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. 2019 Nov 25;8(12):586. doi: 10.3390/antiox8120586

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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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High-performance liquid chromatography (HPLC) traces of the SPW extract obtained with the DES, under optimal conditions (C_DES = 55% (w/v), R_L/S = 60 mL g⁻¹, S_S = 800 rpm, T = 50 °C). The upper and lower traces were monitored at 360 and 520 nm, respectively. Peak assignment: 1, kaempferol 3-O-sophoroside 7-O-glucoside; 2, quercetin 3-O-sophoroside; 3, kaempferol 3-O-sophoroside; 4, kaempferol 3-O-glucoside; 5, delphinidin 3,5-di-O-glucoside; 6, petunidin 3,5-di-O-glucoside; 7, delphinidin 3-O-glucoside.