Traditional Chinese medicine extraction technology to extract herb gynostemma process
extraction to extract the gynostemma process experiment, dry gynostemma herbs smash into meal, weighing 100 g round bottom flask, repeatedly reflux extraction with 70% ethanol, extract, merger with rotary evaporator concentrate after decompression drying, drying with 1000 ml hot water dissolves, joined with the volume of petroleum ether extract 3 times, use water solution with the volume of water saturation of n-butyl alcohol extraction, repeatedly until n-butyl alcohol layer colorless, combination of n-butyl alcohol extract, with a rotary evaporator concentrate after decompression drying, for a quick.
in the industrial use of centrifugal extraction mechanism of gynostemma extract phase equilibrium set up fast, easy to implement series single stage or multistage countercurrent flow or wrong washing and extraction, high mass transfer efficiency and grade efficiency approaching 100%, stop not to undermine the established after concentration distribution at different levels, can at any time at all levels of sampling, facilitate testing.
. cwl - use M new centrifugal extraction machine gynostemma in the traditional Chinese medicine extraction, single-stage extraction rate was 95%, the secondary cross-flow extraction rate was 99%, the secondary counter-current extraction rate was 98%, the cross-flow extraction rate is higher than counter-current extraction rate, and single-stage and two-stage extraction rate can reach the requirement of industrial production.
[refs 1] Dong Yurui. Gynostemma total saponins extraction technology research [ J] 。 中国中医信息杂志,2007,14 ( 6) : 48 - 49.
( 2] Deng Meilin tian-xiang wu. Ethanol extraction of total saponins research [gynostemma superfine powder J] 。 Brewing in China, 2009205-52 - 55.