摘要
采用分子蒸馏法精制乙二醇葡萄糖苷，高效液相测定其组成，并用色差计测定糖苷的颜色。通过控制适宜的蒸馏温度和压力等条件，得到较为满意的蒸馏效果。当进料速率60～80mL／h，刮膜器转速100～110r／min，预热温度80℃，较优化的工艺条件为：蒸馏温度70℃，压力200Pa和蒸馏温度90℃，压力500Pa，此时，乙二醇葡萄糖苷的含量分别为85．92％和85．26％。分子蒸馏和减压蒸馏的糖苷颜色相差很大。
With the method of molecular distillation, the glycol glucosides was refined. The composition was tested by HPLC method and the color of the glycol glucosides was determined using colorimeters. The satisfying separation results were acquired by controlling suitable conditions including distillation temperature, operating pressure, etc. Feed rate of 60-80mL/h ,rotor speed of 100-110r/min, the optimal technological conditions were as follows., distillation temperature of 70℃, operating pressure of 200Pa, or distillation temperature of 90℃, operating pressure of 500Pa. Under these conditions, the content of glycol glucosides were 8.5.92% and 8.5.26% respectively. There is a significant difference on the color of glycol glucosides between molecular distillation and vacuum distillation.
出处
《食品工业科技》
CAS
CSCD
北大核心
2008年第5期173-175,179,共4页
Science and Technology of Food Industry
基金
“十一五”国家科技支撑计划重大项目(2006BAD05A07)
关键词
分子蒸馏
乙二醇葡萄糖苷
分离
纯化
molecular distillation
glycol glucosides
separation
purification
