乙酸乙酯

超临界CO2和乙酸乙酯提取胆红素

Study on the Extraction of Bilirubin by Supercritical CO_2 Extraction and Ethyl Acetate

试验采用大口径HP-快速GC残留溶剂柱为分离柱，对顶空平衡温度、平衡时间对残留有机溶剂乙酸乙酯测定的影响进行了分析研究。

A wide bore HP-fast GC residual solvent column was performed , and the effects of the equilibrium temperature and equilibrium time on the determination of ethyl acetate were studied .

乙酸乙酯协同超临界CO2结晶分离穿心莲内酯的研究

Supercritical CO_2 Cooperated with Ethyl Acetate Crystallizing Andrographolide

建立了GC测定单硝酸异山梨酯中氯仿、乙酸乙酯残留量的方法。

A method for the determination of chloroform and acetic ether by GC was established .

从10%乙酸乙酯-石油醚部分分离得到甾醇混合物A，经GC-MS分析，分离、鉴定出7个甾醇化合物（1-7）。

Based on GC-MS analysis , seven sterol compounds ( 1 ~ 7 ) were identified .

2-（2-氨基噻唑-4-基）-（z）-2-甲氧亚胺基乙酸乙酯合成方法的改进

The improvement for synthesization method of 2 - ( 2-amido thiazole 4-radicle ) - ( z ) - 2-methoxy imino acetic acetate

ICP-MS法测定高纯石墨中的痕量杂质元素乙酸乙酯萃取&ICP-AES测定高纯金中的痕量杂质

Determination of Impurity Elements in High Purity Graphite by Inductively Coupled Plasma-Mass Spectrometry

4种提取物对玉米象成虫熏蒸活性差异较大，活性大小为印楝油>超临界CO2提取物>乙酸乙酯粗提物>印楝素A。

The fumigant activity of the 4 different neem extracts was neem oil > neem SFE extracts > neem ethyl acetate extracts > azadirachtin A.

方法：微孔滤膜过滤、乙酸乙酯福尔马林分离、Giemsa染色、油镜及相差显微镜观察。

Methods : Micromembrane filtration , ethyl acetate-formalin separation , giemsa stain .

在氟化钾催化下，芳香醛与氰乙酸乙酯发生羰基与活性亚甲基的缩合反应，高收率地得到缩合产物，且只得到E式产物。

The carbonyl methylene condensation reaction of aromatic aldehydes with ethyl cyanoacetate has been carried out smoothly in the presence of potassium fluoride only giving E isomers in high yield .

确定了以气相色谱测定燃料组分含量的方法，即用乙酸乙酯做溶剂，采用标准曲线方法来测定敏化燃料C的含量；

The way to measure fuel ingredient contents by Gas Chromatography technology was determined , i. e. the contents of the sensitive fuel C was tested by means of calibration curve with ethyl acetate as solvent ;

对广东桑桑椹石油醚和乙酸乙酯提取物中的化学成分进行GC-MS分析。

Volatility chemical constituents of the extracts of mulberry ( Moms atropurpurea R. ) by petroleum ether and ethyl acetate were analyzed by GC-MS.

通过GC、MS分离鉴定的玉金香挥发性芳香化合物有乙酸乙酯、乙酸丁酯、3-甲基戊酸乙酯、2-甲基2-丙醇、二乙醚、环己醇。

The main volatile compounds of " Yujinxiang " melon were ethyl acetate , butyl acetate , pentanoic acid , 3-methyl , ethyl ester , 2-methyl-2-propanol , diethylether , cyclohexanol .

方法青蒿经石油醚提取浓缩，浸膏经过硅胶柱，用不同配比的乙酸乙酯洗脱，用TLC法跟踪，UV法检测。

Methods Artemisinin is extracted with petroleum ether and pass column of silica gel and gradient elution with ethyl acetate , then it is tracked with TLC and detected with UV-VIS .

用正交试验法探索以乙酸乙酯提取生姜油树脂的最佳工艺条件，并对产品质量进行考核，用FTIR光谱仪鉴别成分。

The paper studies the best technological conditions of extracting ginger oleoresin with the acetate ester , inspects the quality of a product and appraises the composition with FTIR .

再以D-脯氨酸为原料，先后与乙酰氯、三乙胺和（BOC）2O反应，最后与苯基溴化镁反应，经乙酸乙酯萃取制得目标产物R-二苯基脯氨醇。

Finally the title compound diphenyl [ ( R ) - pyrrolidin-2-yl ] methanol was obtained through reaction with phenyl magnesium bromide and extracting by ethyl acetate .

[结论]虎杖的乙酸乙酯提取物有一定的抗炎作用，其作用机制可能是抑制炎症介质PGE2的合成、抑制细胞免疫及与垂体-肾上腺皮质系统有关。

Inhibiting synthesis of PGE2 and cellular immune function and relating with hypothalamus - pituitary - adrenocortical axis probably are the mechanisms .

有机氯类用乙酸乙酯&环己烷和凝胶净化柱提取净化，石英毛细管气相色谱（配ECD检测器）检测。

Organic chlorine using ethyl acetate-cyclohexane and gel purification column extraction purification , quartz capillary gas chromatography ( ECD allocation ) detection .

以龙眼核为研究材料，利用GC-MS分析了龙眼核乙酸乙酯萃取物的挥发性成分，共分离鉴定出了40个组分。

With longan seed as the study material , volatile constituents of longan seed soluble in ethyl acetate were analyzed with GC - MS , and 40 components were determined .

讨论了表面活性剂（DBS）用量与萃取率的关系，得出了用乙酸乙酯萃取时Ce（NO3）3溶液与DBS用量的最佳比。

The relationship between DBS and the extraction rate was discussed , and the optimum mole of Ce ( NO_3 ) _3 to DBS rate was obtained .

以水玻璃为原料、乙酸乙酯为潜伏酸试剂，采用溶胶凝胶法制备出了高温润滑脂稠化剂&高比表面积超细SiO2粉体。

A kind of lubricating grease thickener , ultrafine silica gel powder with high specific surface area , was prepared taking water glass and ethyl acetate as a latent acid reagent .

实验结果表明：2乙基已硫基乙酸乙酯对钯具有较好的萃取性能，N，N二仲辛基2乙基已硫基乙酰胺与二（2乙基已基）硫醚一样是金的优良萃取剂。

The experimental results show that 2-ethyl hexyl thioacetate is a good extractant for palladium and that N , N-di ( sec-octyl ) 2-ethyl hexyl thioacetamide , as well as di ( 2-ethyl hexyl ) sulfide , is an excellent extractant for gold .

生长曲线法观察发现蛇六谷石油醚萃取物、乙酸乙酯萃取物对人胃癌SGC-7901细胞增殖抑制作用有一定的时间-效应曲线；

Growth curve method showed the extract of petroleum ether and ethyl acetate of Rhizoma Amorphophalli had a time-effect effect on the proliferation of cell SGC-7901 .

采用乙酸乙酯处理样品，甲醇作流动相，测定了口香糖中抗氧化剂BHT含量。

The BHT in chewing gum was treated with ethyl acetate , then analyzed by high performance liquid chromatography with methanol as mobile phase .

结论：苏木乙酸乙酯提取物有明显的抗免疫排斥作用，能减轻移植心肌的病理损伤，其抑制IL-6的分泌可能是发挥免疫抑制作用的途径之一。

Conclusions : sappan acetic ether extract improves the pathologic changes in heart muscles and has an obvious effect on anti-immun rejection , which gives rein to immunodepression probably by reducing the secretion of IL-6 .

结果表明：正丁醇组分清除DPPH自由基能力较强，乙酸乙酯部分抗猪油氧化能力较强；

The results showed that n-butanol extracts has strong scavenging activity to DPPH free radicals while ethyl acetate extracts was better to restrain the lard oxidation .

RMV再沸器装置用于乙酸乙酯蒸发

Application of RMV reboiler for ethyl acetate evaporation

目的：研究香加皮乙酸乙酯提取物（ethylacetateextractfromCortexPeriplocae，CPEAE）诱导人乳腺癌细胞系MCF-7凋亡作用及其作用机制。

Objective : To investigate the effect of ethyl acetate extract from Cortex Periplocae ( CPEAE ) on apoptosis of human breast cancer cell line MCF-7 and to discuss its mechanism .

介绍了以多聚甲醛、间戊二烯为原料在乙酸乙酯中BF3-乙醚溶液催化作用下，进行Diels-Alder反应，合成了2-甲基-5,6-二氢-2H吡喃的方法。

Synthesis of 2-methyl-5,6-dihydro-2H-pyrane from paraformaldehyde and 2,4-pentadiene in ethyl acetate in the presence of BF_3-ethyl ether as catalyst by Diels-Alder reaction was presented .

TLC法选用硅胶G板，展开剂：环已烷-乙酸乙酯（4∶1），测定波长：610nm，参比波长：420nm。

Silica gel plate was used in TLC with developer : cyclohexane ethyl acetate ( 4 ∶ 1 ), scan wavelength : 610 nm , reference wavelength : 420 nm .