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. 2020 Jan 6;25(1):225. doi: 10.3390/molecules25010225

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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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Relative concentration (quantified by HPLC at 520 nm) of the anthocyanins in the extract during shelf-life at different temperatures (4 °C, 25 °C and 37 °C, citric buffer pH = 3, 50 mM) (A) Cyanidin-3-O-glucoside, (B) Plargonidin-3-O-rutinoside, (C) Pelargonidin-3-O-malonylglucoside, (D) Pelargonidin-3-O-glucoside, (E) 5-Pyranopelargonidin-3-O-glucoside. * Error bars represent standard error (n = 2), the lines represent a fit to first-order kinetics. * Small letters near the regression line represent significant differences (p < 0.05), according to the colors in the legend.