Please use this identifier to cite or link to this item:
http://repository.ipb.ac.id/handle/123456789/124067| Title: | Metabolit Sekunder dari Ranting Pinus Klinki (Araucaria hunsteinii K. Schum.) |
| Authors: | Ilmiawati, Auliya Sugita, Purwantiningsih Ningtias, Widya Sekar Ayu |
| Issue Date: | 2023 |
| Publisher: | IPB University |
| Abstract: | Araucaria hunsteinii K. Schum. atau pinus klinki merupakan tumbuhan yang
tersebar di kawasan Malesia, salah satunya dapat ditemukan di Kebun Raya Bogor,
Indonesia. Metabolit sekunder pada daun tumbuhan ini sudah pernah dilaporkan,
yaitu golongan terpenoid dan biflavonoid, tetapi belum ada informasi mengenai
bagian rantingnya. Oleh karena itu, penelitian ini bertujuan mengisolasi metabolit
sekunder dari ranting pinus tersebut dan menentukan struktur senyawanya. Ekstrak
ranting yang merupakan fraksi larut aseton, kemudian difraksionasi dengan
kromatografi kolom gravitasi Sephadex LH-20 dan dimurnikan dengan
kromatografi lapis tipis preparatif. Isolat dikarakterisasi menggunakan
spektrofotometer ultraviolet-sinartampak, spektrometer inframerah, dan
spektrometer massa. Biflavonoid berhasil diisolasi pada ranting, yaitu 4',4''',7,7''-
tetra-O-metilkupresuflavon. Senyawa tersebut pernah dilaporkan pada bagian
daunnya, tetapi baru pertama kali ditemukan pada ranting. Penelitian ini juga
menemukan artefak, yaitu di-2-propilpentilftalat, yang diduga berasal dari
kontaminan pada pelarut yang digunakan selama proses isolasi. Araucaria hunsteinii K. Schum. or pinus klinki, is a plant spread in the Malesia area, one of which can be found in the Bogor Botanical Garden, Indonesia. Secondary metabolites in the leaves of this plant have been reported, namely the terpenoid and biflavonoid groups, but there is no information about the twigs. Therefore, this study aims to isolate secondary metabolites from the pine twigs and determine the structure of the compound. The twig extract that was a soluble fraction of acetone, was fractionated by Sephadex LH-20 gravity column chromatography and purified by preparative thin-layer chromatography. The isolates were characterized using ultraviolet-visible-light spectrophotometers, infrared spectrometers, and mass spectrometers. Biflavonoids isolated from the twigs is 4',4'',7''-tetra-O-methylcupressuflavone. The compound has been reported on leaves but was first discovered in twigs. The study also found an artifact, di-2- propylpentilphthalate, thought to have come from a contaminant in the solvent used during the isolation process. |
| URI: | http://repository.ipb.ac.id/handle/123456789/124067 |
| Appears in Collections: | UT - Chemistry |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Cover_Widya Sekar Ayu Ningtias_G44190038.pdf Restricted Access | Cover | 532.63 kB | Adobe PDF | View/Open |
| Fulltext_Widya Sekar Ayu Ningtias_G44190038.pdf Restricted Access | Fullteks | 1.16 MB | Adobe PDF | View/Open |
| Lampiran_Widya Sekar Ayu Ningtias_G44190038.pdf Restricted Access | Lampiran | 221.32 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.