摘要
研究了应用微波技术从植物紫荆(CercischinensisBunge)的花中提取色素的新工艺并确定了最佳工艺条件:原料0.2000g紫荆干花,提取剂95%乙醇,料液比1∶50(g∶mL),微波功率648W,提取时间30s,提取次数2次。最佳工艺条件下色素的提取率为92.1%,产率为9.48%,色价E(1%,549nm)为22.3。与溶剂浸提法相比,微波法提取紫荆花色素的每次提取时间由24h减小为30s,提取率从90.2%增加到92.1%。
As a new method of extraction,microwave was used to extract pigment from flowers of Cercis chinensis Bunge.The extraction processes were investigated to obtain the optimal conditions as follows:dry flower 0.200 0 g,(solvent) 95% alcohol,ratio of raw material to solvent 1∶50(g∶mL),microwave power 648 W,extraction time 30 s,twice of extraction.Results are:extraction rate 92.1%,yield 9.48% and absorbance E(1%,549 nm) 53.3.Compared with normal solvent extraction,microwave extraction time could be reduced from 24 h to 30 s,and the extraction yield (increase) from 90.2% to 92.1%.
出处
《林产化学与工业》
EI
CAS
CSCD
2004年第2期80-82,共3页
Chemistry and Industry of Forest Products
关键词
微波提取
紫荆花
色素
microwave extraction
Cercis chinensis Bunge
pigment
