萃取的

Supercritical fluid extraction technique was used to extract orris oil from the orris and,then,the chemical composition of the product extracted from the orris by means of GC-MC was analyzed.

采用超临界流体萃取技术从鸢尾中萃取鸢尾油，再利用GC MS对鸢尾超临界CO2萃取产物的化学成分进行成分分析，鉴定了鸢尾超临界CO2萃取产物中的18种成分占总出峰面积的98%以上，鸢尾超临界CO2萃取产物的主要成分是十四酸、十六酸和9十八烯酸

Using supercritical CO 2 to extact Agrimonia Pilosa Ledeb Extractive from Agrimonia Pilosa Ledeb ,thl best technelogic condition of it is,temperature 35～40℃;Pressure 16MPa;exact desage about 3000L Per grou

研究利用超临界CO2 从鹤草芽中萃取鹤草芽浸膏的工艺条件，考察了温度、压力、萃取剂用量等对浸膏收率的影响，结果表明，用超临界CO2 从鹤草芽中萃取鹤草芽浸膏的最佳萃取工艺条件为：温度 3 5～4 0℃，压力 1 6MPa，萃取剂用量：每组实验 3 0 0 0L左

The total contents of phenol compounds of fresh Boehmeria nivea root was 200.24± 0.93 mg/g, which is 4.5 times higher than ethanol extracts of fresh Boehmeria nivea leaf, and its ability to remove ABTS free radical is 7.4 times higher than that of fresh Boehmeria nivea leaf, which is one third of Trolox's ability to remove free radical. Antioxidant components of hot water extracts of Boehmeria nivea leaf exhibited 55 and 67% lower than that of fresh leaf respectively.

sulfonic acid］和DPPH(α，α-diphenyl-β-picrylhydrazyl)自由基为最高，其次为热水萃取物和冷水萃取物，而新鲜苎麻根乙醇萃取物总酚类含量为200.24 ±0.93 mg/g，约高於新鲜苎麻叶乙醇萃取物的4.5倍，其清除ABTS自由基能力是新鲜苎麻叶乙醇萃取物的7.4倍，约为维生素衍生物的1/3倍。

The extraction of process of curcuma longa oil s with supercritical dioxide CO 2 was studied by using homogeneous experiment.

本文运用均匀试验设计研究了超临界CO2 流体萃取姜黄油的工艺条件，试验结果表明：最佳的萃取工艺条件为萃取压力 36MPa，萃取温度 50℃，CO2 流量 15kg/h，萃取时间 3h。

The application of ionic liquids aqueous solutions as solvents in the microwave-assisted extraction technique was developed for the extraction of lycorine, lycoramine and galanthamine from Lycoris. Effects of different ionic liquids and the concentration of selected ionic liquids on MAE were investigated, and tradition organic solvent and extraction techniques were compared.

1引言自1986年Ganzler等[1]首次报道采用微波辅助萃取天然产物中化学成分以来，微波辅助萃取技术在食品、环境和天然产物等领域得到了广泛的应用[2~5]，它以萃取时间短、溶剂用量少、选择性强、萃取效率高等优点在中药有效成分的萃取分离方面得到广泛关注[5，6]。

Bioassay results revealed: compared with alcohol control, extracts at parameter 1, 4, 7 stimulated the absolute germination rate and potential, radicle growth, plumular axis growth, fresh weight, dry weight at different levels; extracts at parameter 2, 3 stimulated the all germination index except radicle growth and axis growth; extracts at parameter 6 stimulated all but radicle growth and fresh weight; extract at parameter 8 stimulated only the germination potential.

生物检测结果显示，与酒精对照相比：萃取参数1、4和7等条件苦楝叶提取物对杉木种子绝对发芽率、绝对发芽势、胚根长、胚轴长、鲜重和干重等发芽指标均表现出不同程度的促进作用，萃取参数2和3等条件苦楝叶提取对除胚根和胚轴外的各发芽指标起促进作用，萃取参数5条件苦楝叶提取物对除鲜重和干重外的各发芽指标起促进作用，萃取参数6条件苦楝叶提取物对除胚根和鲜重外的各发芽指标起促进作用，而萃取参数8条件苦楝叶提取物仅对绝对发芽势起促进作用。

Although aqueous extract of Andrographis paniculata, aqueous extract of Mesona chinensis, ethanolic extract of Verbena officinalis at 1.25 μg/mL could only decrease TBARS formation, and ethanolic extract of Glossogyne tenuifolia, ethanolic extract of Mesona chinensis only decreased carbonyl formation at 1.25 μg/mL, ApW, McW, VoE, GtE and McE at 5 μg/mL appeared to have a lengthening in lag phase.

虽然，1.25 μg/mL 穿心莲水萃取物、仙草水萃取物、大陆马鞭草乙醇萃取物只能减少TBARS 的形成，而1.25 μg/mL香茹乙醇萃取物、仙草乙醇萃取物 McE）只能减少蛋白质羰基(carbonyl groups 的形成，但在5 μg/mL 的ApW、 McW、 VoE、 GtE 和McE 可明显延长迟滞期。

An attempt was made to remove color from simulated wastewaters containing Acid Scarlet GR and Reactive violet K-3R by cloud point extraction using a nonionic surfactant of Triton X-114. The influence of the concentrations, equilibrium temperature and equilibrium time on the extraction efficiency was tested. The experimental results show that the extraction efficiency to dye increases with increasing concentration of TX-114 and salt or decreasing initial dye concentration.

本文选用非离子表面活性剂TX-114作浊点萃取剂，研究了由酸性大红与活性紫构成的单元和二元混合染料模拟有色废水的萃取脱色过程，讨论了表面活性剂浓度、染料浓度、盐浓度、平衡温度、平衡时间等因素对萃取效率的影响结果表明，提高表面活性剂浓度、盐浓度有利于提高萃取效率，而染料浓度增加则使萃取效率略有下降。

The interfacial chemistry, synergistic effects and interfacial kinetics of thesynergistic extraction system D_2EHPA-MPA-Fe~(3+) have been studied, where MPA is amono-alkyl phosphate extraction with long carbon chain. D_2EHPA in the mixed extractionsystem strongly exhibits the effect on the thermodynamics of micella formation and interfaceproperties of MPA. Some thermodynamic parameters of micella formation were obtained.The interfacial adsorption behaviour of D_2EHPA is opposite to that of MPA. Theemulsification for single MPA and the mixed system was discussed. The synergistic effectswere found in this mixed extraction system. It is proved that the process of Fe~(3+) extractionfor non-mixed extraction system is controlled by chemical reaction, the controlling reactionoccurs at the interface, and the reaction rate equation is obtained.

本文研究了协同萃取体系D_2EHPA—MPA—Fe~(3+的胶团形成热力学、界面特性、协萃效应和界面动力学(动力学控制机制和反应速率方程)研究发现，混合萃取体系中的D_2EHPA强烈地影响MPA的胶团形成热力学和界面吸附行为，得到了胶团生成常数、胶团形成自由能和临界胶团浓度的热力学参数D_2EHPA和MPA具有相反的界面吸附行为研究发现D_2EHPA—MPA混合萃取剂体系对Fe~(3+)产生了协萃效应动力学和界面化学的研究结果还证实了非胶束混合萃取体系的Fe~(3+)的萃取过程是受化学反应控制的，控制反应发生在界面上

Four different SPE cartridges were tested for extracting six triazines, including atrazine, simazine, prometryn, desethylatrazine, 2-hydroxyatrazine and desisopropylatrazine, and finally ENVI-18 was selected as optimal. The method for solid phase extraction was further systematically studied for details.

考察了4种不同固相萃取柱对三嗪类化合物的吸附效果，最终选择ENVI-18固相萃取柱用于萃取地表水中的三嗪类化合物；系统研究了环境水样中三嗪类化合物的最佳固相萃取条件，选择洗脱溶剂为甲醇，洗脱溶剂用量5 mL，水样在萃取前不需要添加甲醇，不调节pH值。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失