Is the reaction of Anthocyanin to pH reversible? I mean if we increase the pH and get the color change, if we then decrease the pH, the color will be changed back to its original color?
Check https://www.researchgate.net/figure/Chemical-diagram-of-color-changing-anthocyanin-pH-reaction-Under-different-pH-conditions_fig4_301896057
Anthocyanins change color in different pH levels because their molecular structure actually shifts as the pH of the solution they are in changes from acidic to basic and vice versa. This makes these pigments unique compared to other natural colors. https://learn.ddwcolor.com/why-do-anthocyanins-change-color/
Yes, check on this paper
Article Extraction of anthocyanins and polyphenols from black rice (...
Dear Dr Abdolazim Hasseli . See the following useful RG link: Article The Chemical Reactivity of Anthocyanins and Its Consequences...
Kindly check also the following good link: https://etd.ohiolink.edu/apexprod/rws_etd/send_file/send?accession=osu1397748937&disposition=inline
Dear Dr Abdolazim Hasseli,
I also recemmend you to read these two interesting articles (in attached).
Best wishes,
Sabri
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