在氟化钾催化下,芳香醛与氰乙酸乙酯发生克脑文格尔缩合反应,得到高产率的缩合产物。
The knoevenagel condensation of aromatic aldehydes with ethyl cyanoacetate proceeds smoothly in the presence of potassium fluoride giving products in high yield.
不会再乙酸乙酯混合物里增长!
再用乙酸乙酯萃取花生蛋白。
这是借由加入己烷至乙酸乙酯中来完成。
结果表明,乙酸乙酯是最理想的有机溶剂。
It was found that ethyl acetate was the optimal organic solvent.
三是演出的淬火、乙酸乙酯碳酸氢钠水溶液。
C. The quench is performed with aqueous sodium hydrogen carbonate and ethyl acetate.
结论鬼针草乙酸乙酯提取物有显著的降糖活性。
Conclusion Bidens ethyl acetate extract has a significant hypoglycemic activity.
乙酸乙酯萃取茶多酚是茶多酚工业生产中的关键技术。
Extracting Tea Polyphenols (TP) with acetoacetic ester is a Key technique in TP Indus - trial production.
乙酸乙酯是性能优良的溶剂、萃取剂和重要的化工原料。
Ethyl acetate is an excellent solvent and extractant and is an important chemical material too.
乙酸乙酯不仅作两相反应的溶剂,而且也提供还原剂乙醇。
Ethyl acetate displayed not only as a solvent for two-phase reaction, but also as a pro-reducing (agent).
像醋气味是由乙酸造成的,而指甲油味是由乙酸乙酯形成的。
A vinegary smell is caused by acetic acid, while a nail polish aroma reflects the formation of ethyl acetate.
结果鬼针草乙酸乙酯提取物能显著降低糖尿病大鼠的血糖值。
Results Bidens ethyl acetate extract could significantly reduce the blood glucose levels in diabetic rats.
蓝靛果乙酸乙酯提取物是一种具优势的消化性溃疡治疗药物。
EELC is a suit medicine of gastric ulcer because it possesses the inhibitory effect of gastric ulcer protective.
以决明子为原料,分别用乙酸乙酯、正丁醇和水制备粗提取物。
Juemingzi extracts were prepared with ethyl acetate, n-butanol and water respectively.
以硅酸钠、乙酸乙酯、聚丙烯酰胺等为主要成分制备出亲水膜层。
Hydrophilic membranes were prepared with key components of sodium silicate, acetic ether, polyacrylamide, etc.
结果表明异汉逊酵母产酒精和乙酸乙酯的能力与呼吸代谢有一定关系。
The result shows that the capacity of producing alcohol and ethyl acetate is related to respiration to some extent.
方法:以乙酸乙酯为溶剂用超声震荡提取法提取吴茱萸碱和吴茱萸次碱。
METHODS: Evodiamine and rutaecarpine were extracted with the solvent ethyl acetate and the ultrasonic extractor.
结论补骨脂乙酸乙酯提取物和乙醇提取物均可促进成骨细胞分化、增殖。
Conclusion Ethyl acetate extract and alcohol extract from Fructus Psoraleae can stimulate the differentiation and proliferation of osteoblasts in vitro.
研究了乙酰乙酸乙酯(AA)不同程度的水解对B-Z振荡反应的影响。
The influence of the hydrolysis of acetacetic ether (AA) on B-Z oscillating reaction is studied.
由于酒精氧化而形成于葡萄酒中的物质的总括(主要是醋酸和乙酸乙酯)。
Volatile acidity (VA) General term for the substances in wine that are formed by the oxidation of alcohol (mainly acetic acid and ethyl acetate).
其中乙酸乙酯组分和丙酮组分活性尤其突出,表明有高活性成分富集其中。
Among all components, the activities of Ethyl acetate and Acetone extracts were excellent marked by the active components highly concentrated.
以不同体积比的乙醇和乙酸乙酯分级溶解方法,分离出了几种不同分子量的腐殖酸。
Several humic acids of different molecular weight were fractionated by means of fractional solution containing various volume ratios of ethanol and ethyl acetate.
芦荟苷在甲醇溶剂中不稳定,甲醇不适宜做芦荟苷标准样的溶剂,宜改用乙酸乙酯。
Aloin is unstable when dissolved in methanol, acetyl acetate was appropriate for use as the solvent in standard solution.
在上述研究的基础上,应用固定化酵母利用酒厂酒尾产酯,获得了高产乙酸乙酯的结果。
On the basis of the previous research, high yield of ethyl acetate is obtained from fermentation of wine tailings with immobilized yeast.
从灵芝发酵菌丝体中制备了乙酸乙酯提取物,实验了其对三种典型细菌生长的抑制作用。
The ethyl acetate extract from mycelium of Ganoderma lucidum was prepared, and its antibacterial activity on three typical bacteria was tested.
方法注射链脲佐菌素建立大鼠糖尿病模型,观察鬼针草乙酸乙酯提取物对血糖值的影响。
Methods Diabetic rat models were produced by injection of streptozotocin. The impact of Bidens ethyl acetate extract on blood glucose level was observed.
结果蒲黄及炮制品的乙酸乙酯部位、正丁醇部位、总黄酮部位可明显缩短小鼠凝血时间。
RESULT the acetic ether portion, n-butanol portion and total flavonoids portion of Pollen Typhae could markedly shorten the coagulate time in mice.
利用本方法研究乙酸乙酯皂化反应和蔗糖水解反应体系,实验结果验证了本方法的准确性。
The saponification of ethyl acetate and the hydrolysis reaction system of sucrose have been studied, the accuracy of this method is verified by the experimental re.
利用本方法研究乙酸乙酯皂化反应和蔗糖水解反应体系,实验结果验证了本方法的准确性。
The saponification of ethyl acetate and the hydrolysis reaction system of sucrose have been studied, the accuracy of this method is verified by the experimental re.
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