Vania, Mega (2010) Studi Korelasi Aktivitas Antimalaria Beberapa Senyawa Santon dengan Sifat Elektrokimia secara Voltametri Siklis. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pengujian aktivitas senyawa santon sebagai antimalaria dapat dilakukan secara voltametri siklik. Senyawa santon yang diisolasi aktivitasnya dalam penelitian ini adalah senyawa β-mangostin dan α-mangostin. Senyawa antimalaria yang digunakan sebagai pembanding adalah senyawa-senyawa turunan santon dan biflavonoid yang telah diketahui tingkat keaktifannya. Elektroda kerja yang digunakan dalam uji voltametri siklik adalah elektroda emas, karbon dan polipirol + polidopamin yang akan dimodifikasi, sensitivitas kemudian dalam menguji senyawa antimalaria turunan santon. Pengujian dilakukan menggunakan potensiostat yang dilengkapi dengan scan rate sebesar 100 mV/s dan rentang potensial antara -1 V s/d 1 V. Pengujian voltametri siklik dengan elektroda kerja emas memiliki sensitivitas paling tinggi dengan menunjukkan besar puncak oksidasi lebih besar dibandingkan dengan ketiga elektroda lainnya. Hasil voltametri siklik menunjukkan adanya korelasi antara aktivitas antimalaria senyawa santon yang diuji dan aktivitasnya sebagai antimalaria. Semakin besar puncak oksidasi senyawa santon, maka semakin kecil IC₅₀ senyawa tersebut, atau dengan kata lain aktivitas senyawa tersebut semakin besar sebagai agen antimalaria.
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Assay of activity of the xanthone compounds as antimalarial agent has been carried out by cyclic voltammetric method. Xanthone compounds investigated were β-mangostin and α-mangostin. The antimalarial compound that used as reference compound were derivatives of xanthone and biflavonoid that the level of antimalarial activity were have been known. Working electrodes used in the cyclic voltammetric assays were gold, carbon and polypyrrole + polydopamine, were compared each other to find out their sensitivity to the compounds investigated. Potentiostat were operated at scan rate 100 mV s⁻¹ and potential range from -1 V to 1 V. The assays showed that gold electrode has the highest sensitivity compared to carbon and polypyrrole + polydopamine electrodes. The determination of xanthone compounds by cyclic voltammetric method showed that there was any correlation between its activity to its electrochemical properties. The higher oxidation peak, the lower IC₅₀ of the xanthone compounds or in other word, the higher activity of that compounds as antimalarial agent.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSKi 572 Van s |
| Uncontrolled Keywords: | Voltametri siklik, antimalaria, santon, polipirol, Cyclic voltammetry, antimalarial, xanthone, polypyrrole. |
| Subjects: | Q Science > QD Chemistry > QD481 Chemical structure. |
| Divisions: | Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | magang . |
| Date Deposited: | 15 Oct 2026 02:00 |
| Last Modified: | 15 Oct 2026 02:00 |
| URI: | http://repository.its.ac.id/id/eprint/145591 |
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