查询词典 TLC

The TLC method of ursolic acid and loganin in Cornus chinense Wanger and its kindred plant were respectively seted up.

2川鄂山茱萸果实解剖学特征可以区别川鄂山茱萸及其近缘植物，以免相似入药部位产生的混淆。

METHODS Radix Astragali and the Rhizoma Corydalis were identified by TLC and the content of Imperatorin was determined by HPLC.

采用TLC法鉴别方中的黄芪和延胡索，HPLC法测定胶囊的欧前胡素。

METHODS:Using Dual-wavelength TLC-scanning,the sample was prepared through the column full of D101 macroporous resin with n-butanol extract from the aque ous solution of the granules which had been washed by ether,developer is chloroform-methanol-water(13∶10∶7)(stored at less than 10℃,the lower),detecter is 510nm,reference is 700nm.

双波长薄层扫描法，经乙醚洗涤、正丁醇提取和D101大孔吸附树脂柱层析法制备样品，以氯仿-甲醇-水(13∶7∶2)下层液为展开剂，检测波长为510nm，参比波长为700nm。

By use of High Speed TLC Scanner,CS-920,was used to apply droplet of insecticide solution to the dorsum of the testinsect.

测定的结果表明东台及江浦两地田间的棉蚜已经对有机磷杀虫剂—乐果产生了较高的抗药性。

Investigate the stability of product and make the FT-CS capsule quality standard draft, compared to the Chinese Pharmacopoeia 2005 editions, increase TLC ingredient type of CS, and improve the content determination standard of FT-207 correspondingly.

对成品进行稳定性研究并制定了FT-CS胶囊的质量标准草案，对照《中国药典》2005版增加了CS的薄层鉴定成分种类，提高了FT-207的含量测定标准。

The results showed as follows: 1 Extraction of gelsemium total alkaloids. Total alkaloids were extracted with 95 per cent ethanol. The extract rate was 0.519 per cent and the extract purity were 88.02 per cent and 87.38 per cent; Total alkaloids were extracted with chloroform .The extract rate was 0.416 per cent and the extract purity were 89.02 per cent and 94.52 per cent. 2 Isolation of gelsemium total alkaloids with TLC. Total alkaloids contained five or more alkaloids. The optimal developing agent was chloroform :methanol :ethyl acetate(9:l:0.3),the optimal eluent was methylene chloride:methanol(92:8). 3 Isolation of total alkaloids with column chromatography. Alkaloid A and alkaloid B were obtained, alkaloid B was identified as koumine.

研究结果如下：1、钩吻总碱的提取：用95％的乙醇提取钩吻生物碱提取率为0.519％，其提取物纯度为88.02％、87.35％；用氯仿提取钩吻生物碱提取率为0.416％，其提取物纯度为89.02％、94.52％。2、钩吻总碱的薄层层析分离：总碱中含有5种或5种已上的生物碱；氯仿：甲醇：乙酸乙酯(9：1：0.3)是最佳薄层层析的展开剂；二氯甲烷：甲醇(92：8)是柱层析的最佳洗脱剂。3、钩吻总碱的柱层析分离：共得到两种钩吻生物碱单体成分碱A和碱B，碱B为钩吻素子，碱A可能是钩吻素甲。4、钩吻总碱的急性毒性试验：钩吻总碱小鼠腹腔注射的半数致死量LD_(50是：7.38mg／kg，95％的可信限范围为：6.67mg／kg～7.94mg／kg。

Cephalotaxine ester of 2-oxo-6-methylheptanoic acid was treated with lithium diisopropylamide and Me O-(1-methoxyisopropyl)glycolate to give a mixture of homoisoharringtonine and its stereoisomers with 56% yield. The four stereoisomers separated by TLC showed identical mass spectra and almost superimposed IR but with different 1H NMR spectra. The configuration of the 2'-C and 3'-C of the four isomers were postulated based upon their 1H NMR spectra as compared with the 1H NMR spectra of isoharringtonine and its stereoisomers.

2-氧代-6-甲基庚酰基三尖杉碱(3)与0-(1-甲氧基异丙基)羟基乙酸甲酯(4)在强碱性试剂二异丙胺锂存在下，起亲核加成反应，反应中间体5在室温用酸性丙酮水解，得到一种新的三尖杉酯类生物碱一一高异三尖杉酯碱(6c)及其立体异构体(6a、6b、6d)的混合物，产率56%、通过制备薄层层析分得这四个立体异构体，它们的1H NMR和异三尖杉酯碱及其立体异构体的1H NMR类似，推定了它们的绝对构型。

TLC analysis of the ferment had classified the biosurfactant into glycolipid type. The diameter of oil displacement activity achieved 7.2 cm when use optimized medium. This biosurfactant had a good emulsification, the emulsified fluid could maintain at least 14 days.

排油圈分析和TLC分析表明，菌株E发酵液排油圈直径为7.2cm，表面活性剂为糖脂类生物表面活性剂；该生物表面活性荆叶菜籽油乳化能力校好，可以使乳化性能稳定保持14d以上。

The fermentation product of Acetobacter xylinuml.1812 was hydrolyzed by acid or cellulase, then it was proved that there was glucose in the hydrolyte by TLC and chromatography mass spectrometry, thereby the product was identified as bacterial cellulose.

通过薄层层析和气-质联谱测得木醋杆菌发酵产物经酸或纤维素酶水解后的水解液中主要成份为葡萄糖，从而鉴定出发酵产物为细菌纤维素。

Methods: Radix rehmanniae, radix puerariae, lignum aliformis euonymi, rhizoma coptidis in Shutangluo Capsule were identified by TLC; the Content of berberine hydrochloride in the capsule was assayed by HPLC.

采用薄层色谱法对黄连、葛根、生地、卫矛进行定性鉴别；并应用高效液相色谱法对其中的盐酸小檗碱进行含量测定。

The Porsche Owner: But it's my car!

可，这是我的车呀。

LOX_83}{Oh, another bunch of wackos.

{LOX_83}{呃，又一群怪人。