冬青卫矛种子色素的提取及性质研究

Study on Extraction and Properties of Pigment from Seeds of Euonymus japonicus Thunb

研究了冬青卫矛种子色素的提取条件和理化性质。结果表明,丙酮是冬青卫矛种子色素较好的浸提剂;其最佳提取条件为:料液比1∶10(g∶mL),浸提温度35℃,浸提时间40min,提取率为6.8%。对色素理化性质研究表明:该色素是脂溶性的,对热、添加物、金属离子、还原剂稳定,对酸碱均有较好的稳定性,但耐阳光性、耐氧化性较差;它为类胡萝卜素的天然色素。

Physicochemical properties and extraction conditions of the pigment of seeds of Euonymis japonicus Thunb. were investigated. Results showed that good yield of pigment could obtained by acetone extraction, with fresh material： solvent = 1 ： 10 （g： mL） at 35℃ for 40 min. The pigment is stable against heat, acid-alkali and reducing agent. Under sunlight, degradation of the pigment could be accelerated. Metallic ions, common salt and sucrose had no effect on the tone of pigment. This kind of pigment possesses poor anti-oxidation ability. It is classified to be carotenoids.