摘要
研究膜技术分离纯化绿原酸提取液的过程。以金银花为原料,以平均通量、膜截留率、绿原酸透过率为指标,比较3种微滤膜MF1、MF2和MF3,4种超滤膜UF1、UF2、UF3和UF4,及两种反渗透膜RO1和RO2对绿原酸提取液的过滤特性,并研究浓缩液的洗滤对绿原酸截留率的影响。结果表明:MF1、UF1和RO2膜的过滤性能明显优于其他同类型膜,使用MF1-UF1-RO2膜组合处理效果最佳,其绿原酸回收率可达67.75%,产品纯度可达13.21%以上;同时,洗滤可进一步提高处理效果,经间歇洗滤后,MF1膜的绿原酸截留率可由9.54%降低到1.17%,UF2膜的绿原酸截留率可由32.36%降低到20.11%。
In terms of average membrane permeation flux,membrane retention rate and permeation rate of chlorogenic acid,the applications of three microfiltration membranes （MF1,MF2 and MF3）,four ultrafiltration membranes （UF1,UF2,UF3 and UF4） and two reverse osmosis membranes （RO1 and RO2） for the purification of the chlorogenic acid-rich extract from Lonicera japonica Thunb were evaluated. MF1,UF1 and RO2 were found to be even better than other similar membranes. Optimal purification was achieved by the sequential combined use of MF1,UF1 and RO2,and the maximum chlorogenic acid recovery was up to 67.75%,and a product with a purity exceeding 13.21% was obtained. Additionally,diafiltration could improve the treatment effect,and the retention rate of chlorogenic acid was decreased from 9.54% to 1.17% in MF1 separation and from 32.36% to 20.11% in UF2 separation after intermittent diafiltration.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2010年第20期43-46,共4页
Food Science
基金
黄山市重点科技项目(2009ZN-09)
关键词
金银花
绿原酸
膜技术
超滤
Lonicera japonica Thunb
chlorogenic acid
membrane technology
ultrafiltration
