银杏叶提取物的超临界流体干燥实验研究  

Experimental Investigation of Supercritical Fluid Drying of Ginkgo Biloba Leaves Extract

作　　者：黄立新[1] 廖传华[2] 王成章[1] 方向[2] 张彩虹[1] 张述军 Arun S Mujumdar 

机构地区：[1]中国林业科学研究院林产化学工业研究所新技术所,南京210042 [2]南京工业大学,南京210009 [3]金州公司 [4]National University of Singapore,singapore119260

出　　处：《干燥技术与设备》2009年第6期258-260,265,共4页

基　　金：人事部回国人员资助重点项目;国家林业局948项目(2006-4-114);中央级公益性科研院所基本科研业务费专项(CAFINT2008K01和CAFINT2008K05)

摘　　要：银杏叶提取物是一种天然保健产品。传统的冷冻干燥或者喷雾干燥对于保健品品质均有不同程度的破坏。通过L2555正交试验设计,研究银杏叶提取物超临界流体干燥中超临界流体的压力、温度、流量以及干燥时间和提取物初始固含量等参数对于产品中残留溶剂的影响;根据正交试验结果分析得出了优化的工艺参数,并根据优化参数的校核试验验证了所得的相关结论。Ginkgo biloba leaves extracts （GBE） were found to be very helpful to human being＇s health. The traditional freeze drying and spray drying were often harmful to labile effective contents, i.e., flavonoid. In this paper, supercritical fluid CO2 drying （SCFD） technology was used to dry GBE into powder product. The L^s orthogonal test was designed to investigate the effects of the parameters on the residual solvent content in the dried product. Various factors affecting the process, including supercritical fluid pressure, temperature, flow rate, drying time and concentration of extracts, were selected in 25 tests. The optimal operating parameters are in the order of SCF pressure, its temperature, feed solid concentration, SCF flow rate and running time. The verification test validated the optimal conditions.

关 键 词：银杏叶提取物 喷雾干燥 超临界流体干燥 

分 类 号：TQ028.6[化学工程]