Munawaroh, Chusnul (2009) 4-Aril Kumarin sebagai Senyawa Aktif Antioksidan dari Kulit Batang Garcinia balica Miq. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Satu senyawa baru turunan kumarin telah diisolasi dari kulit batang Garcinia balica Miq, yaitu 7-hidroksi-4-parahidroksifenil-6’,6’-dimetilpirano kumarin (1) yang berupa padatan amorf berwarna kuning dengan titik leleh 230–231°C. Senyawa ini dapat dipisahkan dengan menggunakan metode ekstraksi dengan cara maserasi dan berbagai cara kromatografi. Struktur molekul senyawa (1) ditentukan dengan menggunakan data spektroskopi UV, IR dan ¹H-NMR. Berdasarkan pengujian antioksidan yang telah dilakukan, diketahui bahwa senyawa (1) bersifat aktif sebagai antioksidan dengan nilai IC₅₀ 54,80 µg/ml.
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A new coumarin was isolated from the bark of Garcinia balica Miq, characterized as 7-hydroxy-4-parahydroxy vinyl-6’,6’-dimethylpyrano coumarin (1) and observed as a yellow amorphous powder with mp. 230–231°C. This compound was separated by maseration and rechromatography method. The structure was elucidated by spectroscopic evidence and displayed strong antioxidant activity with IC₅₀ 54,80 µg/ml.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSKI 631.286 Mun e |
| Uncontrolled Keywords: | Gardnia balica Miq, Clusiaceae, kumarin, antioksidan, Garcinia balica Miq, Clusiaceae, coumarin, antioxidant |
| Subjects: | Q Science > QD Chemistry > QD481 Chemical structure. |
| Divisions: | Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | magang . |
| Date Deposited: | 09 Oct 2026 04:13 |
| Last Modified: | 09 Oct 2026 04:13 |
| URI: | http://repository.its.ac.id/id/eprint/145468 |
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