萃取剂

The influence of extraction temperature,extraction pressure,extraction time and the dosage of modifier on the extraction of chlorophyl from peach leaf by supercritical CO2 extraction technology was studied.

研究了萃取温度、萃取压力、萃取时间和夹带剂添加量对超临界CO2萃取桃叶中叶绿素的影响。

ResultsThe optimal extraction conditions were as follows:temperature at 50℃, pressure at 35 MPa,velocity of flow 4.5 ml·min-1,100％ ethanol as entrainer.

最佳萃取工艺参数为：萃取压力35 Mpa，萃取温度50℃，乙醇浓度100%，夹带剂流速4.5 ml·min-1，萃取率达到0.425%。

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.

探讨萃取压力、萃取温度、萃取时间、夹带剂类型及用量对熊果酸收率的影响，确定了超临界CO2萃取车前草中熊果酸的适宜条件。

Optimal extraction pressure, extraction temperature, CO2 flow rate, extraction time and dosage of entrainer per gram of tobacco powder were 24 MPa, 55℃, 3.8 Lh^(-1), 3 h, 6 mL, respectively.

优化后的萃取工艺条件为：萃取压力24 MPa、萃取温度55℃、CO2流速3.8 Lh^(-1)、萃取时间3 h、每克烟末夹带剂用量为6 mL。

The optimum conditions of supercritical CO2 extraction were determined by orthogonal experiment as follows: extraction pressure 30 MPa, extraction temperature 40℃, 75% ethanol as entrainer (5% of solid material) and extraction time 2.0 h. The yield of volatile oil was 9.92%.

通过正交实验确定超临界CO2萃取挥发油的优化条件为：以75%乙醇（添加量为原料质量的5%）为夹带剂、萃取压力30MPa、萃取温度40℃、萃取时间2.0h，此时，挥发油的收率为9.92%。

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 microwave-assisted extraction and Florisil solid phase extraction conditions were optimized. Under the optimum condition, the recoveries of 18 organochlorine pesticides (α-HCH,β-HCH,γ-HCH,δ-HCH, heptachlor, aldrin, heptachlor epoxide, endosulfan Ⅰ, p, p'-DDE, dieldrin, endrin, endosulfan Ⅱ, p, p'-DDD, o, p'-DDT, endrin aldehyde, endosulfan sulfate, p, p'-DDT, methoxychlor) were

优化了微波萃取和固相萃取柱净化条件，在最优条件下18种有机氯农药（α-HCH、β-HCH、γ-HCH、δ-HCH、七氯、艾氏剂、环氧七氯、硫丹Ⅰ、p，p'-DDE、狄氏剂、异狄氏剂、硫丹Ⅱ、p，p'-DDD、o，p'-DDT、狄氏剂、异狄氏剂醛、硫丹硫酸酯、p，p'-DDT、甲氧滴滴涕）的回收率在

The conclusions were as follows: theνO-H andνC=O IR absorption maxima shifted towards higher wave numbers after imprinting 17β-estradiol on TFMAA-co-TRIM copolymer with the red shift of theνO-H groups being apparent after precipitation polymerization for 16h while that forνC=O groups being observed after polymerization for 24h. A strong interaction between TFMAA and 17β-estradiol was confirmed by the high selectivity for 17β-estradiol, as indicted by the values of the separation factor of isomers of 17β-estradiol/17α-estradiol (2.28) and the imprinted factor (3.01). Particle diameter of TFMAA-co-TRIM polymer was between 300 nm and 1.5μm, which suited well for solid phase sorbent throughout at low column pressure. The recognition of imprinting TFMAA-co-TRIM polymer for sterol molecules was driven by enthalpy eluted with acetronitile, and low temperature was in favor of the separation of sterol structure analogues on imprinting column. TFMAA-co-TRIM polymer possessed of determinate anti-heat stability, with melting point beginning at 255.84℃, Tp=257.40℃, control TFMAA-co-TRIM polymer and imprinting TFMAA-co-TRIM polymer were respectively decompounded at 267.79℃and 343.11℃, and solid micro-extraction noddle prepared by the special polymerization also showed definite recognition for 17β-estradiol by GC/MS detecting at 270℃. By selection of various washing and elution solvents, elution reagents of close polymerization system were of more advantage in template molecules retention and recognition on molecularly imprinted solid phase extraction column. At a certain extent, progesterone, 17α-estradiol, 17β-estradiol and 4-androstene-3, 17-dione could be intercepted on the MISPE column. Especially, MISPE had high selectivity for progesterone, and imprinting TFMAA-co-TRIM polymer could achieve adsorption balance within 50 min by absorption kinetics test for 17β-estradiol. However, MISPE column showed better selectivity and enrichment property for 17β-estradiol than C18 and CSPE columns according to the data from HPLC and GC/MS analyses. Recovery of 17β-estradiol on MISPE column was up to 85.5% while when prime extracting solution of milk powder was sampled, the recovery of CSPE and C18 columns were 43.7% and 30.7%, respectively.

通过研究阐明：紫外聚合产物TFMAA-co-TRIM中的νO-H振动吸收峰在聚合16h后红移，νC=O振动吸收峰在聚合24h后红移；TFMAA-co-TRIM对雌二醇异构体的印迹因子达到了3.01，α为2.28，优于其它功能单体参与得到的聚合物识别特性；TFMAA-co-TRIM聚合物粒径介于300 nm至1.5μm之间，作为色谱固定相具有良好的通量和低的柱压；在乙腈流动相中，TFMAA-co-TRIM分子印迹固定相的分离过程主要被焓驱动，低温有利于分子印迹固定相分离甾醇结构类似物；TFMAA-co-TRIM分子印迹聚合物在255.84℃时开始熔融，Tp=257.40℃，聚合物CP的降解温度在267.79℃，MIP降解温度在343.11℃，制备的固相微萃取头初步经GC/MS 270℃的耐热性测定；不同的洗提溶剂筛选证明了选择接近聚合溶剂的洗脱体系更有利于MISPE发挥识别效应；分子印迹固相萃取柱对孕酮、17α-雌二醇、17β-雌二醇和雄烯二酮都具有不同程度的保留特性，可作为此类化合物的吸附材料，特别对孕酮强保留的富集特性，可作为孕酮的选择性识别吸附剂，其分子印迹聚合物对17β-雌二醇的吸附动力学测定显示在50 min内基本达到吸附平衡，具有作为传感器核心敏感材料的潜力；对比萃取奶粉中17β-雌二醇性能，MISPE柱比非分子印迹固相萃取柱和C18柱具有更高的保留，回收率依次为85.5%，43.7%和30.7%。

Water,propylene glycol,butylene glycol,glyceryl polymethacrylate,peg-7 glyceryl cocoate,biosaccharide gum-1,phenoxyethanol,hydroxyethylcellulose,ppg-26-buteth-26,chondrus crispus,peg-40 hydrogenated castor oil,sodium hydroxide,methylparaben,benzophenone-4,disodium edta,citrus aurantium dulcisoil,sorbic acid,butylparaben,ruscus aculeatus root extract,glycyrrhiza glabraroot extract,aesculus hippocastanumseed extract,pentadecalactone,iris germanica root extract,rentinyl palmitate,tocopheryl acetate,sodium hyaluronate,citrus aurantium amaraoil,sorbitol,propylparaben,ethylparaben,limonene,linalool,yellow 5,red 4,red 33

水，丙二醇，丁二醇，甘油聚甲基丙烯酸酯，PEG-7 椰子油酸单甘酯，多醣物质，苯氧乙醇，羟乙基纤维素，PPG-26-丁醇聚醚-26，卡拉胶，PEG-40氢化蓖麻油，氢氧化钠，羟苯甲酯，二苯酮-4，乙酸乙二胺二钠，甜橙油，山梨酸，羟苯丁酯，假叶树根萃取，甘草根萃取，欧洲七叶树籽萃取，环十五内酯，鸢尾花根萃取，维他命A酯，醋酸盐维他命E ，透明质酸钠，苦橙油，山梨醇，羟苯丙酯，羟苯乙酯，柠檬精油，芳樟醇，黄5，红4，红33水：几乎所有护肤品成分第一位都是水。丁二醇：保湿剂及溶剂，质地温和

The best parameters of extracting seed oil of Korean pine are 35 MPa,45 ℃,180 min,5 % free-water C2H5OH as modifier .

研究超临界CO2萃取红松子油的影响因素，在试验条件下，其影响因素次序为萃取压力、夹带剂、萃取温度、萃取时间。

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