查询词典 extraction

In order to isolar high quality DNA from Trichosanthes kirilowii Maxim leaves enriching polysaccharides and polyphenols, the effects of DNA extraction were studied with four different methods including CTAB regular method, CTAB subarea method, SDS regular method, Low pH extraction medium with high salts.

为了从富含多糖和多酚等次生代谢物质的栝楼叶片中分离出高质量的基因组DNA，以栝楼叶片为材料，对4种不同的DNA提取方法(CRAB常规法、CTAB区室法、SDS常规法、高盐低pH法)进行了试验研究，并首次采用CTAB区室法提取栝楼基因组DNA。

Objective: To optimize the preparation of Trimeresurus tea extraction process and the physical and chemical methods for clarification of the extract obtained in extraction technology to clarify the optimal conditions for a variety of conditions.

摘 要：目的：优化竹叶青茶制备的提取工艺并用物理及化学方法对提取液进行澄清，得到了提取澄清技术中各种条件的最优条件。

The method is simple,convenient,and this extraction procedure is helpful for further study of extraction technology of triterpene acids of Herba euphorbiae Humifusae.

提取方法操作简单、方便，为地锦草槲皮素提取工艺的进一步研究提供了依据。

The method is simple,convenient,and this extraction procedure is helpful for further study of extraction technology of triterpene acids of Herba euphorbiae Humifusae.

结果 用地锦草重量10倍量的体积分数为75%的乙醇作为提取溶剂，提取2 h，共提取3次为最佳方案。结论提取方法操作简单、方便，为地锦草槲皮素提取工艺的进一步研究提供了依据。

Comparing with conventional heating extraction, MAE of triterpene glucoside from Siraitia grosvenorii showed advantages of less time and high extraction rate.

微波辅助提取的提取时间为5min时，提取率达76.56%，而传统的加热提取时间为2h时，提取率为68.46%。

The optimum conditions were achieved and demonstrated as follows: ethanol solution (volume fraction as 60 %) as extraction solution, the ratio of materials to solution as 1:20, microwave power as 600 W and 2 mm extraction time. By the optimum conditions, the yield (83.7%) of flavone from Trollius chinensis Bunge was obtained at 83.7%.

实验结果表明：微波辅助提取金莲花黄酮的最佳工艺条件是体积分数60%乙醇为溶剂，每克料浸提剂体积为20mL，微波功率600W，温度60℃，提取时间2min。

The size of round bottom flask, temperature and water addition were the key of volatile oil extraction of C. uncinata, and addition of N-hexane was helpful for the extraction and collection of volatile oil.

圆底烧瓶的大小、温度及加水量是柱果铁线莲挥发油提取的关键，而添加正己烷有利于挥发油的提取与收集。

Steeped corn endosperm and unsoaked corn endosperm were used respectively for zein extraction. The results indicated that steeping was helpful for the extraction.

分别用浸泡过的整粒玉米和胚乳及未经浸泡的胚乳提取玉米醇溶蛋白，结果表明，浸泡有利于醇溶蛋白的提取。

Stems and leaves were determined and compared by al(no3)3 colorimetry and hplc. the method with ultrasonic wave was applied to extract flavonoids from the leaves and stems of urtica dioical l.. with the contents of flavonoids as the index, the best extraction conditions were selected out. results the best extraction conditions were as follows:soaking the raw material with ethanol(80%, v/v)-water solution (1∶30) at 60℃.

方法分别采用al（no3）3络合分光光度法和hplc法测定异株荨麻茎叶中黄酮类化合物的含量，并对测定结果进行比较；同时以黄酮类化合物的含量为指标，优选出了超声波辅助法提取异株荨麻茎叶中黄酮类化合物的最佳条件。

Ultrasonic extraction method of valeriana officinalis Linn natural perfume was studied The basic parameters of extraction technology were obtained.

通过超声萃取宽叶缬草天然香料的试验研究，得出了基本工艺参数，探讨了超声萃取过程中的工作机理，试验结果表明：超声萃取天然香料具有较显著的效果，值得进一步研究和开发。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切