Biosensor is an instrument which is sensitive to biological material and converts its concentration into electrical signals.Organisms such as enzymes, antibodies, tissues, cells and so on can selectively identify spec...Biosensor is an instrument which is sensitive to biological material and converts its concentration into electrical signals.Organisms such as enzymes, antibodies, tissues, cells and so on can selectively identify specific substances. Thesemolecular recognition functions can be combined with the target, such as the binding of antibodies and antigens, and thebinding of enzymes to the substrate through the recognition process. Biosensor has the advantages of high specificity,high sensitivity, fast reaction speed, low cost and easy operation. It has wide application prospect in food, pharmacy,chemical industry, clinical examination, biomedicine, environmental monitoring and so on, especially as a newtechnology means, in the field of modern herbal medicine research influence. Studies have demonstrated that thebiosensing technology has been applied to, traditional Chinese medicine （TCM） targets, isolation and purification ofTCM, the mechanism of TCM, quality control of TCM, the active ingredients detection of TCM and other basicresearches. Biosensor technology has made an important contribution to the research of modern herbal medicine, and hasbecome a Hot-spot in future research.展开更多
目的:建立HPLC-MS/MS同时测定心脑静片中10个成分含量的方法。方法:采用Agilent Zorbax Eclipse Plus C_(18)(50mm×2.1mm,1.8μm)色谱柱,以乙腈-0.1%甲酸水溶液为流动相,梯度洗脱,流速为0.4mL·min^(-1),柱温为30℃,进样量为1...目的:建立HPLC-MS/MS同时测定心脑静片中10个成分含量的方法。方法:采用Agilent Zorbax Eclipse Plus C_(18)(50mm×2.1mm,1.8μm)色谱柱,以乙腈-0.1%甲酸水溶液为流动相,梯度洗脱,流速为0.4mL·min^(-1),柱温为30℃,进样量为1μL;质谱采用负离子扫描,多反应监测(MRM)模式进行定量分析。结果:10个成分在一定浓度范围内与峰面积呈良好线性关系,线性相关系数r均>0.9990;平均回收率(n=6)在94.9%~107.9%,RSD在0.9%~3.4%。2个厂家14批样品中绿原酸、龙胆苦苷、甘草苷、甘草酸、芦丁、迷迭香酸、汉黄芩苷、黄芩素、汉黄芩素、喜果苷的含量分别为0.49~1.24、1.75~4.14、0.06~0.13、0.19~0.48、24.53~35.55、0.56~1.17、6.31~10.22、0.96~2.89、0.48~1.28、0.03~0.08mg·g^(-1)。除喜果苷外,不同厂家样品中其他9个成分的测定结果较为接近。结论:本方法灵敏、准确,可用于心脑静片的质量控制。展开更多
In the present study, we established an ultra-high pressure liquid chromatography-tandem mass spectrometry （UHPLC-MS/MS） method to simultaneously determine 11 compounds in two hospital preparations （Shegan mixture ...In the present study, we established an ultra-high pressure liquid chromatography-tandem mass spectrometry （UHPLC-MS/MS） method to simultaneously determine 11 compounds in two hospital preparations （Shegan mixture and Gandi capsules）, including ephedrine, caffeic acid, ferulic acid, rutin, scutellarin, belamcandin, baicalin, baicalein, astragaloside IV, irisflorentin and wogonin. The chromatographic separation was conducted on ZORBAX SB-C18 （2.1 mm×50 mm, 1.8 μm）. Eleven analytes and IS were detected using ESI and MRM combined with positive and negative scanning switch. Caffeic acid, ferulic acid, scutellarin and belamcandin were detected using negative ion mode detection, whereas ephedrine, rutin, baicalin, baicalein, astragaloside IV, irisflorentin and wogonin were detected using positive ion mode detection. The quantification limits of ephedrine, caffeic acid, scutellarin, belamcandin, baicalin, baicalein, irisfiorentin and wogonin were 4.90×10^-3 ng/mL, 7.80 ng/mL, 6.8 ng/mL, 5.3×10^-2 ng/mL, 4.20×10^-3 ng/mL, 4.6×10^-2 ng/mL, 1.44×10^-4 ng/mL, 4.85 ng/mL, 0.23 ng/mL, 3.18× 10^-4 ng/mL and 2.95× 10^-4 ng/mL, respectively. The detection limits of these components were 2.90× 10^-4 ng/mL, 0.77 ng/mL, 2.0 ng/mL, 0.016 ng/mL, 1.3×10^-3 ng/mL, 3.33×10^-4 ng/mL, 4.32×10^-5 ng/mL, 1.46 ng/mL, 0.07 ng/mL, 9.5×10^-5 ng/mL and 8.84× 10^-5 ng/mL, respectively. All calibration curves showed good linearity （R^2〉0.99） within the test range. The RSD values of intra-day and inter-day precision were less than 5%, and the average recovery rates of the 11 components ranged fi＇om 80% to 120%. In conclusion, our newly developed method was simple, rapid, sensitive and accurate. It could be used to determine ephedrine, caffeic acid, ferulic acid, rutin, scutellarin, belamcandin, baicalin, baicalein, astragaloside IV, irisflorentin and wogonin in Shegan mixture and Gandi capsules, which was helpful for the quality control of drugs.展开更多
文摘Biosensor is an instrument which is sensitive to biological material and converts its concentration into electrical signals.Organisms such as enzymes, antibodies, tissues, cells and so on can selectively identify specific substances. Thesemolecular recognition functions can be combined with the target, such as the binding of antibodies and antigens, and thebinding of enzymes to the substrate through the recognition process. Biosensor has the advantages of high specificity,high sensitivity, fast reaction speed, low cost and easy operation. It has wide application prospect in food, pharmacy,chemical industry, clinical examination, biomedicine, environmental monitoring and so on, especially as a newtechnology means, in the field of modern herbal medicine research influence. Studies have demonstrated that thebiosensing technology has been applied to, traditional Chinese medicine （TCM） targets, isolation and purification ofTCM, the mechanism of TCM, quality control of TCM, the active ingredients detection of TCM and other basicresearches. Biosensor technology has made an important contribution to the research of modern herbal medicine, and hasbecome a Hot-spot in future research.
文摘目的:建立HPLC-MS/MS同时测定心脑静片中10个成分含量的方法。方法:采用Agilent Zorbax Eclipse Plus C_(18)(50mm×2.1mm,1.8μm)色谱柱,以乙腈-0.1%甲酸水溶液为流动相,梯度洗脱,流速为0.4mL·min^(-1),柱温为30℃,进样量为1μL;质谱采用负离子扫描,多反应监测(MRM)模式进行定量分析。结果:10个成分在一定浓度范围内与峰面积呈良好线性关系,线性相关系数r均>0.9990;平均回收率(n=6)在94.9%~107.9%,RSD在0.9%~3.4%。2个厂家14批样品中绿原酸、龙胆苦苷、甘草苷、甘草酸、芦丁、迷迭香酸、汉黄芩苷、黄芩素、汉黄芩素、喜果苷的含量分别为0.49~1.24、1.75~4.14、0.06~0.13、0.19~0.48、24.53~35.55、0.56~1.17、6.31~10.22、0.96~2.89、0.48~1.28、0.03~0.08mg·g^(-1)。除喜果苷外,不同厂家样品中其他9个成分的测定结果较为接近。结论:本方法灵敏、准确,可用于心脑静片的质量控制。
基金Shanghai Science and Technology Commission Research Fund(Grant No.11DZ1972500)Shanghai Health Bureau of Traditional Chinese Medicine Research Fund(Grant No.2012G003A)Shanghai Municipal Education Commission of Outstanding Young Teachers in Special Fund(Grant No.ZZjdyx13092)
文摘In the present study, we established an ultra-high pressure liquid chromatography-tandem mass spectrometry （UHPLC-MS/MS） method to simultaneously determine 11 compounds in two hospital preparations （Shegan mixture and Gandi capsules）, including ephedrine, caffeic acid, ferulic acid, rutin, scutellarin, belamcandin, baicalin, baicalein, astragaloside IV, irisflorentin and wogonin. The chromatographic separation was conducted on ZORBAX SB-C18 （2.1 mm×50 mm, 1.8 μm）. Eleven analytes and IS were detected using ESI and MRM combined with positive and negative scanning switch. Caffeic acid, ferulic acid, scutellarin and belamcandin were detected using negative ion mode detection, whereas ephedrine, rutin, baicalin, baicalein, astragaloside IV, irisflorentin and wogonin were detected using positive ion mode detection. The quantification limits of ephedrine, caffeic acid, scutellarin, belamcandin, baicalin, baicalein, irisfiorentin and wogonin were 4.90×10^-3 ng/mL, 7.80 ng/mL, 6.8 ng/mL, 5.3×10^-2 ng/mL, 4.20×10^-3 ng/mL, 4.6×10^-2 ng/mL, 1.44×10^-4 ng/mL, 4.85 ng/mL, 0.23 ng/mL, 3.18× 10^-4 ng/mL and 2.95× 10^-4 ng/mL, respectively. The detection limits of these components were 2.90× 10^-4 ng/mL, 0.77 ng/mL, 2.0 ng/mL, 0.016 ng/mL, 1.3×10^-3 ng/mL, 3.33×10^-4 ng/mL, 4.32×10^-5 ng/mL, 1.46 ng/mL, 0.07 ng/mL, 9.5×10^-5 ng/mL and 8.84× 10^-5 ng/mL, respectively. All calibration curves showed good linearity （R^2〉0.99） within the test range. The RSD values of intra-day and inter-day precision were less than 5%, and the average recovery rates of the 11 components ranged fi＇om 80% to 120%. In conclusion, our newly developed method was simple, rapid, sensitive and accurate. It could be used to determine ephedrine, caffeic acid, ferulic acid, rutin, scutellarin, belamcandin, baicalin, baicalein, astragaloside IV, irisflorentin and wogonin in Shegan mixture and Gandi capsules, which was helpful for the quality control of drugs.
