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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/21162
Title: Structural characterization of rubber from Jackfruit and Euphorbia as a model of natural rubber
Authors: Dararat Mekkriengkrai
Koiichi Ute
Ewa Swiezewska
Tadeusz Chojnacki
Yasuyuki Tanaka
Jitladda T. Sakdapipanich
Mahidol University
Osaka University
Institute of Biochemistry and Biophysics of the Polish Academy of Sciences
Keywords: Biochemistry, Genetics and Molecular Biology;Chemistry;Materials Science
Issue Date: 1-Sep-2004
Citation: Biomacromolecules. Vol.5, No.5 (2004), 2013-2019
Abstract: A structural study of low molecular weight rubbers from Jackfruit (Artocarpus heterophyllus) and Painted spurge (Euphorbia heterophylla) was carried out as model compounds of natural rubber from Hevea brasiliensis. The rubber content of latex from Jackfruit was 0.4-0.7%, which is very low compared with that of 30-35% in the latex from Hevea tree. The rubber from Jackfruit latex was low molecular weight with narrow unimodal molecular weight distribution (MWD), whereas that obtained from E. heterophylla showed very broad MWD. The 1H and 13C NMR analyses showed that Jackfruit rubber consists of a dimethylallyl group and two trans-isoprene units connected to a long sequence of cis-isoprene units. The α-terminal group of Jackfruit rubber was presumed to be composed of a phosphate group based on the presence of 1H NMR signal at 4.08 ppm corresponding to the terminal =CH-CH2OP group. © 2004 American Chemical Society.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=5044237516&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/21162
ISSN: 15257797
Appears in Collections:Scopus 2001-2005

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