Study of ethnobotany and phytochemistry of Pavetta crassipes leaves and Calotropis procera bark from Malawi.

English | 正體中文 | 简体中文 | Items with full text/Total items : 45422/58598 (78%)
Visitors : 2544796 Online Users : 238

RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.

Home ‧ Login ‧ Upload ‧ Help ‧ About ‧ Administer

TMUIR > College of Pharmacy > Graduate Institute of Pharmacognosy Science > Dissertation/Thesis > Item 987654321/51085

Please use this identifier to cite or link to this item: http://libir.tmu.edu.tw/handle/987654321/51085

Title:	Study of ethnobotany and phytochemistry of Pavetta crassipes leaves and Calotropis procera bark from Malawi.
Authors:	約翰 Mponda John-Samson
Keywords:	槲皮素-3-O-芸香糖甙;綠原酸;甲基chlorogenate;Taraxasteryl 醋酸和Calactin;Pavetta crassipes;Calotropis procera;Malawi;Quercetin-3-O-rutinoside;Chlorogenic acid;Methyl chlorogenate;Taraxasteryl acetate and Calactin
Date:	2012-07-13
Issue Date:	2018-10-05 11:50:08 (UTC+8)
Abstract:	This study aims to analyse the phytochemistry of two medicinal plants locally used by herbalists Pavetta crassipes leaves and Calotropis procera bark from Malawi. The specific objectives of the study are: To extract Pavetta crassipes leaves and Calotropis procera bark using 80% methanol and 100% methanol respectively. To isolate compounds using open column and medium pressure liquid chromatography. To elucidate the structures of isolated pure compounds using nuclear magnetic resonance spectral techniques. The research design was an experimental method. The dried Pavetta crassipes leaves (2900g) and Calotropis procera bark (4500g) was extracted with 3L 80% methanol and 100% MeOH respectively, at room temperature after 72 hours. Using various column chromatographical techniques each of the extracts was isolated to get the pure compounds. The isolated pure compounds were elucidated and characterized using Proton Nuclear magnetic Resonance Spectrum (1H NMR), Carbon Nuclear Magnetic Resonance (13C NMR), Heteronuclear Multiple Bond Coherence (HMBC), Heteronuclear Single Quantum Coherence (HSQC), Distortionless Enhancement via Polarization Transfer (DEPT), Nuclear Overhauser Effect Spectroscopy (NOESY) and Correlation Spectroscopy (COSY). The elucidation of pure compounds from Pavetta classipes yielded flavonoid Quercetin-3-O-rutinoside (1), Chlorogenic acid (2) and Methyl chlorogenate (3) and Calotropis procera yielded taraxasteryl acetate (4) and calactin (5).
Description:	碩士委員-鄭瑞棠委員-張永勳委員-李安榮委員-李美賢指導教授-徐鳳麟
Data Type:	thesis
Appears in Collections:	[Graduate Institute of Pharmacognosy Science] Dissertation/Thesis

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	297	View/Open

View Licence

著作權聲明 Copyright Notice

本平台之數位內容為臺北醫學大學所收錄之機構典藏，包含體系內各式學術著作及學術產出。秉持開放取用的精神，提供使用者進行資料檢索、下載與取用，惟仍請適度、合理地於合法範圍內使用本平台之內容，以尊重著作權人之權益。商業上之利用，請先取得著作權人之授權。
The digital content on this platform is part of the Taipei Medical University Institutional Repository, featuring various academic works and outputs from the institution. It offers free access to academic research and public education for non-commercial use. Please use the content appropriately and within legal boundaries to respect copyright owners' rights. For commercial use, please obtain prior authorization from the copyright owner.
瀏覽或使用本平台，視同使用者已完全接受並瞭解聲明中所有規範、中華民國相關法規、一切國際網路規定及使用慣例，並不得為任何不法目的使用TMUIR。
By utilising the platform, users are deemed to have fully accepted and understood all the regulations set out in the statement, relevant laws of the Republic of China, all international internet regulations, and usage conventions. Furthermore, users must not use TMUIR for any illegal purposes.
本平台盡力防止侵害著作權人之權益。若發現本平台之數位內容有侵害著作權人權益情事者，煩請權利人通知本平台維護人員([email protected])，將立即採取移除該數位著作等補救措施。
TMUIR is made to protect the interests of copyright owners. If you believe that any material on the website infringes copyright, please contact our staff([email protected]). We will remove the work from the repository.

Loading...