查询词典 volatile

The content of the volatile compounds reaches highest at 6 months and then decreases. The contents of volatile compounds in M. semimembranosus and M.

而挥发性化合物的含量在6个月达到最高值半膜肌和股二头肌干物质中分别为9240.16μg壬烷·100g~(-1和13227.85 μg壬烷·100g~(-1)，然后含量下降。

Effect of pH on the formation of volatile and semi-volatile substances in the maillard reaction systems of arabinose/cysteine was analyzed and compared by the method of headspace-solid microextraction associated with gas chromatography-mass spectrography.

利用顶空-固相微萃取-气质联用法，分析和比较不同pH条件对阿拉伯糖/半胱氨酸模型体系挥发性风味物质形成的影响。

Especially after primary distillation, the high volatile components of 1-decanol and α-terpineol, which were of the highest relative conten t, were remarkably declined, even could not be found. The volatile constituents were also lost after rectification. Some constituents with weak volatility were lost because of the excipient, cosolvent and filtration.

特别是经初馏后，原药材中两种相对含量最高的强挥发性成分1-癸醇和α-萜品醇在初馏液中含量明显下降，甚至检测不到；重蒸馏过程也使挥发性成分受到破坏；辅料、助溶剂等的加入和滤过环节使挥发性较弱的成分也在一定程度上受到损失。

The function relations of volatile and E and volatile and tiptop temperature of pyrolysis.

根据计算结果，得出挥发分与活化能和最大失重速率峰温的函数关系。

AIM: To study the effect of volatile oils from Boswellia carterii Birdwood on the proliferation and apoptosis in human liver cancer SMMC-7721 cells; METHODS: Effects of proliferation were detected on SMMC-7721 by volatile oils from B.

目的：探讨乳香挥发油体外抑制人肝癌SMMC-7721细胞株增殖及诱导凋亡的作用。

The result indicates that those four resuscitation-inducing aromatic herbs mainly contain volatile oil ,and all contain alicyclic compounds; the volatile oil of Borneolum Syntheticum and Styrax both contain Sesquiterpenes of caryophyllene; as resin herbs , Styrax and Benzoinum both contain vanillin, resin ester and balsamic acid .

结果表明，四味芳香开窍药主含挥发油，均含有脂环化合物，并存在一些共有成分，如龙脑冰片与苏合香挥发油中均含有倍半萜类成分石竹烯；苏合香和安息香皆为树脂类中药，两者均含有香荚兰醛成分，尚含树脂酯，香脂酸等。中国论文联盟http：//www.lwlm.com

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。

ConclusionThe extraction rate of volatile oils from Heracleum hemsleyanum Diels by supercritical CO2extraction process is higher than that of water vapor distillation,and the optimized extraction conditions are:extraction pressure 25MPa,extraction temperature 45℃ and flow rate of CO2 20L/h, and the yield of volatile oils is 0.65%.

结果通过各因素级差大小的比较可知：萃取压力的变化对萃取率的影响最大，萃取温度次之，而CO2流量对萃取率的影响最小。结论超临界CO2萃取牛尾独活挥发油的萃取率较水蒸气蒸馏法高，最佳萃取条件为萃取压力25MPa，萃取温度45℃，CO2流量20L/h，挥发油收率为0.65%。

ConclusionThe extraction rate of volatile oils from Heracleum hemsleyanum Diels by supercritical CO2extraction process is higher than that of water vapor distillation,and the optimized extraction conditions are:extraction pressure 25MPa,extraction temperature 45℃ and flow rate of CO2 20L/h, and the yield of volatile oils is 0.65%.

超临界CO2萃取牛尾独活挥发油的萃取率较水蒸气蒸馏法高，最佳萃取条件为萃取压力25MPa，萃取温度45℃，CO2流量20L/h，挥发油收率为0.65%。

After 3 months storage, our result showed that (1) color a value of rose liqueur with sucrose treatment had a slower decreased than with fructose treatment,(2) the sample added with caffeic acid or ferulic acid or tea polyphenol showed no significant difference in the color, anthocyanins content, and antioxidant capacity during storage as compared to control, and (3) the total amount of volatile compounds of rose liqueur decreased gradually, however there was one ester volatile formed, hexadecanoic ethyl ester, during storage.

贮藏三个月发现，(1)以果糖勾兑者在储藏试验中，其红色度下降速度较以蔗糖处理者快，建议仍以非还原糖进行勾兑对日后酒液保存较易，且酒液最好能予以避光包装，以避免颜色品质的下降；(2)添加不同之多酚类化合物时发现，添加caffeic acid、ferulic acid和茶多酚对酒液色泽、花青素含量、以及抗氧化能力之降低速度与控制组并无显著性的差异。(3)酒液储藏三个月后，其香气高级醇均有减少之趋势；但有hexadecanoic acid， ethyl ester酯类出现。

After explaining total design of automated test system for microcircuit , the thesis introduces GPIB standard .

文章在说明了微电路模块自动测试系统的总体设计后，对GPIB标准进行了介绍。

He interceded in my behalf.

他替我说情。