carvone是什么意思   carvone怎么读

carvone单词基本解析：

carvone变化用词：

carvone英英释义：

carvone中文词源：

carvone用法和例句：

carvone

Each oil has a distinct and characteristic odor, yet carvone is the major component in both oils!

两种油各自有种与众不同的气味，然而香芹酮是这两种油中的主要成分！

You will convert the carvone to its semicarbazone for use in a polarimetric analysis.

为了作旋光度分析，你将会把香芹酮转变为缩胺基脲。

2.From the gas chromatography, report the percentages of limonene and carvone in your original sample and in the fractions following distillation.

从气相色层析分析中，回报在你的原样品和通过蒸馏所得的馏份中所含柠檬烯和香芹酮的百分含量。

It is amazing that the difference in odor is attributable solely to a difference in chirality of the carvone in the two oils.

令人吃惊的是气味的不同完全是由于两种油中香芹酮手性的不同而引起的。

You will separate the carvone from the higher-boiling and lower-boiling impurities (such as limonene), via a vacuum distillation.

你将会通过真空蒸馏法，把香芹酮中较高沸点和较低沸点的杂质(如柠檬烯)分离开。

You will obtain infrared spectra of the carvone and limonene fractions and interpret the results.

你将得到香芹酮和柠檬烯馏份的红外光谱图。并且要解析其结果。

You will use gas chromatography and refractometry to check the purity of your distillate and to estimate the relative concentrations of limonene and carvone in the oil.

你将用到气相色层分析和折射仪去检测你的蒸馏物的纯度。从而估计在油中柠檬烯和香芹酮的相对浓度。

3.Which isomer of carvone do you have?

你所得到的香芹酮异构体是哪一种呢？

Which isomer of carvone do you have? Is it R or S? How do you know? What is the association between the chirality and the odor of the carvone isomers?

你所得到的香芹酮异构体是哪一种呢？是R型还是S型呢？你是怎样知道的？香芹酮异构体的气味和手性之间有什么联系呢？

However, carvone thermally decomposes at higher temperatures;

可是，香芹酮在较高的温度下会发生热分解；

Thus, for both (+)- and (-)- carvone, the infrared, nuclear magnetic resonance spectra, the gas chromatographic retention times, the refractive indexes, and the boiling points should be identical.

因此，(+)-和(-)-的香芹酮的红外，核磁共振光谱，气相色层分析的保留时间，折光率和沸点应该是完全相同的。

5. (a) Which features in the IR spectrum can be assigned to limonene? to carvone? Identify as many functional groups as you can in each sample.

在红外光谱图中有哪些特征可以归属于是柠檬烯的？哪些可以归属于香芹酮？尽可能确认出在你的样品中出现的官能团。

Keywords industrial dipentene;p-menthane;p-cymene;carvone;polyester resins;

工业双戊烯;对孟烷;对伞花烃;香芹酮;聚酯树脂;

When carvone begins to distill, the condensation can be seen inside the thermometer adapter, thus the progress of carvone distillation can be readily monitored.

当香芹酮开始蒸馏时，在温度计转接器内可看到有冷凝，因此能够容易地监察香芹酮的蒸馏过程。

Save a small portion (5 drops) of your original essential oil sample and of the distilled limonene and carvone fractions for Gas Chromatography and Refractive Indexes measurements.

留下一小部份(5滴)的原精油样品和蒸馏过的柠檬烯和香芹酮馏份，作为气相色层分析和折光率的测定用。

Keywords Mentha spicata L.;essential oil;carvone;GC/MS;

留兰香;挥发油;气相色谱质谱;香芹酮;

Keywords spearmint oil;refine : carvone;carbonyl group number;

留兰香油;精制;香芹酮;羰基值;

Refine of Spearmint Oil and Analysis to the Content of Carvone

留兰香油的精制及香芹酮含量的分析

c) Can you use IR spectroscopy to distinguish between (R)- carvone and (S)- carvone?

能用红外光谱区分(R)-香芹酮和(S)-香芹酮吗？

The major component of these oils is carvone.

这些油中的主要成份是香芹酮。

By measuring the refractive index of the original oil, limonene and carvone fractions, you can estimate the purity of the respective fractions and the composition of the original oil.

通过测量原油，柠檬烯和香芹酮馏份的折光率，你可以估计一下原油的组份和各个馏份的纯度。

What is the association between the chirality and the odor of the carvone isomers?

香芹酮异构体的气味和手性之间有什麽联系呢？

Carvone: Ketone found in caraway, dill and spearmint oils.

香芹酮：在葛缕子，莳萝和绿薄荷油中发现的酮类物质。