Anthocyanins are water-soluble pigments with limited application in lipophilic matrices such as lipid-based foods and cosmetic formulations. In this work, the liposolubility improvement of cyanidin-3-glucoside (cy3glc) was performed by enzymatic esterification with saturated fatty acids with variable chain lengths, and their thermostabilities were evaluated at different pH values in a lipophilic medium (an aqueous sodium dodecyl sulfate solution) by means of UV–vis spectroscopy. Overall, lipophilic cy3glc derivatives showed improved color stability and lowered sensitivity to thermal degradation than nonmodified cy3glc in an SDS micellar solution between pH 3 and 7.

中文翻译：

---

脂肪酸酶促酰化改善Cyanidin-3-glucoside的颜色稳定性

花青素是水溶性颜料，在脂溶性基质（如脂质类食品和化妆品配方）中的应用有限。在这项工作中，通过用可变链长的饱和脂肪酸进行酶促酯化反应来改善花青素-3-葡萄糖苷（cy3glc）的脂溶性，并在亲脂性介质（十二烷基硫酸钠水溶液）中，在不同pH值下评估了它们的热稳定性。 ）通过紫外可见光谱。总体而言，在pH 3至7的SDS胶束溶液中，亲脂性cy3glc衍生物比未修饰的cy3glc表现出更高的颜色稳定性和更低的热降解敏感性。