醋酸乙酯

Objective:To study the antitumor effects of Sorbaria sorbifolia ethyl acetate extract and its mechanism.

目的：探讨珍珠梅醋酸乙酯提取物对S180荷瘤小鼠体内的肿瘤抑制作用及机理。

ConclusionThere is good cytotoxicity of the ethyl acetate and acetone extracts from Alocasia macrorrhiza to tumor cells, and no obvious acute toxicity has been observed.

结论醋酸乙酯和丙酮提取物有较好的细胞毒活性，没有明显的急性毒性，这两部分有较好的抗肿瘤前景。

ConclusionThere is good cytotoxicity of the ethyl acetate and acetone extracts from Alocasia macrorrhiza to tumor cells, and no obvious acute toxicity has been observed. Therefore these two parts have good anti-tumor prospects.

结论醋酸乙酯和丙酮提取物有较好的细胞毒活性，没有明显的急性毒性，这两部分有较好的抗肿瘤前景。

The obvious acute toxicities were not observed for the ethyl acetate and acetone extracts of Alocasia macrorrhiza under the treatment doses of 60g·kg-1 and 36.5 g·kg-1 respectively.

海芋的丙酮和醋酸乙酯提取物分别在60 g·kg-1和36.5 g·kg-1的给药剂量下没有显示明显的急性毒性。

ResultsThe IC50 of the ethyl acetate extract from Alocasia macrorrhiza to A549, B16, BGC-823 were 94.6, 541.9,629.5 μg·ml-1 respectively,and those of the acetone extract from Alocasia macrorrhiza to A549 and B16 40.9,438.0 μg·ml-1 respectively. But there were quite large dosages of the IC50 of the extracts of cyclohexane, benzine, ethyl alcohol and water from Alocasia macrorrhiza to all kinds of cell lines.

结果海芋醋酸乙酯提取物对A549，B16，BGC-823的IC50分别为94.6， 541.9，629.5 μg·ml-1，丙酮提取物对A549，B16的IC50分别为40.9，438.0 μg·ml-1，而海芋的环己烷，石油醚，乙醇，水提物对各种细胞株的IC50剂量都比较大。

Outlined solvents like, butanone ethyl acetate, acetone, methybenzene ethanol are quick drying solvents.

以上列举的溶剂中象醋酸乙酯、丁酮、丙酮、甲苯、乙醇都属快干溶剂。

Main business scope: polyformaldehyde methylal methanol sodium nitrite sodium sulfide protopine xylene glacial acetic acid soda ash Ethyl acetate ion-exchange membrane caustic soda Chloromethane AEO-9 polyethylene glycol and other major raw materials and products.

多聚甲醛甲醇甲缩醛亚硝酸钠硫化碱片碱二甲苯纯碱冰醋酸醋酸乙酯离子膜烧碱 AEO-9 氯甲烷聚乙二醇等主要原料和产品。

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。

ConclusionIt is the first time that the petroleum ether extract and ethyl acetate extract of Nervilia foadii Schltr. are proved to be the effective anticancer fractions in vitro.

结论首次确定了青天葵的石油醚和醋酸乙酯部分是体外抗肿瘤作用的有效部位。

Objective:To study the anti tumor effects of Sorbaria sorbifolia ethyl acetate extract and its mechanism.

目的：探讨珍珠梅醋酸乙酯提取物对S180荷瘤小鼠体内的肿瘤抑制作用及机理。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。