查询词典 alkaloids

METHODS Acidic dye colorimetry with bromothymol blue as ion pair reagent was employed to determine the alkaloids in samples.

用溴麝香草酚蓝同川芎生物碱形成稳定的有色离子对酸性染料比色法测定总生物碱的含量。

Methods:total alkaloids of radix Sophora lavescens were extracted by acidified water,then adjusted to neutral by sodium hydroxide solution, dissolved with buffer solution,then were mixed with 0.025％ of bromothymol solution and chloroform,and then the mixture was shaken,standing and demixed,the absorbability of chloroform layer was detected at the wavelength of 413nm.

将苦参的酸水提取液用氢氧化钠溶液调节至中性后，依次加入pH=7.6缓冲溶液，溴代麝香草酚蓝指示液、氯仿混合振摇，静置分层，于413 nm波长处测定氯仿层吸收度。

The analysis result showed that the contents of total alkaloids in hairy roots were higher than explants and calli.

检测结果表明，毛状根中的总生物碱含量高于长春花的原植株和愈伤组织。

In our continuous chemical and pharmacological studies of indole alkaloids possessing analgesic activity, we have been interested in compounds of this type, which have been isolated from plants belonging to genera Calycanthaceae, Idiospermaceae, and Rubiaceae.

在连续化学和吲哚生物碱具有镇痛活性的药理学研究当中，我们一直在关注从腊梅科，奇子数科，茜草科这类植物分离出来的这种类型的化合物。

The results were as follows:ethanol volume fraction 70%,solid liquid ratio 1∶10,extraction time 10 min,temperature 50℃,ultrasonic power(160 W). Capsella bursa-pastoris ; alkaloids ; ultrasonic ; extraction

近年来，人们用超声波技术提取植物中的生物碱、黄酮、多糖、皂甙、蒽醌、香豆素等生物活性物质[3，4]，结果都表明超声波提取比常规提取法费时少

ABSTRACT This thesis is aimming at the synthetic study of Cephalotaxine, and consists of the following three parts: Charpter 1 reviews the isolation, chemical structure identification, biological activities, and synthetic studies of structurally unique antileukemia Cephalotaxus alkaloids.

本论文以三尖杉碱的全合成新方法为研究的核心，共分以下三部分内容：第一章简要地概述了天然三尖杉生物碱的分离、结构及生理活性，三尖杉碱的全合成研究。

Till today, we have extracted and purified alkaloids from from Macleaya Cordata, Chelidonium Majus L., Tripterygium Wilfordii Hook f., Sedum Sarmentosum Bunge, and obtained pure sanguinarine, ethoxysanguinarine, oxysanguinarine, chelidonine, chelerythrine, ethoxychelerythrine, chelilutine, chelirubine, protopine,α-allocryptopine,β-allocryptopine, coptisine, berberine, corysamine, bocconine; triptolide, tripdiolide, triptonide, wilforddine; N-methylisopelletierine, dihydro-N-methylisopelletierine, sarmentosin etc.

我们对博落回、白屈菜、雷公藤、垂盘草等天然植物进行了大量的提取和分离研究；并分离出了血根碱、乙氧基血根碱、氧化血根碱、白屈菜碱、白屈菜红碱、乙氧基白屈菜红碱、白屈菜黄碱、白屈菜玉红碱、原阿片碱、α-别隐品碱、β-别隐品碱、黄连碱、小檗碱、沙明碱、博落回碱，雷公藤内酯醇、雷公藤内酯二醇、雷公藤内酯酮、雷公藤碱，N-甲基异石榴皮碱、二氢- N-甲基异石榴皮碱、垂盘草甙等单体。

The preparation method comprises removing benzyl of the compound IV0 in alkali condition to obtain the compound (V, reacting the compound with benzyl chloroformate to obtain the compound, wherein the compounds can be used to prepare 5-substituted-hydride indolizine natural alkaloids.

本发明所提供的制备方法是将化合物在碱性条件下去苄基得到的化合物，将化合物与氯甲酸苄酯反应，生成的化合物。和化合物可以用于制备5-取代-氢化中氮茚天然生物碱。

Main ingredients of Epimedium are flavonoids, phenolic glycosides, polysaccharides, chromone, alkaloids.

一定要翻译正确了。不要搞什么在线翻译的，谢谢。100分+100分，我这里不好悬赏200分

Methods The plasma concentration of epigoitrin after ig administration with total alkaloids of Radix Isatidis was determined by HPLC method and the body temperature was recorded by electronic thermometer. The individual PK parameters were fitted using one compartmental model.

给大鼠ig板蓝根总生物碱，不同时间取血并对体温进行观察，采用高效液相法测定血浆中表告依春的浓度，用一房室模型计算药动学参数，采用3种药动学与药效学拟合模型，分别对药效学参数进行拟合。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。