HPD100与D101大孔吸附树脂纯化禾本科芦笋总黄酮与总酚酸研究

摘要：目的:将HPD100与D101大孔吸附树脂纯化禾本科芦笋总黄酮与总酚酸,优选总黄酮与总酚酸纯化工艺。方法:测定静态吸附率、解吸率、静态吸附曲线来评价HPD100大孔吸附树脂与D101大孔树脂对芦笋中总黄酮与总酚酸的静态吸附性能;然后对径高比、洗脱溶剂、水洗体积、洗脱剂量等考察获取动态纯化工艺。结果:总黄酮与总酚酸在HPD100大孔树脂上静态吸附量为分别为38.23 mg·g-1与22.40 mg·g-1,解吸率大小分别为68.95%与79.05%。动态优选的结果为浓度1∶0.25,上样量4 BV,径高比1∶4,静置4 h,9 BV水洗,50 ml 90%乙醇洗脱,总黄酮与总酚酸纯度分别达34.90%与20.07%。总黄酮与总酚酸在D101大孔树脂上静态吸附量为分别为40.05 mg·g-1与32 mg·g-1,解吸率大小分别为62.78%与71.74%。动态优选的结果为浓度1∶0.25,上样量3 BV,径高比1∶5,静置4 h,7 BV水洗,60ml 90%乙醇洗脱,总黄酮与总酚酸纯度分别达34.10%与17.27%。结论:HPD100与D101大孔吸附树脂可以用于禾本科芦笋中总黄酮与总酚酸有效部位的纯化。     

大孔吸附树脂纯化丹参总酚酸的工艺研究

目的优选大孔吸附树脂纯化丹参总酚酸的工艺研究。方法以丹参总酚酸的含量为指标,对大孔吸附树脂的型号、吸附条件、洗脱条件进行了考察。结果最佳工艺条件为采用D101型大孔吸附树脂,最大上样量为药液质量浓度104 mg·mL-1,除杂洗脱用水量为3 BV,洗脱剂乙醇浓度为60%,乙醇用量为3 BV。结论该工艺可用于纯化丹酚酸类成分。     

夏天无总生物碱渗透泵控释片中总生物碱的纯化工艺研究

目的:优选夏天无总生物碱渗透泵控释片中总生物碱的纯化工艺.方法:选用5种大孔吸附树脂,以总生物碱提取率为指标,采用静态吸附试验对大孔树脂进行筛选.对筛选得到的树脂,用动态吸附解吸试验选择优化最佳工艺条件.结果:HPD722对总生物碱的吸附性能与解吸效果最好;最佳纯化工艺为最大上样量为7BV;上样流速为3BV·h-1; 0.2％氨水液6BV洗脱杂质;95％乙醇洗脱总生物碱,洗脱体积为5BV,洗脱速度为1BV.h-1.结论:该工艺简单可行,纯化效果好,能满足制剂要求.     

金钱草总黄酮的分离纯化研究

目的研究大孔吸附树脂分离纯化金钱草中总黄酮的最佳工艺条件及参数。方法以各种浓度梯度的乙醇洗脱后,以紫外分光光度法测定金钱草中总黄酮的含量为指标。结果实验条件下,采用HPD400型大孔吸附树脂进行吸附,纯化水冲洗,然后用50%乙醇1.5 BV洗脱,经大孔树脂处理后得到总黄酮纯度可达70.6%。结论 HPD400大孔树脂能较好的用于分离纯化金钱草中总黄酮。     

大孔树脂纯化丹参总酚酸的研究

目的:确立大孔树脂纯化丹参总酚酸的最佳纯化工艺。方法:以静态吸附率和解吸率为考察指标,确定大孔树脂型号,并确定纯化工艺参数。结果:选择HPD-400型号大孔树脂用于丹参总酚酸的纯化工艺,最佳吸附工艺条件为:上样吸附流速为2BV/h,上柱液的浓度为0.5 g生药/mL,pH值为4;解析前,以3BV的水洗脱除杂,最佳解析工艺条件为:选择乙醇为洗脱剂,洗脱剂浓度为40%,pH值为5,控制解析流速为3BV/h。结论:所建立的方法简便、准确,可用于丹参总酚酸的纯化。     

大孔吸附树脂纯化鬼针草总黄酮的工艺优选

目的优选大孔树脂纯化鬼针草总黄酮的工艺条件。方法以鬼针草总黄酮的吸附率和洗脱率为指标,通过静态吸附试验比较不同种大孔树脂对鬼针草总黄酮的吸附能力,筛选出合适的大孔树脂型号;通过单因素试验优选鬼针草总黄酮的纯化工艺参数。结果HPD400型大孔树脂纯化效果最好,其最佳工艺参数为药液中质量浓度0．5mg／mL,pH=4．0,吸附速率2BV／h,用9BV60％乙醇洗脱,洗脱速率3BV／h,经大孔树脂纯化后鬼针草提取液中总黄酮纯度由原来的24．47％提高至58．41％。结论HPD400型大孔树脂适用于鬼针草总黄酮的纯化,优选的纯化工艺稳定可行。     

HPD300型大孔吸附树脂分离纯化白芍总苷的工艺研究

目的:优化HPD300型大孔吸附树脂分离纯化白芍总苷的工艺条件。方法:考察上柱药液的pH值、药液的浓度、柱径/柱高的比例、洗脱乙醇浓度、洗脱溶剂用量、上样流速考察、最大上样量及洗脱流速,确定纯化工艺条件。结果:HPD300型大孔吸附树脂分离纯化白芍总苷的工艺条件为上样浓度0.1g生药/mL,流速4BV.h-1,树脂柱径/高比为1∶11,以5倍柱体积水洗脱,继以7倍柱体积50%乙醇洗脱。结论:确定工艺条件下,纯化白芍总苷效果良好,芍药苷的纯度可达50%以上,白芍总苷纯度可达80%以上。     

蓝布正总酚酸的大孔树脂纯化工艺与质量标准研究

目的:优化大孔吸附树脂富集蓝布正总酚酸的纯化工艺,建立蓝布正总酚酸部位指纹图谱,并测定二聚鞣花鞣质A、没食子酸乙酯、鞣花酸及总酚酸含量。方法:采用单因素实验,以总酚酸的吸附率、解吸附率以及总酚酸含量、转移率为指标,筛选最佳大孔树脂型号、吸附条件、除杂条件和解吸附条件;采用HPLC和紫外可见分光光度法,建立总酚酸部位指纹图谱及二聚鞣花鞣质A、没食子酸乙酯、鞣花酸和总酚酸含量测定的质量控制方法。结果:选择HPD-400型大孔树脂,最佳工艺条件为提取物上样质量浓度为8 mg·mL^-1,吸附流速为2 BV·h^-1,径高比为1∶8,上样量为3 BV,10%乙醇4 BV洗脱除杂,除杂流速为3 BV·h^-1,50%乙醇5 BV洗脱,洗脱流速4 BV·h^-1,3批次验证实验得到的总酚酸平均含量67.75%(RSD为3.02%),平均转移率为74.53%(RSD为1.20%);12批样品指纹图谱中共有个18共有峰,指认了其中6个峰,分别为二聚鞣花鞣质B、二聚鞣花鞣质G、二聚鞣花鞣质A、特里马素Ⅱ、没食子酸乙酯、鞣花酸...     

新疆核桃分心木总皂苷的提取纯化工艺研究

目的优选核桃分心木总皂苷的最佳提取纯化工艺。方法以齐墩果酸为对照品,利用紫外可见分光光度法测定核桃分心木中的总皂苷含量;利用单因素实验结果设计正交实验,考察了乙醇体积分数、提取时间、料液比和提取次数对核桃分心木总皂苷提取率的影响;利用大孔吸附树脂对核桃分心木总皂苷进行纯化工艺研究。结果最佳提取工艺为:加25倍量体积分数80%乙醇,80℃回流提取2次,每次2h;最佳纯化工艺为:采用D101大孔吸附树脂,最大上样量为180mL,水洗脱量8BV,洗脱剂体积分数50%乙醇,洗脱体积7BV。结论该法简易可行,效果较佳。     

罗布麻叶总多酚纯化工艺及抗氧化活性研究

目的建立并优化罗布麻叶总多酚的纯化工艺及其抗氧化活性研究。方法以吸附量和解吸率为指标,通过静态吸附实验,确定罗布麻叶总多酚纯化的最佳树脂;并通过动态吸附和解吸实验,对最佳吸附树脂工艺条件进行考察。结果最佳纯化工艺条件:上样浓度6.0 mg·m L-1,吸附速率2 BV·h-1,最大上样量8 BV,除杂用水量5 BV,洗脱液为50%乙醇,洗脱流速2 BV·h-1,洗脱体积为3 BV。结论经HPD-300大孔树脂分离纯化后,罗布麻叶总多酚纯度提高,纯化后抗氧化活性明显增加。     

Comparison of the choleretic properties of bile acids

The choleretic properties of cholic, chenodeoxycholic, and deoxycholic acid and their taurine and glycine conjugates were compared to their ability to form micelles. It has previously been concluded that deoxycholate has the lowest critical micellar concentration; chenodeoxycholate is slightly higher and cholic is much higher. Conjugation with glycine and taurine has little or no effect on the critical micelle concentration. Since the choleretic properties of bile salts are thought to be directly proportional to their osmotic activities, one might suspect that deoxycholic acid would be the least choleretic, chenodeoxycholic slightly more choleretic and cholic much more choleretic, with little difference between the conjugated and unconjugated forms. However, in the present study, cholic, chenodeoxycholic and taurocholic acid produced similar increases in bile flow (450–700 μl/kg) after an equimolar dose (55 μM/kg). Except for the conjugation of deoxycholic acid with taurine, conjugation of these bile acids with glycine or taurine always decreased the choleretic properties of the bile acids. Therefore, it has been concluded that there is not a good correlation between the in vitro osmotic properties of bile acids and their ability to increase bile flow.     

抗癌活性成分满五酸等三个化合物的分离和鉴定

从产于四川宜宾翼梗五味子果实中,分得抗癌活性成分满五酸(1),同时分得schizandronic acid(2)和cuparenic acid(3),结构由与标准化合物比较光谱数据和物理常数而确证。     

Pomegranate (<Emphasis Type="Italic">Punica granatum</Emphasis>) pure chemicals show possible synergistic inhibition of human PC-3 prostate cancer cell invasion across Matrigel™

Summary Four pure chemicals, ellagic acid (E), caffeic acid (C), luteolin (L) and punicic acid (P), all important components of the aqueous compartments or oily compartment of pomegranate fruit (Punica granatum), and each belonging to different representative chemical classes and showing known anticancer activities, were tested as potential inhibitors of in vitro invasion of human PC-3 prostate cancer cells in an assay employing Matrigel™ artificial membranes. All compounds significantly inhibited invasion when employed individually. When C, P, and L were equally combined at the same gross dosage (4 μ g/ml) as when the compounds were tested individually, a supradditive inhibition of invasion was observed, measured by the Kruskal-Wallis non-parametric test.An erratum to this article can be found at     

HPLC法测定熊去氧胆酸片有关物质的含量

[摘要]目的：建立高效液相色谱法测定熊去氧胆酸片有关物质含量的方法。方法：用十八烷基硅烷键合硅胶为填充剂，以磷酸盐缓冲液（pH3.0）-甲醇-乙腈（35:37:28）为流动相，示差折光检测器测定。结果：在选定的色谱条件下，各成分可达到很好的分离，7-酮基胆石酸、胆酸、鹅去氧胆酸、胆石酸分别在0.05~2.00，0.05~2.00，0.05~2.00，0.10~2.00mg·mL-1的范围内线性关系良好(r>0.9989)；精密度、稳定性试验的RSD均不大于0.5%；回收率分别为100.1%、99.8%、100.7%和101.9%（n=9,RSD<1.4%）。7-酮基胆石酸、胆酸、鹅去氧胆酸、胆石酸定量限分别为3.0、2.5、7.0、20μg·mL-1，检测限分别为0.8、0.7、2.0、3.5μg·mL-1。测定供试品两批，供试品一7-酮基胆石酸检出量为0.03%，胆酸和胆石酸均未检出，鹅去氧胆酸检出量为0.66%；供试品二7-酮基胆石酸、鹅去氧胆酸检出量均为0.10%，胆酸和胆石酸均未检出。结论：该方法灵敏度高，专属性强，适于测定熊去氧胆酸片中有关物质的含量。     

Antitumor triterpenes from medicinal plants

Thirteen kinds of naturally occurring or derivatised triterpenes, reported to have an antitumoral property, were reinvestigated on the basis of their direct cytotoxicity or the inhibitory activity on cell growth against five kinds of cultured human tumor cells,i. e., A-549, SK-OV-3, SK-MEL-2, XF498 and HCT15,in vitro. Ursonic acidIII, betulinic acidVIII, betulonic acidX and glycyrrhetinic acidXI were exhibited a marked inhibition on cell growth.     

HPLC同时测定升麻中三个酚酸类成分的含量

目的建立快速测定升麻中咖啡酸、阿魏酸及异阿魏酸含量的HPLC方法。方法色谱柱为C18柱(4.6 mm×250 mm,5μm);流动相:乙腈-0.01%磷酸梯度洗脱;柱温:30℃;检测波长:320 nm;流速:1.0 ml/min。结果咖啡酸、阿魏酸、异阿魏酸分别在5.78~115.6μg/ml(r=0.9998,n=6),4.03~80.60μg/ml(r=1,n=6),16.45~329.00μg/ml(r=1,n=6)范围内线性关系良好,回收率在97.6%~101.5%。结论建立的方法准确可靠,可以用于测定升麻中咖啡酸、阿魏酸、异阿魏酸的含量。     

HPLC测定L-天门冬氨酸中的有关物质

目的建立L-天门冬氨酸中羟基丁二酸、丁二酸和富马酸等有关物质的检查方法。方法采用HPLC法,使用AQ C18色谱柱,0.01 mol.L-1的磷酸二氢钾水溶液(磷酸调pH3)为流动相,检测波长200 nm。结果主成分和杂质可完全分离。结论建立的方法灵敏、专属,可用于L-天门冬氨酸中有关物质的测定。     

Oral antipyretic therapy: Evaluation of the N-aryl-anthranilic acid derivatives mefenamic acid,tolfenamic acid and flufenamic acid

Summary The antipyretic activity of three N-aryl-anthranilic acid derivatives, mefenamic acid, tolfenamic acid and flufenamic acid, was compared and their optimal antipyretic dose determined in a trial in 87 children (aged 5 months to 15 years), who suffered from infections and fever exceeding 38.5°C. Tolfenamic acid proved to be the most potent antipyretic agent of the three drugs; it was eight times more powerful than mefenamic acid and three times more powerful than flufenamic acid. The optimal antipyretic doses were: mefenamic acid 4 mg/kg, tolfenamic acid 0.5 mg/kg and flufenamic acid 1.5 mg/kg. It is evident that the antipyretic activity of these anthranilic acid derivatives is even greater than their antirheumatic effect, the difference being most noticeable in the case of tolfenamic acid.