摘要
本论文采用超临界CO2萃取技术萃取杜仲叶总黄酮,对萃取温度、时间、压力和夹带剂用量四因素进行研究,并采用紫外分光光度法对萃取物中的总黄酮进行定量分析。确定了超临界CO2萃取杜仲总黄酮的最佳工艺条件为:温度为45℃、时间为2.5h、压力为30MPa、夹带剂用量为3.5ml/g。黄酮提取率为73.26%,产品纯度为19.82%。
Study on the supercritical CO2 technology was used to extract flavonids from Eucommia ulmoides leaves, the effects of pressure, temperature, dosage of chemical preparation and time on extractabilities of flavone were studied, we have found the best craft-extractin, moreover, and the technical of microcapsulization was used to eliminate the bitterness of flavone. As a result, the best craft conditions are： extraction temperature 45℃, extraction pressure 30.0MPa, extraction time 2.5h, dosage of chemical preparation 3.5ml/g, and the extraction rate is 73.26%.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2006年第12期553-555,共3页
Food Science
关键词
超临界CO2萃取
杜仲叶
总黄酮
supercritical CO2 extraction
Eucommia ulmoides leaves
flavonids
