石油醚

Object: The antimicrobial effects of the water, 60% alcohol, 90% alcohol extract and petroleum ether, ethyl acetate, n-butanol components from Pomegranate rind against 3 kind of pathogenesis bacterial and 14 kind of epiphyte were accomplished.

目的：对石榴皮的水、60%乙醇、90%乙醇提取物以及石油醚、乙酸乙酯、正丁醇萃取物对3种细菌和14种真菌的体外抗菌试验进行了研究。

The preparation process of equisetum pratense total alkaloid includes the following steps: coarse pulverizing equisetum pratense to obtain rough powder, methyl alcohol percolation to obtain percolate, recovering methyl alcohol, concentrating, degreasing by means of petroleum ether, alkalifying concentrate, CHCl3 extracting, soda lye washing, neutral water washing, recovering CHCl3 to obtain rough alkaloid, adsorption by using silica gel column, eluting, recovering solvent so as to obtain refined EPR.

该发明是通过两个步骤来实现的：第一步，提取草问荆总碱，流程：草问荆粗粉――渗漉液――浓缩液(析胶、石油醚脱脂、氨水碱化)――碱化浓缩液(CHCl3萃取)――CHCl3层――CHCl3液(回收CHCl3)――粗生物碱――吸附硅胶柱――精致EPR。第二步，选择实验试剂、仪器、用小鼠作为实验对象，进行中枢神经系统实验，研究作用及作用机制。

It is the first time that the petroleum ether extract and ethyl acetate extract of Nerviliafoadii.

首次确定了青天葵的石油醚和乙酸乙酯部位是体内抗肿瘤作用的有效部位。

Objective To study the antitumor effects of the petroleum ether extract from Stellera Chamaejasˉmel L.

目的研究瑞香狼毒石油醚提取物的抗肿瘤作用。

For the determination of organochlorine and pyrethroid pesticide residues, the sample was extract with petroleum ether.

有机氯和拟除虫菊酯类农药残留测定中，利用石油醚对样品进行提取。

The extract of petroleum ether of Rhizoma Amorphophalli is possibly one of antineoplastic parts of the plant.

蛇六谷石油醚萃取物可能是该药抗肿瘤的有效部位之一。

ResultsPetroleum ether extract and ethyl acetate extract both had some anticancer effects in vitro.

结果青天葵石油醚和醋酸乙酯部位具有一定的体外抗肿瘤作用。

The main aim of this paper is research the technology that combine enzyme treatment and petroleum ether to extract the Jatropha curcas L.

本论文旨在对酶处理与石油醚浸出相结合提取麻疯树籽油脂工艺的研究。

Objective To explore antibacterial effects of alchohol extract and petroleum ether extract from Herba Euphorbia humifusa on common oral pathogenic bacteria in vitro.

目的 探讨地锦草乙醇提取物和石油醚提取物对口腔病原菌的体外抗茵作用。

Firstly, the petroleum ether extract was examined by GC-MS. The result shows that there are over twenty ingredients in it, almost of which are hydrocarbon while a few are ketone, hydroxybenzene, and amine etc.

首先对石油醚的提取物进行了GC-MS检测，检测结果发现其中有二十多种成分，其中多数为烃类，也还含有少量的酮、酚、胺等化合物。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。