查询词典 extracts

Five species of solvents, namely, acetone, ethyl acetate, ether, trichloromethane and petroleum ether were selected to obtain extracts from Portulaca oleracea L. with microwave assistance and the biological activities of each extract was tested against Plutella xylostella L.

在微波加热条件下，以丙酮、乙酸乙酯、乙醚、三氯甲烷和石油醚为溶剂对马齿苋干粉进行提取，试验了各溶剂提取物对小菜蛾幼虫的触杀、胃毒及拒食活性，确定了石油醚提取物触杀作用的LD50。

Methods 100 mg of muscle of rat corpse was preprocessed before trimethylamine was extracted with anhydro-methylbenzene, then trinitrophenol was added into extracts, and yellow compounds emerged. The optical density was detected by spectrophotometer at 410 nm and the concentration of TMA-N was calculated using the standard curve. Results There was good linear correlation (R^2=0.9991, P.001) between OD and the concentration of TMA-N in the range of 1~10 mg/L.

大鼠肌肉组织样本100 mg经预处理后，将三甲胺抽提于无水甲苯中，与苦味酸作用，形成黄色的苦味酸三甲胺盐，用分光光度计在410 nm处检测吸光度，标准曲线法计算TMA-N含量。

Results showed that obvious difference existed between kinds and concentrations of pollutants studied in triolein and those in XAD resin extracts, for their difference of sampling ways.

SPMD技术对水中有毒有机污染物浓度估算值与XAD测定值之间差别较大，推测主要来自被动式采样和主动式采样的差异。

Three organochlorine pesticides -endrin, dieldrin, and p,p'-DDT-were used as target compounds to test the hypothesis that triolein embedded cellulose acetate membrane only extracts freely dissolved hydrophobic organic compounds. The effect of dissolved organic carbon on the bioavailability of the OCPs was also examined through accumulation study with TECAM and Japanese medaka.

以异狄氏剂、狄氏剂和p，p'-滴滴涕3种持久性有机氯农药为研究对象，通过室内模拟实验，验证了三油酸甘油脂-醋酸纤维素复合膜富集水中自由溶解态疏水性有机物的假设，研究了水中溶解性有机碳对TECAM富集3种有机氯农药的影响，并与相同暴露条件下日本青鳉鱼的富集结果进行了比较。

Lucidum can be used in the form of triterpene extracts in alternative/adjuvant therapies or for the development of novel triterpene-based agents for the treatment of cancer.

最后，灵芝可以以三萜提取物的形式作为癌症治疗辅助，或是开发新型三萜制剂来治疗癌症。

The bioactivity of 95% ethanol extracts from Houttuyniae cordata which gathered from the mountainous area of north-west Hubei Province to five fungi: Rhizoctonia solani, Botrytis cinerea, Sclerotium rolfsii, Pythium ultimum, Fusarium oxysporum f.

以采自鄂西北山区的鱼腥草95%乙醇浸提液为供试药液，测定了其对马铃薯立枯丝核病菌，大白菜灰霉病菌，辣椒白绢病菌，豌豆根腐病菌和黄瓜枯萎病菌Fusarium oxysporumf。

In this study, we determined that the antimutagenic properties of various tea extracts including green, oolong, pu-erh tea, and black tea and six polyphenols include rutin, quercetin, apigenin, gallic acid, umbelliferone, and tannic acid were examined by Ames test which is a widely applied short-term bacterial assay for detecting DNA damage effect of mutagen.

在本篇研究中，我们探讨利用Ames test的方法筛检不同品种茶类包括绿茶、乌龙茶、普洱茶、红茶和数种常见的多酚类化合物包括单宁酸tannic acid、gallic acid、rutin、umbelliferone、apigenin、quercetin对於抑制PhIP（2-amino-1-methyl-6-phenylimidazo(4，5-b)pyridine）和 2-AAF（2-Acetylaminofluorene）两种致突变剂的抗突变作用。

But both 20 years and 2 years old of pu-erh tea extracts show a strong inhibitory effects against 2-AAF. In addition, tannic acid, gallic acid, rutin, umbelliferone, and quercetin exhibited stronger antimutagenicities against PhIP than apigenin; while all of these polyphenols displayed inhibitory effect against 2-AAF.

而比较数种多酚类化合物发现，tannic acid、gallic acid、rutin、umbelliferone和quercetin对於抑制PhIP的抗突变作用比apigenin来的有效，但是apigenin和其他多酚类化合物对於抑制2-AAF的抗突变作用则均具有明显的抑制效果。

A total of 23 surface soil organic extracts from an F-waste processing area in Southern China were analyzed to screen and assess direct and indirect genotoxicity levels using SOS/umu test.

采用SOS/umu测试方法对我国南方某电子垃圾处理地23个土壤样品的有机提取物的直接和间接遗传毒性进行了初步的评估和筛选。

Methods SOS/umu assay and the ethidium bromide flurescence assay and the single cell gel electrophoresis assay were applied respectively to detect the DNA damage and DNA cross - links and DNA single strand breaks after exposure to the particle extracts of air pollutants in TSCDG.

方法应用SOS/umu试验，大鼠肺Ⅱ型细胞的DNA交联试验和单细胞凝胶电泳试验，检测危险品货运站空气污染物对DNA的损伤情况。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。