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. 2019 Aug 15;24(16):2965. doi: 10.3390/molecules24162965

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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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HPLC-DAD profile of ethanol extracts of propolis (1: protocatechuic acid, 2: (+)-catechin, 3: 4-hydroxybenzoic acid, 4: caffeic acid, 5: vanillic acid, 6: syringic acid, 7: p-coumaric acid, 8: ferulic acid, 9: ellagic acid dehydrate, 10: quercetin-3-O-rutinoside, 11: cichoric acid, 12: apiin, 13: dimethyl caffeic acid, 14: cinnamyl alcohol, 15: cinnamic acid, 16: 4-methoxycinnamic acid, 17: quercetin, 18: pinobanksin, 19: apigenin, 20: kaempferol, 21: isorhamnetin, 22: chrysin, 23: pinocembrin, 24: acacetin, 25: galangin, 26: oroxylin; 27: (+/−)-pinostrobin).