Anthocyanins lipophilization recently emerged as an efficient tool to deliver oil-soluble dyes aiming to expand their applications in lipophilic matrices such as cosmetics formulations. Sodium dodecyl sulfate (SDS) micelles were used to solubilize malvidin-3-glucoside derivatives bearing an ester chain derived from dodecanoic and hexanoic fatty acids. Detailed investigations on the kinetic and thermodynamic behavior of the pigments towards pH variations was carried out by means of UV-Vis spectroscopy. It was found that the pH domain of the red flavylium cation is extended in ca 0.3–0.4 pH units. The mole fraction of the quinoidal base at neutral conditions increased by 40% when compared with malvidin-3-glucoside in the same micellar media, which provides a great blue color stabilization. The results presented herein report for the first time the blue color stabilization of these lipophilic anthocyanin bioactives, opening new application fields as novel colorants for lipid-based foods and cosmetics.

花青素的亲脂性最近成为输送油溶性染料的有效工具，旨在扩大其在亲脂性基质（如化妆品配方）中的应用。十二烷基硫酸钠（SDS）胶束用于溶解带有衍生自十二酸和己酸脂肪酸酯链的麦维京3-葡萄糖苷衍生物。通过UV-Vis光谱学对颜料对pH变化的动力学和热力学行为进行了详细研究。发现红色黄酮阳离子的pH域在ca中延伸。pH值为0.3–0.4。与相同胶束介质中的malvidin-3-glucoside相比，中性条件下喹啉碱的摩尔分数增加了40％，提供了很好的蓝色稳定性。本文介绍的结果首次报道了这些亲脂性花色苷生物活性物质的蓝色稳定性，为脂类食品和化妆品的新型着色剂开辟了新的应用领域。