摘要
采用有机溶剂浸提法,研究了红花羊蹄甲花色素的提取条件和稳定性。结果表明:红花羊蹄甲花色素在530 nm处有最大吸收峰,用体积分数为20%的乙醇溶液提取,料液比为1∶40(g/m L),温度为30℃,提取时间为10 min时,色素的提取率达到较高值。该色素有较好的耐光性和热稳定性,抗氧化性和还原性较差,苯甲酸钠和蔗糖的影响较小,柠檬酸对色素有一定的增色作用。
The extraction and stability of the pigment from Bauhinia blakeana Dunn flower were studied. The result showed that ： the pigments with maximum absorption peak at 530 nm, the volume fraction of 20 % alcohol solution, solid to liquid ratio of 1 ∶ 40（g/m L）, the temperature of 30 ℃, extraction time of 10 min, the extraction rate of pigment was higher. The pigments had good thermol and photic stability,but its antioxidation and anti-reductive were worse. The effects of sodium benzoate and sucrose were relatively small. Citric acid had a certain hyperchromic effect on the pigment.
出处
《食品研究与开发》
CAS
北大核心
2014年第20期46-49,共4页
Food Research and Development
关键词
红花羊蹄甲
色素
提取工艺
稳定性
Bauhinia blakeana Dunn
pigment
extraction technology
stability
