High Resolution Solid State 13C NMR Spectroscopy of Sporopollenins from Different Plant Taxa
AUTOR(ES)
Guilford, William J.
RESUMO
The extremely chemically resistant component of the cell wall of spores, pollens, and some microorganisms, sporopollenin, is generally accepted to be derived from carotenoids or carotenoid esters. However, we report here that 13C NMR analyses of sporopollenin from several sources shows that this widely held view is incorrect, with one possible exception. Sporopollenin is not a unique substance but rather a series of related biopolymers derived from largely saturated precursors such as fatty acids. The biopolymers contain widely varying amounts of oxygen in the form of ether, hydroxyl, carboxylic acid, ester, and ketone groups.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1054442Documentos Relacionados
- Solid-state 13C NMR studies of activated carbons prepared from biomass using different chemical agents.
- Solid state 13C NMR analysis of Brazilian cretaceous ambers
- Characterization of peatland soils from the high andes by 13C NMR spectroscopy.
- High-resolution solid-state NMR of quadrupolar nuclei
- High-resolution solid-state 13C nuclear magnetic resonance of bacterial spores: identification of the alpha-carbon signal of dipicolinic acid.