查询词典 constituents

The main chemical constituents of the essential oil of peppermint are identical,which is 1-menthone,1-menthol, menthlacetate, menthofuan,α-pinene,β-pinene, limonene, 1, 8-cineole, 3-octanol, isomenthone, pulegone, neomenthol, caryophyllene, sabinenehydrate, germacrene-D, piperitol, viridiflorol,isomenthone, and others;but their contents are different,hence the aroma quality among the essential oil is greatly different.

它们的主要组成成分相同，均为薄荷酮、薄荷呋喃、乙酸薄荷酯、薄荷醇、α-蒎烯、β-蒎烯、苧烯、1、8-桉叶油素、3-辛醇、水烩烯、异薄荷酮、新薄荷醇、石竹烯、胡薄荷酮、大根香叶烯、胡椒醇、绿花醇等，但其含量有较大的差别，从而使精油香气品质产生了很大的差异。

Objective: To study the chemical constituents of Tibetan medicine Caryopteris toroetii.

中文摘要：目的：研究藏药小叶毛球莸的化学成分。

The main constituents C_1 and C_2 of Gentaminycin were evaluated in per centage by nuclear magnetic resonance spectrometry and comparison of pre - sa - turation water suppression with routine spectrometry of GTM matetrial drug was made to evaluate and analyse the GTM injections produced by 7 different factories.

用核磁共振谱(~1H-NMR)对庆大霉素的主要组分C_1和C_2的百分含量进行了测定，用预饱和抑制水峰谱与GTM原料药的常规谱进行了比较，并对7个厂家的GTM注射液进行了测定分析。

A study on bisflavone constituents and chemotaxonomy of Cephalotaxus.

三尖杉属植物的双黄酮成分及其化学分类的研究。

A study on bisflavone constituents and chemotaxonomy of Cephalotaxus.

标题 三尖杉属植物的双黄酮成分及其化学分类的研究。

Objective: To investigate the chemical constituents of Chaenomeles speciosa.

目的：研究皱皮木瓜的化学成分。

Methods: The chemical constituents of Chaenomeles speciosa was analyzed by various chromatographic methods. The structures of the compounds were identified based on physicochemical properties and spectral data.

利用多种色谱法对皱皮木瓜的化学成分进行系统研究，并根据理化性质和波谱数据进行结构鉴定。

Results: Sixty-one constituents were firstly isolated and identified from the fruits of 3 species of Chaenomeles. Forty compounds in Chaenomeles lagenaria, thirty-four compounds in Xuan mugua (C.lagenaria from Xuanzhou) and 23 compounds in C.sinensis were isolated and identified respectively.

结果：从3种木瓜的乙醚提取部位中首次分离与鉴定出61个化合物，其中皱皮木瓜 40个化合物，宣木瓜(C.lagenaria 产自安徽宣州) 34个化合物，光皮木瓜 23个化合物。

Our study was to analyze the chemical constituents of volatile oil from Chenopodium ambrosioides L.. The volatile oil was extracted by steam distilation.

采用水蒸气蒸馏法提取土荆芥挥发油，应用GC-MS对挥发油成分进行分析鉴定，鉴定了挥发油中的12种化学成分。

RESULTS The water extractive and cos tunolide could inhibit intestine peristalsis of the mice; each team had an obvious cholagogic effect compared with control team and alcohol extractive was stronger than water extractive, costunolide and dehydrocostuslactone were very strong in cholagogic and could be regarded as the main cholagogic constituents.

结果 ig给木香水提物 1.4 g/kg，4.2 g/kg）和木香烃内酯（9 mg/kg，27 mg/kg）对小白鼠的肠蠕动具有抑制作用；熊去氧胆酸（100 mg/kg ）、木香水提物组（540 mg/kg）、木香醇提物组（480 mg/kg）、木香烃内酯组（100 mg/k g）、去氢木香内酯组（100 mg/kg）与对照组相比，各组均有明显的利胆作用，且醇提物要比水提物作用强，木香烃内酯、去氢木香内酯利胆作用很强，可视为木香中的主要利胆成分。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。