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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Hilman Affandi
Balai Penelitian SEAMEO BIOTROP Bogor
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

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STUDIES ON NATURAL PRODUCTS OF ALBIZIA SP. ARIFNURYADIN, HILMAN AFFANDI; AFFANDI, HILMAN
BIOTROPIA No. 11 (1998)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (171.463 KB) | DOI: 10.11598/btb.1998.0.11.139

Abstract

The bark of  Albizia lebeckioides  and  Albizia falcataria  have been examined for their chemical constituents. A. lebeckioides has yielded the steroidal ketone, stigmasta-4,22-dien-3-one, and a triterpene alcohol as the major neutral components.  A. falcataria  has yielded a similar triterpene  and fatty ester as its major constituents. The toxicity of the compounds was evaluated in bioassay against termites. The results showed that lupenone and stigmastadienone were toxic  ioNeotermes dalbergiae  species. In contrast these compounds were less toxic to Cryptotermes cynocephalus species. Key words: Insecticidal plants / Albizia lebeckioides I Albizia falcataria I Bark / Extracts / Chemical constituents / Toxicity / Termites
SCREENING FOR NATURAL PRODUCTS OF SHOREA Spp. AND ANISOPTERA Spp. OF THE FAMILY DIPTEROCARPACEAE FROM PASIR MAYANG, JAMBI, SUMATERA AFFANDi, HILMAN; NURYADIN, ARIF; PRAYOGA, SUSILO B.
BIOTROPIA No. 12 (1999)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (190.195 KB) | DOI: 10.11598/btb.1999.0.12.144

Abstract

Screening of 12 species of  Shorea  and 2 species of  Anisoptera  from the forest of Pasir Mayang, Jambi with brine shrimp (Anemia salina) lethality bioassay showed that Shorea gibosa and Anisoptera marginata  have sufficient activity for further investigation. Bioassay-guided fractionation of the active extract of  S. gibosa  led to the isolation of stigmasterol and the shoreaphenol. Bioassay-guided fractionation of the active extract of A. marginata resulted in the isolation of lupenone and 3-methoxy-4-hydroxybenzoic acid O-p-C glucopyranoside as the bioactive compound. Key words: Plant natural products/Sftorea gibosalAnisoptera marginatalActive extracts/Bioassay/Pasir Mayang.
Co-Authors ARIFNURYADIN, HILMAN AFFANDI NURYADIN, ARIF PRAYOGA, SUSILO B.