减压浓缩

结果：以90℃减压浓缩，2500r/min、30min离心精制，进口温度为140℃喷雾干燥为最佳的浓缩、精制及干燥条件。

Result : The best processes of concentration , refine and dryness were as follows : vacuum concentration at 90 ℃; 2 500 r / min , 30 min centrifugal refine ; spray dryness at the inlet temperature of 140 ℃ .

精制黄酮C水解，用乙酸乙酯萃取水解液得萃取液，萃取液减压浓缩得棕褐色固体D，固体D经硅胶柱层析得两个甙元，用波谱知识鉴定其为山奈酚、槲皮素。

Two kinds of flavone aglycones were obtained from hydrolyzed refined flavone by water , through silica gel chromatography separation .

调节反应产物的pH值，在去离子水中透析，减压浓缩后真空干燥。

Control pH value of the product and then was dialyzed in de-ion water for 12 h ; lastly concentrate the product in the vacuum drier .

脱色浓缩的理想条件为稀植酸加入0.5%～1.5%活性炭搅拌30～60min，脱色液控制温度30～50℃减压浓缩至淡黄色粘稠状。

For decolorization and concentration , diluted phytic acid was treated with activated carbon and stirred for 30 ￣ 60 minutes , Under a temperature of 30 ￣ 50 ℃ and reduced pressure , the decolorized phytic acid solution was concentrated to a light yellow and stringy liquid .

在上述条件下，对反应混合物进行分离提纯，减压浓缩得产品。

The reaction mixtures were separated and purified under above conditions .

该膜浓缩方法比常规的减压浓缩方法节约能源、节省用水。

The membrane concentration is conserve energy and save water than conventional enrichment methods .

最后，对该浓缩液进行减压浓缩或喷雾干燥，即得到浓液状或粉状的水解动物蛋白产品。

Then the permeates was concentrated by reverse osmosis or dried using a spray drier .

同时采用减压浓缩技术、醇沉法对桦褐孔菌菌丝体的多糖提取。

Polysaccharide extracting is used the methods of reduced pressure concentration technology and alcohol precipitation for mycelia of Inonotus obliquus .

粉剂经过80%甲醇浸提后减压浓缩，再用正丁醇进行萃取，有效成分被分配到正丁醇相中。

Powder of spraying drying was extracted with 80 % of methanol , followed by extraction with n-butanol at room temperature .

将小刺猴头菌子实体干品粉碎成粉末，室温下用95%医用乙醇多次进行浸泡提取，合并提取液，在40℃条件下减压浓缩，得到乙醇提取液浓缩液。

Powder the dried fruiting body of H. caput-medusae , soak and extract the powder with 95 % ethanol at room temperature for many times .

分批将提取液减压浓缩，经大孔树脂分别以蒸馏水、30%乙醇及70%乙醇洗脱分离。

After filtrating the macro porous resin were used to isolated and purified Equisetum extract by distilled water , 30 % ethanol , 70 % ethanol .

采用平板超滤设备对大蒜乙醇提取液进行分离纯化，除去部分色素、糖类等杂质，超滤透过液先减压浓缩回收乙醇溶剂，再经真空冷冻干燥成产品。

By using flat ultrafiltration membrane equipment to separate allicin from ethanol-extracted liquid of garlic , some impurities such as pigments and glucides were partially removed .

采用高浓度醇溶液处理羊栖菜粉、稀酸提取、减压浓缩、乙醇分级沉淀和冷冻干燥等单元操作，可以获得褐藻糖胶产品。

The fucoidan product was obtained by pretreatment of algae powder with high concentration ethanol , diluted acid extraction , concentration under vacuum , ethanol precipitation and lyophilization .

材料与方法取一定量的白桦树皮干粉，通过乙醇回流，减压浓缩和甲醇-氯仿重结晶等步骤获得白桦酯醇纯品。

MATERIAL AND METHODS : Betulin was isolated from dry powder of the bark of silver birch ( Betula platyphylla Suk ) by using ethanol circumfluence , decompress concentration and methanol-chloroform recrystallization .

针对高浓度有机络合镀镍废液提出了减压蒸发浓缩&结晶处理工艺流程。

The waste liquid is processed by decompression-evaporation and concentration crystallizing .

方法用蒸馏法及减压提取浓缩等法制成颗粒，用于治疗月经不调，经闭痛经。

Methods We used the methods of distillation and decompressive extraction , concentration to produce the granule , which was use to cure the disease of irregular menses , amenorrhea and algomenorrhea .

针对克林霉素磷酸酯工业生产过程中解吸液的组分特性和目前传统生产技术存在的问题，研究了用纳滤膜浓缩替代减压蒸馏浓缩的可行性。

Aimed to solve the problem in the former production process of Clindamycin Phosphate ( CLP ), the paper discussed the feasibility that the desorption solution of CLP was concentrated by nanofiltration .

按照目前比较常用的天然产物的提取分离办法，将样品冷冻干燥后，用100%氯仿浸泡，收集氯仿滤液，减压蒸馏浓缩去除浸提溶剂，得到黑褐色的浸膏状物质。

According to the frequently used methods of extraction and isolation of natural products from organic body , the freeze-dried ascidian tunica was exhaustively extracted with 100 % chloroform then the combined extracts were filtered and the solvent was separately concentrated under vacuum to yield a dark-brown gum .

土壤中乙草胺用甲醇提取，提取液经减压过滤，浓缩，石油醚定容用GC-ECD测定。

Acetochlor in soil was extracted by methanol , with pressure reduction and pressure filtration and constant volume of petroleum ether , and was subjected to gas chromatography with ECD .

水稻植株、稻米中乙草胺用二氯甲烷提取，提取液经减压过滤，浓缩，弗罗里硅土柱净化，定容后用GC-ECD检测。

Acetochlor existed in rice plant , rice was extracted by dichloromethane , with pressure reduction and pressure filtration , the extracts were concentrated , purified and detected by rotary densifier , Florisil column and GC-ECD respectively .

减压膜蒸馏浓缩处理脱硫液的试验研究

Experimental Study on Reduced Pressure Membrane Distillation Concentration Processing Doctor Solution

对减压膜蒸馏浓缩硫酸稀土溶液和与扩散渗析联合回收低浓度的硫酸做了研究。

Concentrating RE sulphate solutions by VMD was first experimentally studied in this paper , and in sulphuric acids recovery low concentration from RE sulphate solutions by VMD and DD was also studied .