西红花色素的提取及稳定性研究

Study on the Extraction and Stability of Pigments from Crocus sativus L.

利用有机溶剂提取西红花色素,并考察了食品添加剂、金属离子、碳水化合物、pH值、光照及温度等对其稳定性的影响。结果表明:西红花色素溶液在强光、碱性环境和高温下不稳定,在酸性、中性环境、葡萄糖溶液、蔗糖溶液、大部分金属离子和食品添加剂溶液中表现稳定,但溶液中的Fe^3+对该色素有较大影响,淀粉溶液对西红花色素具有增色作用。

The pigments are extracted from Crocus sativus L.by organic solvent,and the effects of food additives,metal ions,carbohydrates,pH values,light and temperatures on the stability of pigments are investigated.The results indicate that the pigment solution is unstable in strong light,alkaline environment and high temperature,and it is stable in acidic,neutral environment,glucose solution,sucrose solution,most metal ions and food additive solution.However,Fe^3+in the solution has great influence on the pigments,and the starch solution has enhancement effect on the pigments from Crocus sativus L.