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- The antioxdant components were found in the ethyl acetate extract from stem of this plant. 从该植物茎乙酸乙酯的分离物中找到具有抗氧化活性的组分。
- And the ethyl acetate was the metastate of intracellular enzyme and had no correlations with the exis. 乙酸乙酯是胞内酶的代谢产物,与乙酸是否存在无关。
- Results:Four compounds isolated from the ethyl acetate extract of the stem bark were ident... 结论:4个化合物均为首次从该植物中得到。
- Methods: HPCE analysis was carried out on the ethyl acetate extracts of 18 Selaginella plants (from 11 species), using MECC separation model. 方法:采用HPCE的MECC的分离模式,对18个卷柏属植物样品的乙酸乙酯提取物进行测定。
- Therefore, the ethyl acetate is the optimal extracting solvent to distill the active compounds from Helianthus tuberosus leaves. 4. 菊芋叶片乙酸乙酯提取物对四种病原真菌抑制效果最为显著,因此乙酸乙酯是菊芋叶片中抑菌活性物质的最佳提取溶剂。
- Result: Both the Ethyl acetate ingredient and the saturated n-Buthyl alcohol ingredient in the herba Saniculae have a good effect on the cough easing action and phlegm removing. 结果:肺经草的醋酸乙酯部位和饱和正丁醇部位均有较好的镇咳和祛痰作用,其中镇咳作用以饱和正丁醇部位为佳,而祛痰作用以醋酸乙酯部位为佳;
- The results of antifungal activity showed that the ethyl acetate extraction and its fraction B, C, D inhibited the growth of Phytophthora infestans strongly. 瑞香狼毒乙酸乙酯萃取物及其分段物流分B、C、D对番茄晚疫病菌有较好的抑制活性,这为瑞香狼毒乙酸乙酯萃取物进一步开发为产品提供了毒理学依据。
- The toxicity of the ethyl acetate extraction of the root of Stellera chamaejasme and the antifungal activity against Phytophthora infestans were studied. 采用急性经口、眼刺激、皮肤试验方法,研究了瑞香狼毒乙酸乙酯萃取物的急性毒性作用,同时以番茄晚疫病菌为供试菌,研究了瑞香狼毒提取物的抑菌活性。
- Different extract of Eclipta alba with different methods have different hepatoprotective effect on injured liver induced by acetaminophen in mice,and the hepatoprotective of the ethyl acetate extract of Eclipta alba is the best. 提示采用不同的提取方法得到的墨旱莲提取物对醋氨酚诱发的小鼠急性肝损伤有不同程度的保护作用 ,其中以乙酸乙酯提取物的效果最显著
- Preparative high-speed counter-current chromatography (HSCCC) was used for the separation of calycosin and formononetin from the ethyl acetate extract of Astragalus membranaceus Bge. 采用高速逆流色谱法(HSCCC),以正己烷氯仿甲醇水组成二相系统作为固定相与流动相,对黄芪的乙酸乙酯粗提物进行了分离纯化。
- In this work, an alternative design, side reactor configuration, is sought and the processes of interest are the production of the ethyl acetate (EtAc) and the butyl acetate (BuAc) via esterification. 本研究以乙酸酯化生成乙酸乙酯及乙酸丁酯之系统为例,探讨利用侧流反应器架构来替代反应性蒸馏。
- As a result of nitrocellulose in need and to join the ethyl acetate ester, such as d, acetic acid. 由于硝化纤维的需给,也给参增酯类,如醋酸乙酯、醋酸丁脂。
- Ethyl acetate(71. 41b)was added to the slurry in the vessel. 把醋酸乙酯71.;4磅加到容器中的浆液内。
- No ethyl acetate and cyclohexane were determined in specimen. 被测样品中未检测出环己烷,检出乙酸乙酯。
- Pharmacological Actions of the Ethyl Acetate Extract from the Root of Rhododendron Molle G. Don 羊踯躅根乙酸乙酯提取物的药理作用
- To introduce the ethyl group into(a compound). 使乙基化把乙基引入(一化合物)
- In benzene or ethyl acetate solution rates increase linearly with methyl methacrylate concentration. 在苯或乙酸乙酯溶液中其衰减速度随甲基丙烯酸甲脂浓度呈直线地增大。
- Remove the ethyl alcohol use calcium carbonate impurity method? 用碳酸钙除去乙醇中的乙酸杂质的方法???
- Solvents of dissolution PS plastic foam are mix solvents of dimethylbenzene, ethyl acetate and n-butyl alcohol. 结果表明:溶解聚苯乙烯的理想溶剂为二甲苯、酸乙酯和正丁醇的混合溶剂。
- STUDY ON CHEMICAL CONSTITUENTS IN ETHYL ACETATE FRACTION OF ALCOHOLIC EXTRACT FROM THE FLOWER OF BOMBAX MALABARICUM DC. 木棉花醇提物中乙酸乙酯溶解组分的化学成分研究。