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. 2019 Nov 6;9(11):146. doi: 10.3390/membranes9110146

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Chromatograms of the characterization of grape marc extracts obtained from an ultrasound assisted extraction (UAE). (a) HPLC-DAD-ESI-MS/MS analysis; (b) ultra-performance liquid chromatography (UPLC) analysis.