The Impact of pH and Solvent on the Extraction of Anthocyanin Pigments

Abstract

As photosensitizers, anthocyanins offer the primary advantages of being readily accessible, completely biodegradable, and generally environmentally benign. To improve the energy conversion efficiency of natural photosensitizers, the analyst employed a range of strategies, including acidification, co-pigmentation, blending, and other methods, which yielded satisfactory results. This article discusses the pH dependency of dyes and the effects of various solvents on the economical extraction of anthocyanin colors. Anthocyanin dyes are also naturally used as photosensitizers in dye-sensitized solar cells (DSSCs), which ultimately balances out their intrinsic usage. At low pH levels, anthocyanins are stable and more soluble in CH₃OH and C₂H₅OH solvents.