盐角草红色素的微波提取工艺及其特性研究

Microwave Extraction and Properties of Red Pigment from Salicornia europeaea

摘要:

探讨微波萃取盐角草天然红色素的微波提取方法，研究了该色素的稳定性。结果表明微波萃取的最佳工艺为：用50%的乙醇在料液比为1:50（m/V）的条件下70 ℃浸取1 h后用700 W的微波处理9 min效果最好。色素稳定性研究表明色素在50~60 ℃内稳定，对光稳定性好，大多数食品添加剂对色素稳定性影响不大，对还原剂Na2SO3的耐受能力较差，对氧化剂H2O2的耐受能力较强。

Abstract:

The microwave extraction of the natural red pigment in the Salicornia europeaea and the pigment stability were investigated. The optimal conditions of microwave extraction were as follows: microwave power of 700 W, extraction time of 9 min, extraction temperature of 70 ℃, 50%(v/v) of ethanol, the ratio of material to ethanol of 1:50 (g/ml), the extraction temperature of 70 ℃, the extraction time of 1h, the microwave power of 700 W and the time of microwave treatment of 9 min. The achieved pigment showed high light stability and thermal stability within 50~60 ℃. The food additives showed little effects on the stability of the pigment. Besides, the pigment showed poor Na2SO3 tolerance capability but high H2O2 tolerance capability.