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水气蒸馏
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  steam distillation
     A new type steam distillation and reflux apparatus
     一种新型水气蒸馏回流仪
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  相似匹配句对
     A new type steam distillation and reflux apparatus
     一种新型水气蒸馏回流仪
短句来源
     Osmotic distillation
     渗透蒸馏
短句来源
     MEMBRANE DISTILLATION
     膜蒸馏
短句来源
     Water and Gas Problem of High Temperature Compost.
     高温堆肥的水气矛盾
短句来源
     Water and Gas Alternate Injection Technology in EOR
     水气交替注入提高采收率技术
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  steam distillation
Regeneration of Spent TBP-Diluent Solvent by Steam Distillation
      
Regeneration of irradiated and actual spent solvent (30% TBP in a hydrocarbon diluent) by overheated steam distillation was studied in batch experiments.
      
Simulation of Steam Distillation of Multicomponent Mixtures of Higher Aliphatic Acids
      
A mathematical model of steam distillation of multicomponent mixtures of higher aliphatic acids is proposed, based on solving the equation of equilibrium states for closed systems with account of the non-ideal behavior of a solution.
      
Acid hydrolysis followed by steam distillation released more than 95% of the acetyl groups from the two major nucleoproteins.
      
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The article developed a new type of steam distillation and reflux apparatus.This apparatus can finish the operations of steam distillation、reflux and watershed.The results were good.

提出了一种新型水气蒸馏回流仪 ,该仪器具有水气蒸馏、回流提取及分水等多种功能 ,且便于操作。经试用 ,效果良好。

The most component in Kaempferia galanga L. is the starch which affects evidently the extraction effect of the essential oil from Kaempferia galanga L The four quantitative analysis methods were studied for detecting the starch and its enzyme-decomposed products such as polysaccharids and monosaccharide. To discuss the characteristics, functions, restraining scope and the correlations of the four testing methods, which are helpful to control the extraction process of the essential oil. And the testing results...

The most component in Kaempferia galanga L. is the starch which affects evidently the extraction effect of the essential oil from Kaempferia galanga L The four quantitative analysis methods were studied for detecting the starch and its enzyme-decomposed products such as polysaccharids and monosaccharide. To discuss the characteristics, functions, restraining scope and the correlations of the four testing methods, which are helpful to control the extraction process of the essential oil. And the testing results of the fresh Kaempferia galanga L. are as followings: The total content of starch: 7.77%; the average content of the reducing sugar after twice enzyme-decomposed: 9.69%; the relative content of the polysaccharids tested by GCP: 2.8458%; and the relative content of the monosaccharide tested by HPLC: 86.55%.

沙姜中淀粉含量较高,极大地影响到沙姜精油的提取分离效果。在采用水气蒸馏法提取沙姜精油的过程中,我们选用了液化酶和糖化酶对沙姜淀粉进行二次酶解。并通过对沙姜淀粉、酶解产物多糖、单糖等的定量测定来监测酶解结果。对广东阳春产鲜沙姜的测定结果为:总淀粉含量7.77%;二次酶解的还原糖平均含量为9.69%;GCP测定二次酶解液中多糖的相对含量为2.8458%;HPLC测定寡糖中单糖的相对含量86.55%。以上测定结果说明一次酶解可有效地断裂淀粉,降低体系的黏度;二次酶解使蒸馏后的残渣易于过滤并与浆液分离,解决了废料污染的问题。

Objective To analyze and compare the constituents of essential oils in the fruits,leaves and stem of Zanthoxylum rhetsoides and roughly evaluate their antibacterial activity.Methods The volatile oil was obtained by vapor distillation,their components were analyzed by GC-MS and antibacterial activity was tested by scrip method.Results The extract ratio of volatile oils from the fruits was 4.73 %,in which sabinene(32.43 %),limonene(28.91 %) and 1,8-cineole(13.55 %) were the main constituents.1.89 % essential oils...

Objective To analyze and compare the constituents of essential oils in the fruits,leaves and stem of Zanthoxylum rhetsoides and roughly evaluate their antibacterial activity.Methods The volatile oil was obtained by vapor distillation,their components were analyzed by GC-MS and antibacterial activity was tested by scrip method.Results The extract ratio of volatile oils from the fruits was 4.73 %,in which sabinene(32.43 %),limonene(28.91 %) and 1,8-cineole(13.55 %) were the main constituents.1.89 % essential oils was got from the plant leaves and included 1,8-cineole(43.79 %),Sabinene(26.89%) and α-terpineol(11.13 %) as main components.0.21 % essential oils which main constituents were tperpinen-4-ol(37.77%) and sabinene(10.58 %),was also obtained from the plant stems.Results testing for antibacterial activity showed that essential oils in the fruits had no activity,in the leaves did inhibitory effect only on two bacterial species and in the stems had strong inhibition to all bacterial species in our experiments.Conclusion Essential oils in the fruits owned the highest yields among three parts of Zanthoxylum rhetsoides and their containing constituents were different from each other.It was also observed that essential oils in the stems showed strong antibacterial activity.

目的分析、比较大叶臭椒果实,叶,茎3个不同部位挥发油的化学成分组成,并探讨其抑菌活性。方法采用水气蒸馏法提取挥发油,气相色谱-质谱联用技术进行挥发油化学组分分析;纸片法进行抑菌活性实验。结果果实中挥发油提取率为4.73%,主要成分为桧烯(32.43%)、苧烯(28.91%)和1,8-桉树脑(13.55%);叶部分中含挥发油提取率1.89%,主要成分为1,8-桉树脑(43.79%)、桧烯(26.89%)和α-萜品醇(11.13%);茎中挥发油提取率为0.21%,主要成分为萜品烯-4-醇(37.77%)和桧烯(10.58%)。果实中挥发油无抑菌作用;叶提取挥发油对铜绿假单胞菌、金黄色葡萄球菌有抑制作用;茎中挥发油对多种菌株均有抑制作用。结论果实中挥发油含量最高,且果实、叶和茎中的挥发油成分差别较大;茎所提取得的挥发油有广谱抗菌作用。

 
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