1) countercurrent extraction
反流提取，逆流萃取
2) countercurrent extraction
逆流萃取
1.
With five-stage countercurrent extraction at ambient temperature,extraction yield of magnesium and calcium is 72.
2左右;相比1∶1;常温五级逆流萃取镁、钙的萃取率分别为72。
2.
An analytical method for determination of tetramethylpyrazine (TMP) in ligusticum chuanxiong hort by RP HPLC coupled with countercurrent extraction used for the preconcentration of trace TMP was established.
采用逆流萃取与反相高效液相色谱相结合的方法 ,富集并测定了川芎中川芎嗪的含量。
3) counter-flow extraction
逆流萃取
1.
In order to remove impurity of small polarity,the supernatant solution was extracted with chloroform by counter-flow extraction(flow velocity 40 mL/min).
离心,取上清液用氯仿以40 mL/m in流速逆流萃取,除去小极性杂质。
4) counter-current extraction
逆流萃取
1.
004 0 mol/L after six-stage counter-current extraction; while the phase ratio (VO/VA) of the stripping at 1.
针对P350逆流萃取分离草酸钴沉淀母液中草酸和盐酸的可行性,探讨其萃取机理,考察P350浓度、盐酸浓度、草酸浓度对萃取分配比的影响,设计采用多级逆流萃取草酸并用纯水反萃再生萃取剂。
5) countercurrent extraction
逆流提取
1.
The results showed that the optimal conditions were as follows:countercurrent extraction of 4 levels,pH 9 at 80 ℃,with 1︰30 as the original ratio of material to solvent,and 30 min,20 min,15 min or 10 min as extracting time in respective gradient level.
以水为提取剂对米糠黄酮逆流提取,研究了该工艺中影响黄酮提取率的主要因素,得出了合理的操作参数,即提取温度80℃,提取液pH 9,最初料液比1 g︰30 mL,提取时间逐级为30、20、15和10 min的4级逆流提取,此时黄酮的提取率及原料、溶剂的利用率均最高。
2.
A new method of tea extraction was introduced,and analyzed the process of countercurrent extraction.
介绍了一种茶叶浸提的新方法,并对逆流提取的过程进行了分析。
3.
Objective:There were little lab-scale research on dynamic continuous countercurrent extraction from Traditional Chinese Medicine, so a lab-scale simulated method was put forward.
目的:针对目前极少实验室规模研究中药材多效动态连续逆流提取,提出一种实验室模拟方法,为该种方法的中试化奠定基础。
6) counter-current extraction tower
逆流萃取塔
补充资料：逆流萃取(countercurrentextraction)
【逆流萃取】(countercurrentextraction)萃取分离操作法之一。含有被萃取物的水相及有机相分别从萃取器的两端流入，以相反方向流动，进行连续多次接触分层而达到分离的目的。此法特点是合理使用有机相，分离效果好，特别适用于分配比或分离系数较低的萃取体系，适当增加级数，能达到很好的分离效果和较高行率。广泛应用于工业生产中。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条