ABSTRAKKeunikan biodiversitas pegunungan Mekongga telah menarik perhatian banyakpeneliti. Tim konservasi dari Amerika dan Indonesia telah menemukan sejumlahtanaman mengandung zat yang memiliki aktivitas antikanker. Penelitian inibertujuan untuk mengidentifikasi senyawa kimia yang menyebabkan tanamantanamanlain memiliki potensial sebagai antikanker berdasarkan uji pendahuluanterhadap aktivitas antioksidan dan efek toksik, salah satunya adalah Jambo-Jambo[Kjelbergiodendron celebicus (Koord) Merr.]. Aktivitas antioksidan dilakukanberdasarkan kemampuan meredam radikal bebas 1,1-difenil-2-pikrilhidrazil(DPPH), sedangkan efek toksik dilakukan dengan metode Brine Shrimp LethalityTest (BSLT). Daun Jambo-Jambo diekstraksi dengan pelarut metanol dan dipartisimenggunakan pelarut n-heksana, etil asetat, butanol dan metanol. Hasil pengujianmenunjukkan bahwa ekstrak metanol mempunyai potensi toksik terhadap larvaArtemia salina dengan nilai LC50 243,5 ppm dan aktivitas antioksidan senilai IC5012,59 ppm. Isolasi dilakukan terhadap fraksi etil asetat menggunakankromatografi kolom silika dan kromatotron. Senyawa murni yang diperolehdiidentifikasi struktur kimianya menggunakan Spektrofotometer UV-Vis, IR,NMR dan LCMS. Didukung dengan data hasil penapisan kimia, diduga senyawatersebut golongan flavonoid yang mempunyai berat molekul 478.

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ABSTRACTThe unique biodiversity of Mekongga mountains have attracted many researches.

Conservation team from US and Indonesia have discovered a number of plants

growing on Mekongga mountains which have anticancer activity. This study is

aimed to identify chemical compounds which have anticancer activity based on

preliminary testing of the antioxidant activity and toxic effects, one of them is

Jambo-Jambo [Kjelbergiodendron celebicus (Koord) Merr.]. The antioxidant

activity of Jambo-jambo leaves was measured by its ability to scavenge free

radical 1,1-diphenyl-2-picrylhydrazyl (DPPH), whereas the toxic effect was

analyzed by Brine Shrimp Lethality Test (BSLT). Jambo-Jambo leaves was

extracted using methanol solvent and its methanolic extract was partitioned using

the n-hexane, ethyl acetate, buthanol and methanol. Test results showed that the

LC50 and IC50 value of its methanolic extract was 243,5 and 12,59 ppm. The ethyl

acetate fraction which showed the best activity was isolated using silica column

chromatography and chromatotron. Pure compounds was obtained by the

chemical structures were identified using Spectrofotometer UV-Vis, IR, NMR and

LCMS. Supported by data on the results of chemical screening, the compounds

were suspected as flavonoid compound which has molecular weight 478.