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. 2021 Apr 16;88(5):398–404. doi: 10.1055/a-1379-4553

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The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. ( https://creativecommons.org/licenses/by-nc-nd/4.0/ )

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.

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Fig. 2 — HPLC chromatogram of the polymeric proanthocyanidins (PACs) purified from EGb 761 after acidic hydrolysis detected at 530 nm. The major hydrolysis product is delphinidin eluting at 10.0 min, with some minor fraction of cyanidin (eluting at 11.1 min) and pelargonidin (eluting at 12.2 min). The elution peak at 12.0 min could not yet be characterized.