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. 2019 Mar 2;24(5):882. doi: 10.3390/molecules24050882

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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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3D-surface plots of the Box–Behnken design to represent the influence of: (a) Solvent composition and cycle on the total phenolic compounds; (b) solvent composition-temperature on the total phenolic compounds; (c) cycle-ratio on the total phenolic compounds; (d) solvent composition-pH on the total anthocyanins.