Photoisomerized compositions of anthocyanins and methods of making and use thereof

Abstract

Disclosed herein are photoisomerized compositions comprising anthocyanins and methods of making an use thereof. For example, disclosed herein are methods of photoisomerizing a composition, the methods comprising: irradiating a composition comprising an anthocyanin dissolved in a solvent solution with UV light; wherein at least a portion of the anthocyanin is present as a trans isomer before the irradiation; wherein the solvent solution comprises ethanol and water in a ratio of ethanol to water (volume/volume) of 99:1 to 70:30; thereby converting at least a portion of trans isomer to a cis isomer via photoisomerization to produce a photoisomerized composition. In some examples, the photoisomerized composition has a more intense and stable blue color at pH 8 relative to the composition before irradiation.

Dependencies are inferred from the claim text.