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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology Indonesian Journal of Chemistry
Nawi, Liliwirianis
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Immunology & microbiology Veterinary

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Chemotaxonomic Relationship of Oligomer Resveratrol in Three Malaysian Dipterocarpus Species from the Taxonomic Tribe of Dipterocarpaceae Nawi, Liliwirianis; Zain, Wan Zuraida Wan Mohd; Ahmat, Norizan; Osman, Che Puteh; Takaya, Yoshiaki; Kamarozaman, Aisyah Salihah; Adnan, Noorazlina; Azahar, Siti Zakirah
Indonesian Journal of Chemistry Vol 24, No 3 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.82848

Abstract

A phytochemical investigation of three species of Malaysian Dipterocarpus contributed to the isolation of 22 compounds which consist of 15 oligostilbenoids, 2 terpenes, 2 coumarins, and 3 flavonoids. The isolation of flavonoids in the Dipterocarpaceae family is very limited. Moreover, 4-methoxepigallocatechin-3-O-O-(3-methyl) gallate (20) was isolated for the first time in the plant. The occurrence of 4-O-methylgallocatechin (18) and its stereoisomer; 4-O’-methylepigallocatechin (19) was first reported in the Dipterocarpaceae family. This study also reported the existence of several types of oligostilbenoids such as davidiol A (8), stenophyllol B (9), isohopeaphenol (11), resveratrol (1), and ampelopsin E (10) which are the first occurrence in Dipterocarpus genus and suggested a significant chemotaxonomic relationship between Dipterocarpus, more closely to Vatica which is classified under Dipterocarpeae tribe.
ENDEMISM AND CONSERVATION STATUS OF TREE SPECIES OF FRESHWATER SWAMP FOREST, PERAK TENGAH, MALAYSIA Nawi, Liliwirianis; Suratman, Mohd Nazip; Yusof, Farida Zuraina Mohd; Mohamad, Abdul Latiff
BIOTROPIA Vol. 31 No. 2 (2024): BIOTROPIA Vol. 31 No. 2 August 2024
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2024.31.2.1874

Abstract

ARTICLE HIGHLIGHTS- Approximately 3,364 tree individuals with a diameter at breast height (dbh) of 10.0 cm and above were assessed in the Perak Tengah freshwater swamp forest. - The study has recognised 58 species identified are new to Perak.- 72 tree species are listed as endemic, and 194 species are listed in the Red List of Threatened Species by The International Union for Conservation of Nature (IUCN).- This study mphasize the need to preserve ecology and mitigate threats. ABSTRACTThe forests of Peninsular Malaysia have long been recognized as a significant home of endemic species. The purpose of this study was to assess the endemism and conservation status of tree species present in the Perak Tengah freshwater swamp forest. A total of 150 plots (20 m × 20 m) were established in the study area using a random sampling design. Approximately 3,364 tree individuals with diameter at breast height (dbh) of 10.0 cm and above were enumerated in all plots. In the study area, 58 species identified are new to Perak, 72 tree species are listed as endemic, and 194 species are listed in the Red List of Threatened Species by IUCN. Thus, it is crucial to preserve the ecology and lessen the impact of threats in the Perak Tengah freshwater swamp forest, which is home to numerous endemic and endangered species.
Co-Authors Adnan, Noorazlina Ahmat, Norizan Azahar, Siti Zakirah Kamarozaman, Aisyah Salihah Mohamad, Abdul Latiff Osman, Che Puteh Suratman, Mohd Nazip Takaya, Yoshiaki Yusof, Farida Zuraina Mohd Zain, Wan Zuraida Wan Mohd