摘要
以胭脂虫干体为原料,通过粉碎、浸提、树脂吸附、解吸浓缩、冷冻干燥等得到胭脂虫红色素粉末。以色素的吸光度值为指标,通过比较提取率的高低,对提取温度、提取时间、料液比、提取次数等因素进行了研究,确定胭脂虫红色素的最佳提取工艺条件为:提取温度85℃、浸提时间2h、料液比为1:60、提取次数为2次。通过静态吸附和解吸实验确定最佳的纯化树脂为S-8大孔吸附树脂。再通过静态和动态吸附、解吸实验对吸附率和解吸率进行研究,确定胭脂虫红色素的最佳纯化工艺条件为:上柱浓度为0.750×15、流速为2BV/h、pH为4;洗脱剂为pH2的60%的乙醇、洗脱流速为2BV/h。通过最佳提取工艺提取、最佳纯化工艺纯化、冷冻干燥得到色素粉末,其色价为102,胭脂虫红酸的含量达到了70.93%。
Dried cochineal was selected as raw material,and the cochineal red pigment powder was obtained after smashing,extracting,adsorption,desorption and drying.The absorbency and extraction rate were chosen to analyze the red pigment.The optimal extraction condition of the pigment was studied.Four factors were selected to decide the optimal extraction condition,the optimal condition was as follows:extracting time 120min,extracting temperature 85℃,solvent ratio 1 :60,extracting times Twice.The optimal purification...
出处
《中国食品添加剂》
CAS
北大核心
2009年第2期96-102,共7页
China Food Additives
关键词
胭脂虫干体
色素
提取
纯化
cochineal
pigment
extraction
purification
