文献类型：期刊文献

中文题名：超临界CO_2提取树兰花浸膏

英文题名：Supercritical Carbon Dioxide for Extraction of Aglaia Odorata Concrete

作者：蔡建国[1];周展云[1]

机构：[1]华东理工大学化学工程研究所

年份：1996

卷号：22

期号：2

起止页码：142

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;国家哲学社会科学学术期刊数据库;Scopus;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：超临界流体;二氧化碳;萃取;树兰花浸膏;天然香料

外文关键词：supercritical fluid;carbon dioxide;mass transfer coefficient;extraction;aglaia odorata,concrete

摘要：在３３～５５℃，１０．０～２４．０ＭＰａ范围内测定了超临界ＣＯ_２对树兰花浸膏的溶解度，研究了传质过程的影响因素。树兰花适当粉碎，能有效地提高过程传质速率，提高产品收率；超临界ＣＯ_２中溶质浓度随ＣＯ_２的停留时间增加而增加。上述条件下得到的树兰花浸膏其香气、色泽、得率等优于有机溶剂提取的产品。通过对过程分析后认为多个萃取器串联工艺优于单个萃取器工艺。
The supercritical fluid extraction of aglaia odorata essence from powdered aglaia odorata flower with compressed carbon dioxide under high pressure was conducted and a light yellow concrete with fragrance very close to the original flower was obtained. The said concrete is better in quality than those obtained by conventional extraction with organic solvents.The solubility of aglaia odorata essence in supercritical fluid of cabon dioxide was measured at temperature of 33～55℃ and under pressure of 10.0～24.0MPa.The average loading of aglaia odorata essence in supercritical carbon dioxide increased with the increasing residence time. The mass transfer parameter Ka increased with the decrease of particle size of the raw material and consequently the yield increased. The analysis of residence times showed that the process with multiple extractors connected in series had advantages over the single extractor process.