Structural characterization of rubber from jackfruit and euphorbia as a model of natural rubber

Biomacromolecules
Dararat MekkriengkraiJitladda T Sakdapipanich

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 alpha-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.

References


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Citations

May 15, 2012·Biochimica Et Biophysica Acta·Jaruwan SiritapetaweeSompong Thammasirirak
May 16, 2007·Journal of Bioscience and Bioengineering·Jitladda Tangpakdee Sakdapipanich
Dec 23, 2014·Plant Physiology and Biochemistry : PPB·Delia SpanòRosaria Medda
Apr 2, 2020·Annual Review of Biochemistry·Satoshi Yamashita, Seiji Takahashi
Feb 2, 2020·Applied Biochemistry and Biotechnology·Guo Yong YewJo-Shu Chang
Aug 11, 2021·Plants·Antonella FaisFrancesca Pintus
Oct 20, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Sirirat KumarnJitladda Sakdapipanich

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