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. 2020 Aug 3;9(8):696. doi: 10.3390/antiox9080696

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© 2020 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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FTIR spectra of polyphenols-loading materials in comparison with the free extracts: MM@MCM-COOH(a); MM@MCM-CN(b); MM@MCM-SO₃H(c); MM@MCM-SH(d); MM@MCM-41E(e); MM(Conv)(f).