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. 2021 Sep 30;7(4):160. doi: 10.3390/gels7040160

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© 2021 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 (https://creativecommons.org/licenses/by/4.0/).

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UV/vis spectra of (a) fermented anthocyanin extract at different pH (+ NaOH/H₂SO₄), (b) color of fresh anthocyanin extract at different pH (+ NaOH/H₂SO₄), and (c) color of fresh anthocyanin extract at different pH (specific buffer).