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多波长高效液相色谱法同时测定栀子中的三类成分 总被引:23,自引:2,他引:23
目的同时测定栀子中3类有效组分,9个成分(栀子酸、栀子苷、异栀子苷、京尼平龙胆二糖苷、绿原酸、藏红花酸、3种藏红花素)的含量。方法紫外-可见三波长同时检测的高效液相色谱法:色谱柱为Phenomenex Luna C18柱(250 mm×4.6 mm ID,5 μm);流动相为(A)0.3%甲酸水溶液, (B)甲醇-乙腈(9∶1);流速为0.8 mL·min-1;柱温为35 ℃;检测波长为 240 nm(栀子酸、栀子苷、异栀子苷、京尼平龙胆二糖苷), 330 nm(绿原酸)和440 nm(藏红花酸和3种藏红花素);线性梯度洗脱。结果建立了同时对栀子中的9个成分进行定量的测定方法,并将此方法用于5个产地栀子各成分的测定。结论为中药材栀子提供了更合理、可靠的质控方法。 相似文献
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目的:探讨野生与栽培中药地骨皮中香草酸含量的差异。方法:采用高效液相色谱法(HPLC)对野生和栽培的中药地骨皮中的有效成分香草酸进行测定,采用Kromasil ODS C18(4.6mm×250mm,2.5μm),流动相为乙腈:1.0%冰醋酸水溶液(10∶90,用三乙胺调节pH值,pH=3.0),温度为35℃,检测波长为262nm,流速为1.0mL/min。结果:香草酸浓度在7.69~71.85μg/mL范围内呈良好的线性关系(r=0.9997),平均加样回收率为99.95%,RSD值为1.63%(n=6),在线性关系内,栽培中药地骨皮中香草酸的含量高于野生地骨皮。结论:HPLC方法检测香草酸含量简便易行,稳定性高,重复性好,检测结果表明地骨皮的质量与生长环境有密切关系,从而为临床应用地骨皮提供参考依据。 相似文献
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目的 通过对广东连州道地药材地榆的规范化仿野生种植栽培,研究连州种植地榆质量情况,为培育优质中药材,保护连州野生地榆药材资源及可持续开发利用提供参考。方法 选择适合地榆生长的连州区域进行仿野生种植,分为施肥与不施肥两组,按照《中药材生产质量管理规范》(GAP)规范要求,对地榆进行规范化种植,分别与野生组对照比较。结果 连州有适合地榆生长环境,两组种植1年的地榆药材分别进行有效成分含量测定,土壤结构相比,不施肥组总体要优于施肥组和野生组,地榆的亩产量及产值对比分析,施肥组的要高于其他两组,施肥组鞣质含量8.3%、没食子酸含量1.4%,不施肥组鞣质含量11.4%、没食子酸含量2.2%,野生组的鞣质含量11.9%、没食子酸含量1.4%,均达到药典标准,符合药用要求。结论 通过地榆的规范化仿野生种植栽培,分析3组的土壤结构和折干率及有效成分组成中鞣质和没食子酸含量,发现施肥并不能改变地榆中的鞣质含量,与野生品种变化不大,甚至不施肥组没食子酸含量更高,质量更优,但可提高产量,因此,施肥和不施肥都可为地榆可持续开发利用提供优质的药材资源,助力乡村振兴,建议推广仿野生种植栽培。 相似文献
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目的:比较栽培与野生花锚中去甲氧基花锚和花锚苷在不同生长期的含量变化以及在同一生长期内栽培与野生花锚不同部位有效成分的含量变化。方法:RP-—HPE法,使用VP—ODS C18柱(5μm,150mm×4.6mm),流动相为乙睛-0.1%磷酸水溶液,梯度洗脱[0~5.00min乙腈的体分数(以下同)为15%;5.01~14.00min由15%线性递增至25%;14.01~30.00min由25%线性递增至40%],流速为10mL·min,柱温25℃,检测波长254nm。结果:去甲氧基花锚苷和花锚苷分别在0.68~3.40μg和0.74~3.68μg范围内呈良好的线性关系,平均回收率(n=5)分别为99.7%和98.8%。结论:栽培与野生花锚中的有效成分含量均在夏季达到最高,秋季最低;不同的人工管理措施可能造成去甲氧基花锚苷和花锚苷积累的差异。 相似文献
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John R. Grierson Linda Wiens Lanell Peterson Hubert Vesselle 《Journal of labelled compounds & radiopharmaceuticals》2007,50(7):679-682
A prototype blood plasma processor unit was designed and tested for generic PET‐tracer metabolite analyses, using solid‐phase‐extraction cartridges (SepPaks). An assay method for FLT (3′‐deoxy‐3′‐[F‐18]fluorothymidine) and its blood metabolite: FLT‐glucuronide, in serial, patient‐derived samples was developed to evaluate the device. The unit is simple to construct from readily available components and can process up to six samples in parallel for high throughput. The precision of sample results was evaluated in a test–retest trial and was 98%. A syringe pump method for sample application and SepPak elution proved to be a reliable technique. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
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目的探讨临床检验中不合格血液标本的影响原因及相应的防范措施。方法采集950份本院住院患者的各血液标本作为研究对象,对标本中溶血、脂血、凝血等情况及时处理并分析原因。结果对950份血液标本进行总体分析,其中含血清标本650份、血浆标本220份、全血标本80份,不合格标本60份,占标本总数的6.31%;经过分析,不合格标本主要由5种原因造成,分别为溶血10例(16.67%)、凝固5例(8.33%)、抗凝剂错用20例(33.33%)、量的误差18例(30.00%)及其他7例(11.67%)。结论分析临床检验中不合格血液标本的原因,并采取相应的预防措施,对于临床血液检验具有十分重要的意义。 相似文献
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The integrity of urine samples collected from athletes for doping control is essential. The authenticity of samples may be contested, leading to the need for a robust sample identification method. DNA typing using short tandem repeats (STR) can be used for identification purposes, but its application to cellular DNA in urine has so far been limited. Here, a reliable and accurate method is reported for the successful identification of urine samples, using reduced final extraction volumes and the STR multiplex kit, Promega® PowerPlex ESI 17, with capillary electrophoretic characterisation of the alleles. Full DNA profiles were obtained for all samples (n = 20) stored for less than 2 days at 4 °C. The effect of different storage conditions on yield of cellular DNA and probability of obtaining a full profile were also investigated. Storage for 21 days at 4 °C resulted in allelic drop‐out in some samples, but the random match probabilities obtained demonstrate the high power of discrimination achieved through targeting a large number of STRs. The best solution for long‐term storage was centrifugation and removal of supernatant prior to freezing at ‐20 °C. The method is robust enough for incorporation into current anti‐doping protocols, and was successfully applied to 44 athlete samples for anti‐doping testing with 100% concordant typing. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
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Development and validation of an HPLC-UV method for routine trough plasma concentration monitoring of imatinib in Chinese patients with gastrointestinal stromal tumor
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Imatinib is the first-line medication for the treatment of advanced gastrointestinal stromal tumor (GIST). Due to the large inter-individual variability, it is recommended to monitor the trough plasma concentration of imatinib to ensure the efficacy and safety of imatinib therapy. In the present study, an HPLC-UV method was developed and validated for quantitating imatinib in the plasma of Chinese GIST patients. The samples were processed by protein precipitation and then mixed with a neutralizing agent (1.4 g K2CO3 and 0.65 g KCl dissolved in 5 mL ultrapure water). The chromatographic separation was performed on an InertSustain C18 column (250 mm×4.6 mm, 5 µM) maintained at 40 ºC utilizing the mobile phase consisted of 25 mM NH4H2PO4 (pH 8.0)–acetonitrile (61:39, v/v) at a flow rate of 1 mL/min, with an ultraviolet detector set at 265 nm. The method was fully validated according to the published guidelines. The plotted calibration curves were all linear within the range of 50 to 10 000 ng/mL. The validation results of the intra-day and inter-day accuracies and precisions ranged from –5.81% to 6.33%. The extraction recoveries were within the range of 92.38% to 97.86%. All the results of stability studies were all consistent with the acceptance criteria of within ±15%. Finally, the method was successfully applied to trough plasma concentration monitoring of imatinib in 150 Chinese GIST patients orally administrated with imatinib. Incurred sample reanalysis was conducted, results of which were also in accordance with the acceptance criteria of within ±20%. 相似文献
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目的:建立同时测定胡桃楸枝和根中没食子酸、逆没食子酸、1,6-二-O-没食子酰基-β-D-葡萄糖、1,2,6-三-O-没食子酰基-β-D-葡萄糖、1,2,3,6-四-O-没食子酰基-β-D-葡萄糖等5个成分含量的方法,并分析枝和根中上述5个成分的含量差异。方法:采用高效液相色谱法,以Agilent Poroshell 120 SB-C18为色谱柱,以水(含0.2%甲酸)-乙腈(含0.2%甲酸)为流动相进行梯度洗脱,流速为0.3 mL/min,柱温为30℃,检测波长为270 nm,进样量为5μL。利用独立样本t检验和偏最小二乘法判别分析对5个成分含量进行比较分析。结果:没食子酸、逆没食子酸、1,6-二-O-没食子酰基-β-D-葡萄糖、1,2,6-三-O-没食子酰基-β-D-葡萄糖、1,2,3,6-四-O-没食子酰基-β-D-葡萄糖检测质量浓度的线性范围分别为0.989~63.3、1.58~101、1.01~64.7、3.31~212、3.34~214μg/mL(r≥0.9973);精密度、重复性、稳定性(12 h)试验的RSD均小于3.2%,平均加样回收率分别为103.2%、99.1%、101.5%、102.9%、104.7%(RSD分别为4.85%、2.80%、1.31%、2.73%、1.28%)。在胡桃楸枝中,上述成分的平均含量分别为0.2965、0.6211、0.5625、3.1117、3.4513 mg/g;在根中,上述成分的平均含量分别为0.6734、2.7555、0.9640、2.9466、4.8364 mg/g;在枝、根中上述成分的平均总量分别为8.0432、12.1759 mg/g。根中没食子酸、逆没食子酸和1,6-二-O-没食子酰基-β-D-葡萄糖含量均显著高于枝中的含量(P<0.05或P<0.01),而枝和根中其余2个成分的含量及5个成分的总量比较差异均无统计学意义(P>0.05)。偏最小二乘法判别分析所建模型的累积解释度(R2X、R2Y)、累积预测度(Q2)分别为0.943、0.745、0.710;模型载荷图显示,逆没食子酸与原点距离最远,仅逆没食子酸含量的变量投影重要性值大于1。结论:成功建立了可同时测定胡桃楸枝和根中5个成分含量的方法。除1,2,6-三-O-没食子酰基-β-D-葡萄糖外,胡桃楸根中其余4个成分的含量及总含量均高于胡桃楸枝,逆没食子酸是区分两类样品的主要差异成分。 相似文献
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目的:建立测定阴干、真空冷冻干燥、烘箱干燥(30、50、70℃)、晒干等干燥方式下连翘花中4种成分含量的方法并进行比较,以评价不同干燥方式对连翘花主要成分含量的影响,筛选其最佳干燥方式。方法:采用超高效液相色谱法。色谱柱为Waters ACQUITY UPLC BEH C18,流动相为乙腈-0.1%磷酸水溶液(梯度洗脱),流速为0.3 mL/min,检测波长为230 nm,柱温为35℃,进样量为1μL。采用优劣解距离法(TOPSIS)综合分析法计算不同干燥方式与理想方法的欧氏贴近度(Ci),以确定最佳干燥方法。结果:连翘酯苷A、芦丁、连翘酯苷、(+)-松脂素-4-O-β-D-葡萄吡喃糖苷检测进样量的线性范围分别为0.0075~0.0377、0.0274~0.1372、0.0019~0.0095、0.0056~0.0288μg(r均大于0.999);精密度、稳定性(32 h)、重复性试验的RSD均小于2%;加样回收率分别为97.27%~102.53%、100.53%~104.11%、98.45%~104.02%、98.66%~104.82%,RSD均小于3%(n=3)。含量分别为1.6458~4.9879、11.7302~20.9780、0.8755~2.0050、2.3660~5.5357 mg/g。连翘酯苷A以30℃烘箱干燥后含量最高,芦丁、(+)-松脂素-4-O-β-D-葡萄吡喃糖苷均以真空冷冻干燥后含量最高,连翘苷以50℃烘箱干燥后含量最高。TOPSIS分析结果显示,阴干、真空冷冻干燥、烘箱干燥(30、50、70℃)、晒干的Ci分别为0.0799、0.5535、0.4954、0.5038、0.1579、0.2172;Ci排序为真空冷冻干燥>50℃烘箱干燥>30℃烘箱干燥>晒干>70℃烘箱干燥>阴干。结论:所建含量测定方法简便、重复性好,可用于同时测定连翘花中4种成分的含量。连翘花样品以真空冷冻干燥方式最佳,其次为50℃烘箱干燥、30℃烘箱干燥,再次为晒干和烘箱干燥70℃,最后为阴干。 相似文献