Q : my first question is if hbv nucleoside analogues happened with the resistance there , then the solution is to add - on other nucleoside drugs for combination therapy , or switch another nucleoside drugs 《国际肝病》 ：乙肝用核苷类似物出现耐药后，是加用其他核苷类药物，还是转换另外一种核苷类药物？
Wind - evil and remove wetness - evil . the first part of the dissertation surveyed the chemical researches on plants of anemone and chemical structure , extraction , researches on triterpenoid saponins of anemone plants 本文对毛茛科银莲花属植物化学成分及该属三萜皂苷类成分的提取分离、结构测定研究进行了综述。
The physiological functions of some natural pigments were reviewed , some natural pigments such as carotenoid , xanthophylls , flavanones and anthocyanin were introduced on antioxidant activities , antibacterial activities and health protection 综述了中药色素的药理作用，对类胡萝卜素、黄酮类、花色苷类等色素的抗氧化活性、抗菌活性及保健功能作了简要介绍。
The current advance of extracting effective ingredients from domestic chinese herbs by cellulose was summarized in this article , so as to provide some references for extracting active ingredients in chinese medicine with cellulase in future 对近年来国内应用纤维素酶提取中草药有效成分的研究进展作一概述,主要对纤维素酶提取黄酮类成分、皂苷类成分和多糖类成分等进行总结,为进一步应用纤维素酶提取中草药有效成分提供参考。
In order to study the influence factors of aoa of rose flowers , the effects of drying and extraction methods on the aoa of rose flowers were investigated . the results indicated that drying after high - temperature short - time pretreatment was rather effective to maintain their aoa ; the aoa of water extracts was stronger when the temperature was raised from 25 to 100 ; by using orthogonal test , the optimum extraction conditions of rose flowers were : solvent - 75 % ethanol ; ratio of material and solven - 1 : 10 ; extraction times - three times with 24 h at one time , at the room temperature . the extracts obtained by 75 % ethanol were fractionatedly extracted with petroleum , diethyl ether , ethyl acetate and n - butanol in turn , and the various fractions " aoa were analyzed 为了探讨玫瑰花抗氧化活性的影响因子，比较了不同干燥方法、提取方法对其抗氧化活性的影响，发现：经短时高温处理后再进行干燥有利于较好地保持玫瑰花的抗氧化活性；以水作溶剂提取时， 25 100范围内水提液的抗氧化活性随着温度的升高而增强；通过正交实验筛选得到常温下玫瑰花抗氧化活性物质的最佳提取方法为： 75乙醇为溶剂，液料比1 ： 10 ，提取3次，每次24h ； 75乙醇提取物依次用石油醚、乙醚、乙酸乙酯、正丁醇等有机溶剂进行两相分部萃取，发现玫瑰花的抗氧化活性物质主要存在于乙酸乙酯部，说明玫瑰花抗氧化活性主要成分可能是单宁类、黄酮苷类和原花色素类化合物； 4
In this experiment ， the pigment was extracted from the 2 black rice varieties ， yanheidao and yanzinuo ， and its contents were 1 . 2 % and 1 . 4 % of hulled rice ， respectively ， but 90 % in the hull . components seperation and identification proved that black rice pigment from the 2 varieties belonged to anthocyanin consisting of chrysanthemin and keracyanin 岩黑稻、岩紫糯2个黑米稻品种糙米的黑米色素提取率分别为1 . 2和1 . 4 ，糠皮的黑米色素提取率分别为9 . 6 、 12 . 0 ，约90的黑米色素存在于糙米糠皮中.性质研究认为， 2品种黑米稻的黑米色素结构均属花青苷类，经组分分离鉴定，花青定- 3 -葡萄糖及花青定- 3 -鼠李葡萄糖可能是构成色素的组分
The structures of phenylethanoid glycosides in plant extract of cistanches deserticola were successfully analyzed and identified by electrospray ionization multi - stage mass spectrometry ( esi - ms ( superscript n ) ) in negative mode , some interesting neutral losses were found , which helped us to confirm the structures of compounds without tedious separation and purification procedures , then the fragmentation mechanisms were explored 摘要采用电喷雾多级串联质谱技术，对肉苁蓉药材粗提物中的苯乙醇苷类化合物的特征质谱行为进行了系统研究，根据一些特征的中性碎片丢失，提出了该类化合物的质谱裂解规律。
