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Journal > MARINA CHIMICA ACTA > ISOLASI DAN PENENTUAN STRUKTUR METABOLIT SEKUNDER AKTIF DARI SPONS Biemna triraphis ASAL PULAU KAPODASANG (KEPULAUAN SPERMONDE)

 

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MARINA CHIMICA ACTA
Vol 5, No 1
ISOLASI DAN PENENTUAN STRUKTUR METABOLIT SEKUNDER AKTIF DARI SPONS Biemna triraphis ASAL PULAU KAPODASANG (KEPULAUAN SPERMONDE)
Article Info   ABSTRACT
Published date:
24 Apr 2012
 
An isolation and structure determination of secondary metabolites of sponge of Biemna triraphis has been carried out. Separation techniques used consisted of  maceration (ethanol) and fractionation (mixture of n-hexane & acetone), while structural determination were conducted using GC-MS, H-NMR, and IR. Activity tests to Artemia salina were applied. White crystals were found with Rf value 0.68 on TLC with eluent of n-hexane:acetone 5:2 and m.p 1300C. Instrumental analysis indicated fragmentation values (m/e) were  414, 396, 381, 371, 329, 303, 273, 255, 231, 213, 159, 57, and 43 and chemical shift of  H-NMR (δ) were 0.678, 0.819, 0.854, 0.905, 1.008, 3.525  and 5.345 and infra red  absorptions, n (cm-1) were  3432.67,  2931.26,  2869.55,  1635.33,  1457.92,  1380.78, 1056.79, and 802.24. Apparently, β-sitosterol was the most possible candidate for the structure of the compound. Activity test results also indicated its high bioactivity.   Keywords : isolation, sponge, b- sitosterol
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