The ginkgo terpenoids including bilobalide and ginkgolides are the main pharmaceutical components in the leaves or extracts of Ginkgo biloba L. In this paper, the analysis of bilobalide and ginkgolides in leaves of Gi...The ginkgo terpenoids including bilobalide and ginkgolides are the main pharmaceutical components in the leaves or extracts of Ginkgo biloba L. In this paper, the analysis of bilobalide and ginkgolides in leaves of Ginkgo biloba L. by high performance liquid chromatography (HPLC)-electrospray ionization (ESI)-mass spectrometry (MS) was carried out. The separation was performed on Inertsil ODS3 column with methanol-water (36:64) as mobile phase, with 1 mL·min -1 of flow rate at 35℃. Then the mass spectrum analysis was conducted by ZMD micromass electrospray ionization (ESI)-mass spectrometer (MS). The HPLC total ion chromatogram and selected ion chromatogram (with 325, 407, 423, 439 of m/z) of the sample and ESI-/MS mass spectra of the peaks in the chromatograms were obtained. So bilobalide, ginkgolide A, B, C and J in Ginkgo biloba L. leaves were identified. The method is easy and rapid, with a good accuracy.展开更多
By optimizing the separation and analytical conditions, a reliable, simple and accurate high-performance liquid chromatography（HPLC） method coupled with ultraviolet（UV） and evaporative light scattering detector（E...By optimizing the separation and analytical conditions, a reliable, simple and accurate high-performance liquid chromatography（HPLC） method coupled with ultraviolet（UV） and evaporative light scattering detector（ELSD） was developed for the simultaneous determination of lactones and flavonoid, that is, bilobalide, ginkgolide A, ginkgolide B, and rutin, in more than 10 batches of Ginkgo biloba tablets from different pharmaceutical companies. The method could also be applied to fingerprint research, for a more general evaluation of the quality of this preparation. The separation of the components was achieved on a Hanbon C18 column with gradient elution using water and methanol containing 0.1% trifluoroacetic acid（TFA）. The column temperature was 30 ℃ and the flow-rate of the mobile phase was 0.6 mL/min. The drift tube temperature of the ELSD was set at 100 ℃, and the nitrogen flow-rate was 2 L/min. Good linear relationships were shown with correlation coefficients for analytes exceeding 0.9913. The limits of detection（LODs, S/N=3） and the limits of quantitation（LOQs, S/N=10） were 0.00887-0.0508 μg/μL and 0.0171- 0.0636 μg/μL, respectively, on the column. The relative standard deviations（RSD） of the analytes were less than 3.61% for intraday and 3.70% for interday, respectively. The average recovery rates obtained were in the range of （97.3±4.3）% to （101.9±3.1）% for all the compounds. The results of quantitative and fingerprint analysis proved that the contents of the components were totally similar in the preparation of Ginkgo biloba tablets from the same pharmaceutical company; whereas, they varied significantly in the preparations of Ginkgo biloba tablets from different companies.展开更多
The relationship between the adsorption properties for the active components of ginkgo leaves and the structure of the adsorbents based on urea-formaldehyde condensed polymers was investigated .The results revealed th...The relationship between the adsorption properties for the active components of ginkgo leaves and the structure of the adsorbents based on urea-formaldehyde condensed polymers was investigated .The results revealed that these adsorbents showed very hjgh adsorption selectivity for both flavonol glycosides and terpene lactones contained in ginkgo leaves. Thus, an adsorption separation procedure for purification of ginkgo leaves extracts was developed.展开更多
目的观察银杏二萜内酯葡胺、丁苯酞注射液治疗老年急性缺血性脑卒中(Acute Ischemic Stroke,AIS)患者的临床疗效。方法选择2022年3月—2023年3月徐州市肿瘤医院收治的90例AIS患者为研究对象,按随机数表法分为两组,各45例。在常规治疗基...目的观察银杏二萜内酯葡胺、丁苯酞注射液治疗老年急性缺血性脑卒中(Acute Ischemic Stroke,AIS)患者的临床疗效。方法选择2022年3月—2023年3月徐州市肿瘤医院收治的90例AIS患者为研究对象,按随机数表法分为两组,各45例。在常规治疗基础上,对照组使用丁苯酞治疗,研究组则联用银杏二萜内酯葡胺与丁苯酞治疗。比较两组疗效、国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NIHSS)评分、血液流变学指标水平、不良反应。结果观察组治疗总有效率为91.11%,高于对照组的75.56%,差异有统计学意义(χ^(2)=3.920,P=0.048)。治疗后,研究组的NIHSS评分、血浆黏度、血浆黏度、纤维蛋白原、红细胞压积水平低于对照组,差异有统计学意义(P均<0.05)。两组不良反应总发生率比较,差异无统计学意义(P>0.05)。结论银杏二萜内酯葡胺联合丁苯酞注射液治疗老年AIS患者的临床疗效好,同时对血液流变学有良好的改善效果。展开更多
文摘The ginkgo terpenoids including bilobalide and ginkgolides are the main pharmaceutical components in the leaves or extracts of Ginkgo biloba L. In this paper, the analysis of bilobalide and ginkgolides in leaves of Ginkgo biloba L. by high performance liquid chromatography (HPLC)-electrospray ionization (ESI)-mass spectrometry (MS) was carried out. The separation was performed on Inertsil ODS3 column with methanol-water (36:64) as mobile phase, with 1 mL·min -1 of flow rate at 35℃. Then the mass spectrum analysis was conducted by ZMD micromass electrospray ionization (ESI)-mass spectrometer (MS). The HPLC total ion chromatogram and selected ion chromatogram (with 325, 407, 423, 439 of m/z) of the sample and ESI-/MS mass spectra of the peaks in the chromatograms were obtained. So bilobalide, ginkgolide A, B, C and J in Ginkgo biloba L. leaves were identified. The method is easy and rapid, with a good accuracy.
基金Supported by the Program for New Century Excellent Talents in University of China(No.NCET-06-0515).
文摘By optimizing the separation and analytical conditions, a reliable, simple and accurate high-performance liquid chromatography（HPLC） method coupled with ultraviolet（UV） and evaporative light scattering detector（ELSD） was developed for the simultaneous determination of lactones and flavonoid, that is, bilobalide, ginkgolide A, ginkgolide B, and rutin, in more than 10 batches of Ginkgo biloba tablets from different pharmaceutical companies. The method could also be applied to fingerprint research, for a more general evaluation of the quality of this preparation. The separation of the components was achieved on a Hanbon C18 column with gradient elution using water and methanol containing 0.1% trifluoroacetic acid（TFA）. The column temperature was 30 ℃ and the flow-rate of the mobile phase was 0.6 mL/min. The drift tube temperature of the ELSD was set at 100 ℃, and the nitrogen flow-rate was 2 L/min. Good linear relationships were shown with correlation coefficients for analytes exceeding 0.9913. The limits of detection（LODs, S/N=3） and the limits of quantitation（LOQs, S/N=10） were 0.00887-0.0508 μg/μL and 0.0171- 0.0636 μg/μL, respectively, on the column. The relative standard deviations（RSD） of the analytes were less than 3.61% for intraday and 3.70% for interday, respectively. The average recovery rates obtained were in the range of （97.3±4.3）% to （101.9±3.1）% for all the compounds. The results of quantitative and fingerprint analysis proved that the contents of the components were totally similar in the preparation of Ginkgo biloba tablets from the same pharmaceutical company; whereas, they varied significantly in the preparations of Ginkgo biloba tablets from different companies.
基金Supported by the National Natural Science Foundation of China !(Grant No. 29574164).
文摘The relationship between the adsorption properties for the active components of ginkgo leaves and the structure of the adsorbents based on urea-formaldehyde condensed polymers was investigated .The results revealed that these adsorbents showed very hjgh adsorption selectivity for both flavonol glycosides and terpene lactones contained in ginkgo leaves. Thus, an adsorption separation procedure for purification of ginkgo leaves extracts was developed.
文摘目的观察银杏二萜内酯葡胺、丁苯酞注射液治疗老年急性缺血性脑卒中(Acute Ischemic Stroke,AIS)患者的临床疗效。方法选择2022年3月—2023年3月徐州市肿瘤医院收治的90例AIS患者为研究对象,按随机数表法分为两组,各45例。在常规治疗基础上,对照组使用丁苯酞治疗,研究组则联用银杏二萜内酯葡胺与丁苯酞治疗。比较两组疗效、国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NIHSS)评分、血液流变学指标水平、不良反应。结果观察组治疗总有效率为91.11%,高于对照组的75.56%,差异有统计学意义(χ^(2)=3.920,P=0.048)。治疗后,研究组的NIHSS评分、血浆黏度、血浆黏度、纤维蛋白原、红细胞压积水平低于对照组,差异有统计学意义(P均<0.05)。两组不良反应总发生率比较,差异无统计学意义(P>0.05)。结论银杏二萜内酯葡胺联合丁苯酞注射液治疗老年AIS患者的临床疗效好,同时对血液流变学有良好的改善效果。
