乙酸乙酯

The analysis methods for the determination of microor trace elements in high moisture jellyfish were developed. The fatty acid compositions indifderent parts of fresh jellyfish were determined by GC/MS method. Thirty-five fatty acids wereidentified, and most of them were found in R. esculentum jellyfish for the first time. Especially,two unusual very long chain polyunsaturated fatty acids that were never detected in the otherjellyfish also were determined. Amino acids were abundant in R. esculentum jellyfish, especiallycontaining sulfur amino acids, and could be supplied for human diet. The polysaccharide inumbrella part of jellyfish was composed of glucose, galactose and uronic acid, and its molecularweight was 40,000, but the polysaccharide of the oral arms part consisted of glucose, mannose andglycuronic acid, and its molecular weight was 43,000. Above-mentioned data were never reported.The ethanolic extract of oral arms part of jellyfish were extracted by different polar solvents(petroleum ether, acetic ether, n-butanol), and antibacterial activity was tested to these extracts byfour species of terricolous pathogenic bacilli and three species of botanic pathogenic fungi. Theresult demonstrated that the petroleum ether extract had certain bactericidal activity for twospecies of pathogenic bacilli, and n-butanol extract had certain inhibited activity on apple rotpathogenic fungus.

建立了高含水量的海蜇产品中微量、痕量元素成分测定的分析方法；采用 GC/MS 方法测定了新鲜海蜇不同部位的脂肪酸组成，共鉴定出 35 种脂肪酸，其中大多数脂肪酸是首次在海蜇中被检测到，尤其是两种不常见的 C24：5 超长链多不饱和脂肪酸的分析和鉴定在其它水母种属中也从未见报道；海蜇三个部位中氨基酸成分齐全，含量丰富，含硫氨基酸含量较高，可与其它食物蛋白质的氨基酸互补；其中海蜇皮多糖是由葡萄糖、半乳糖和糖醛酸组成，分子量为 40，000，海蜇头多糖是由葡萄糖、甘露糖和糖醛酸组成，分子量为 43，000，以上工作均未见报道；利用石油醚、乙酸乙酯、正丁醇三种不同极性溶剂分别萃取海蜇头乙醇浸提物，用纸碟法和生长速率法分别对四株陆源病原菌和三株植物病原真菌进行了抑菌实验，结果表明海蜇头石油醚提取物和正丁醇提取物具有一定的抑菌活性。

To adopt system menstruum deal with fermented products of mycelium from Tremella aurantialba, then mycelium from tremella aurantialba was studied with the clotting time of the thrombogen, the whole blood clotting time in mice and thrombosis experiment in mice.

采用系统溶剂法处理金耳菌丝发酵物，得乙酸乙酯部位、正丁醇部位及水溶部位，通过凝血酶原实验、小鼠凝血实验及小鼠体内血栓形成实验等来筛选具有抗凝血作用的有效部位。

Ethyl Acetate: A sweet, vinegary smell that often accompanies acetic acid.

乙酸乙酯：一种美好的酸味，经常伴随着醋酸一起出现。

Then the extracts of petroleum ether,chloroform,ethyl acetate,n-butanol and distilled water were extracted by solvent extraction,and whose acaricidal activity were detected by killing Psorptes communis cuniculi in vitro.

用石油醚、氯仿、乙酸乙酯、正丁醇、蒸馏水五种溶剂对丁香进行部位提取，采用离体杀螨试验观察各部位提取物的杀螨活性。

The exact of petroleum ether was the acaricidal active site of Eungenia caryophyllata. 3.Isolation, purification and identification of compounds with acaricidal activity in Eugenia Caryphyllata: The exact of petroleum ether was separated into 6 parts by silica gel column chromatography with gradually increasing polarity of petroleum ether: ethyl acetate. The part C was demonstrated to be the most effective part by acaricidal activity test in vitro,and the time for it to kill all experimental mites was about 20 min.

丁香杀螨活性成分的追踪分离、纯化与结构鉴定：采用硅胶柱层析法，以石油醚：乙酸乙酯溶剂系统梯度洗脱，对丁香石油醚提取物进行分离，得到A~F 等6 段混合物，离体杀螨试验发现，C 段混合物具有突出的杀螨活性，50%浓度平均15min可杀死全部供试螨虫。

Methods A DB-WAX capillary column was used with FID as detector and acetoacetate as the solvent.

采用 DB-WAX 毛细管柱， FID 检测器，乙酸乙酯为溶剂。

However, in the setting of an elevated serum anion gap acidosis, other anions such as acetoacetate or lactate are present, thus rendering the urinary anion gap a useless test.

但是在阴离子间隙增大的酸中毒中存在其它的阴离子，如酮酸酸中毒时的乙酸乙酯或乳酸酸中毒时的乳酸。这时检测尿阴离子间隙就没有什么意义了。

However, in the setting of an elevated serum anion gap acidosis, other anions such as acetoacetate or lactate are present, thus render ing the urinary anion gap a useless test.

但是在阴离子间隙增大的酸中毒中存在其它的阴离子，如酮酸酸中毒时的乙酸乙酯或乳酸酸中毒时的乳酸。这时检测尿阴离子间隙就没有什么意义了。

Extracting Tea Polyphenolswith acetoacetic ester is a Key technique in TP indus- trial production.

乙酸乙酯萃取茶多酚是茶多酚工业生产中的关键技术。

The higher concentration of ethyl acetate (50 mg/l) observed in the cider made by the traditional system in 2001 could be explained by the dominance of aciculate yeast in the course of the fermentation.

在2001用传统作业方法生产萍果汁中观察到旳更高浓度旳乙酸乙酯(50 mg/l)现象，能用发酵其间针状旳酵母旳优势来解释。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。