyphenolic compounds used. These results indicate that it is very important to select not only adequate analytical methods but also appropriate standards for the determination of total contents of polyphenols and flavanols in plant samples.
沼津工業高等専門学校の論文
2000-01-31

<論文>各種ポリフェノールの定量法の比較

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