Analysis of leaf Epicuticular wax in several Zingiberaceae species from Sarawak

Nur Sulwana, Binti Mohd Hanapi (2010) Analysis of leaf Epicuticular wax in several Zingiberaceae species from Sarawak. [Final Year Project Report] (Unpublished)

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Abstract

Several species belong to Zingiberaceae were collected from various locations in Sarawak. The leaf epicuticular waxes were extracted by using n-hexane and then analyzed with gas chromatography-mass spectrometry. Analysis of epicuticular waxes were carried out to determine the present and amount of n-alkanes. Subsequently, the concentrations of aliphatic hydrocarbon were determined. The total aliphatic hydrocarbons of these nine species ranging from 83.05 Ilglg to 802.71 Ilgig. In the Plagiostachys crocydocalyx and Etlingera elat;or, Cli was the most abundant n-alkane (32.74 Ilg/g and 41.22 Ilglg). In the Z. sp. A, A/pinia /atilabris and A/pinia aquatica, C29 was the highest concentration of aliphatic hydrocarbons with 37.86 Ilgig, 100.44 Ilgig and 134.42 /lg/g, respectively. A/pinia galanga, Etlingera inundata, Etlingera nasllta and Amomum xanthophyllum had high concentration at C25 (29.99 Ilgig), C23 (105.47 /lgig), C21 (52.59 /lgig) and C20 (14.29 Ilg/g). The most abundance n-alkanes in leaf epicuticular waxes are higher molecular weight alkane with odd-numbered carbon, particularly in range of C21 to C33 • The compound identified in the leaf epicuticular waxes was analyzed statistically using cluster analysis to determine their correlation between species. Cluster analysis performed showed a good separation among the species of Zingiberaccae in this study. The data obtained provided further evidence of the chemotaxonomic significance of leaf wax n-alkanes.

Item Type: Final Year Project Report
Additional Information: Project Report (B.Sc.) -- Universiti Malaysia Sarawak, 2010.
Uncontrolled Keywords: Zingiberaceae spp., leaf epicuticular waxes, n-alkanes, gas chromatography-mass spectrometry, chemotaxonomy, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, undergraduate, research, Universiti Malaysia Sarawak.
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Depositing User: Gani
Date Deposited: 01 Aug 2019 01:33
Last Modified: 01 Aug 2019 01:33
URI: http://ir.unimas.my/id/eprint/26226

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