萃取

Methods The effects of pressure, temperature, time, CO2 flow rate types, and volume of entrainer on the urosolic acid extracts were studied. The optium conditions for SFE CO2 was determined. The technology of SFE CO2 was compared with that of traditional solvent extraction.

探讨萃取压力、萃取温度、萃取时间、CO2流量、夹带剂类型及用量对熊果酸收率的影响，确定了超临界CO2萃取山茱萸中熊果酸的适宜条件，并将超临界CO2萃取法与传统的有机溶剂提取法进行了比较。

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。

The operation parameters include different starfruit weight, flow rate, extraction time, extraction pressure, extraction temperature, different addition volume of ethanol cosolvent, ethanol concentration and other extraction way.

以杨桃量、泄压流速、萃取时间、萃取压力、萃取温度、共溶剂乙醇的添加量与不同萃取方式等为操作变因，配合一次一变因法来进行探讨，以找出最佳萃取条件。

Temperature and 30 mL CO:. Under this condition, the highest ratio of rotenone can meet 0.359% counted with engineering calculation. For total compounds extraction. 6000psi. 70癈. 40mL and the ratio is 10.06%. For rotenone content in total compounds. 3000psi. 35 癈. lOmL and the high content percent is 7.59%. So when conducting SC-CO: extraction of Tephrosia vogelii.

非洲山毛豆的SC-CO_2萃取应根据萃取目的选用相应的工艺条件SC-CO_2萃取非洲山毛豆生产杀虫剂，应选用压力5000psi，温度45℃，流量30mL的工艺条件；(5)通过夹带剂对萃取效果的影响研究，结果表明加入夹带剂可显著影响非洲山毛豆的SC-CO_2萃取效果。

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 influences of pressure, temperature ,flowing rate of CO_2 and extraction time on the yield of camphor tree seed oil were investigated.

研究了超临界CO2萃取樟树籽油的工艺，确定萃取最佳工艺参数为萃取温度40℃、萃取压力20MPa、CO2流量35kg/h、萃取时间100～120min。

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