【摘要】 采用0.1%HCl-70%乙醇(体积分数)水溶液从可食的雀梅藤果实中提取食用色素,并对该色素的理化性质和稳定性进行了研究。结果表明:色素得率为8.2%,色素易溶于水、甲醇、乙醇等极性溶剂,其颜色随pH值变化而变化,pH值≤3时,其最大吸收波长为530 nm,有较好的耐热、耐光性,但耐碱、耐氧化还原性能差,葡萄糖、蔗糖、柠檬酸、食盐、苯甲酸、Mg2+、Zn2+、K+、Ca2+、Na+均使其色微减,Al3+、Fe3+、Cu2+使其变色;初步急性毒性实验中小白鼠无异常表现。更多还原

【Abstract】 The pigment was extracted from the edible fruit of Sageretia theezans Brongn by using 0.1% HCl-70% EtOH(volume fraction)water solution,and its stability,physicochemical properties were studied.The results showed that the yield of the pigment was 8.2%.The pigment has good solublility in polar solvents such as water,methanol and ethanol,and its colour changes with pH value.When pH value≤3,its λmax was 530nm,with considerable heat and light stabilities,but its alkaline resistance and redox resistance were poor.Its color can be slightly weakened by glucose,sucrose,citric acid,table salt,phenylformic acid,Mg2+,Zn2+,K+,Ca2+,Na+,and the colour can be changed by Al3+,Fe3+,Cu2+.The white mouse hadn′t showed any unusual behaviour in the preliminary acute toxicity test.更多还原