Development and Validation of a Simple RP-HPLC-PDA Method for Determination of 18 Polyphenols in Grape Juice and Red Wine.


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Vural N. , Yalçınçıray Ö.

Türk Tarım - Gıda Bilim ve Teknoloji Dergisi, vol.9, no.8, pp.1599-1605, 2021 (National Refreed University Journal)

  • Publication Type: Article / Article
  • Volume: 9 Issue: 8
  • Publication Date: 2021
  • Doi Number: 10.24925/turjaf.v9i8.1599-1605.4586
  • Title of Journal : Türk Tarım - Gıda Bilim ve Teknoloji Dergisi
  • Page Numbers: pp.1599-1605

Abstract

According to the trend of a healthy eating awareness trend, having a potential benefit on human health, some polyphenols like flavonoids, resveratrol, hydroxy-stilbenes, and phenolic acids are in the spotlight. Grapes, and one of the most widespread grape product wine; are among the best sources of these polyphenols. In this study, a highly specific, susceptible, and easy chromatographic method was brought out and validated to determine 18 polyphenols in grape and red wines. For this aim, an HPLC-PDA was used, and the separation was accomplished on an RP-ODS4 column. The method comprised of a mobile gradient phase consisting of A solution (acetic acid in water, pH 2.00) and a mixture of the solution A – acetonitrile (20:80, v/v), at a flow rate of 1.0 ml/min, and PDA detection was carried out at 260,280, 320, and 360 nm. According to the results, it can be said that the program indicated good linearity over the range of 1-40 mg L −1 of phenolics with r 2>0.99. The recovery of the 18 phenolics ranges from 83.17% to 119.88% at red wines and 88.20% to 117.83% at grape juices. The method is well precise, with the relative standard deviation (RSD) of the average concentration of the phenolic compounds are ranges from 1.22% to 2.02% at red wines and 1.01% to 2.56% at grape juices.