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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/).
Retention times and accurate masses observed for four selected phenolic compounds in the kernels (C), hulls (C1), and press residue (C2) extracts compared to retention time and accurate mass of standard compounds.