金银忍冬果实色素的提取及稳定性研究

以金银忍冬果实为原料，研究其色素的提取工艺及稳定性。结果表明：金银忍冬果实色素易溶于乙醇、丙酮、石油醚，是脂溶性色素。质量分数为95％的乙醇是最佳提取剂。酸、碱、光、热稳定性较好。60℃条件下色素的提取效果最佳。Na^＋、Al^3＋、Mn^2＋、Zn^2＋金属离子对色素的稳定性无影响，且有不同程度的护色作用。而Fe^3＋、Cu^2＋对色素的影响较大。氧化还原剂、食品添加剂对其稳定性影响较小。

Research on Extraction and Stability of the Pigment of the Lonicera Maackii Fruit

Using the lonicera maackii fruit as raw material, extraction and stability of its pigment were studied. The results showed that：the pigment of the lonicera maackii fruit is easy to be dissolved into alcochol, acetone and light petroleum. It is a fat-soluble pigment, mass fraction 95% alcochol is the best extracting agent. The pigment has the better acid, base, light and heat stability. When the temperature is at 60℃, extractive effect is the best. The metal ions of Na^＋、Al^3＋、Mn^2＋、Zn^2＋ have no effect on the pigment stability and they can protect the color of pigment in varying degrees. The ions of Fe^3＋,Cu^2＋ have great effect on the pigment. The reductant-oxidant and food additives have less effect on stability.