| 银杏萜内酯A、B、C和白果内酯的热特征分析 |
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| 引用本文： | 吕连媛,张黎明,王艳乔,高文远.银杏萜内酯A、B、C和白果内酯的热特征分析[J].天津科技大学学报,2011(5):9-12,18. |
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| 作者姓名： | 吕连媛 张黎明 王艳乔 高文远 |
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| 作者单位： | 工业发酵微生物教育部重点实验室天津科技大学生物工程学院;天津大学药物科学与技术学院; |
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| 摘 要： | 研究银杏萜内酯A、B、C和白果内酯的热特征并探讨鉴定这些化合物的新方法.用热重分析法(TGA)和差示扫描量热法(DSC)分别对银杏萜内酯A、B、C和白果内酯进行热特征分析.所有样品的热重(TG)和微商热重(DTG)曲线都有各自的谱图特征,其DSC曲线的峰形、峰位置和峰值也有特征;银杏萜内酯A、B、C的稳定性较差,不能准确测得其熔点;白果内酯受热稳定,能够测得其熔点.利用TGA和DSC法容易鉴定银杏萜内酯A、B、C和白果内酯.用TG-DTG法对银杏萜内酯A、B、C和白果内酯在非等温条件下进行热分解动力学研究,把从TG-DTG曲线中得到的数据和30个不同的方程采用Achar微分法和Madhusudanan-Krishnan-Ninan(MKN)积分法对其进行非等温分解动力学研究,得到动力学参数活化能(E和指前因子A)和分解动力学机理及方程.
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| 关 键 词： | 热分析 银杏萜内酯 白果内酯 |
Analysis of Thermal Characterization of Ginkgolides A,B,C and Bilobalide |
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| Lü Lian-yuan,ZHANG Li-ming,WANG Yan-qiao,GAO Wen-yuan.Analysis of Thermal Characterization of Ginkgolides A,B,C and Bilobalide[J].Journal of Tianjin University of Science & Technology,2011(5):9-12,18. |
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| Authors: | Lü Lian-yuan ZHANG Li-ming WANG Yan-qiao GAO Wen-yuan |
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| Institution: | Lü Lian-yuan1,ZHANG Li-ming1,WANG Yan-qiao1,GAO Wen-yuan2(1.Key Laboratory of Industrial Fermentation Microbiology,Ministry of Education,College of Biotechnology,Tianjin University of Science & Technology,Tianjin 300457,China,2.College of Pharmaceutical Science and Technology,Tianjin University,Tianjin 300072,China) |
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| Abstract: | Thermal characterization of ginkgolides A,B,C and bilobalide was to be studied and found a new identification method of these samples.Thermal properties of ginkgolides A,B,C and bilobalide from Ginkgo biloba L.were investigated by using thermogravimetric analysis(TGA)and differential scanning calorimetry(DSC)techniques.All the samples have their own mass loss features in TG and DTG curvest,he DSC curves of these substances have their own characteristic curvi-linear types,peak location and peak values.The th... |
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| Keywords: | thermal analysis ginkgolides bilobalide |
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