Journal
AGRONOMY-BASEL
Volume 11, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/agronomy11061130
Keywords
FTIR-ATR; saccharification efficiency; cell wall; MAGIC
Categories
Funding
- Galician Government
- Plan Estatal de Ciencia y Tecnologia de Espana [RTI2018-096776-B-C21, RTI2018-096776-B-C22]
- Plan Estatal de Ciencia y Tecnologia de Espana (European Union funds under the FEDER program)
- Project RENATURE-Valorisation of the Natural Endogenous Resources of the Centro Region [CENTRO-01-0145-FEDER-000007]
- Portuguese Foundation for Science and Technology [UIDB00070/2020]
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In this study, high and low saccharification efficiency groups of maize stover showed significant differences in cell wall composition, as revealed by FTIR-ATR spectroscopy. The results provided insights into the relationship between cell wall composition and biorefining potential, and identified new targets for future research on lignocellulosic bioconversion. The application of FTIR-ATR spectroscopy allowed for a rapid and comprehensive assessment of cell wall compositional features in contrasting groups of saccharification efficiency.
With a high potential to generate biomass, maize stover arises as an outstanding feedstock for biofuel production. Maize stover presents the added advantage of being a multiple exploitation of the crop as a source of food, feed, and energy. In this study, contrasting groups of recombinant inbred lines (RILs) from a maize multiparent advanced generation intercross (MAGIC) population that showed variability for saccharification efficiency were screened by FTIR-ATR spectroscopy to explore compositional differences between high and low saccharification yielders. High and low saccharification efficiency groups differed in cell wall compositional features: high saccharification RILs displayed higher proportions of S subunits, aromatic compounds, and hemicellulose as opposed to low saccharification efficiency groups in which FTIR predicted higher proportions of lignin, more precisely lignin being richer in subunits G, and greater proportions of crystalline cellulose and acetyl methyl esters. The application of FTIR-ATR spectroscopy in this material allowed us to obtain a rapid and broad vision of cell wall compositional features in contrasting groups of saccharification efficiency. These results helped us to deepen our knowledge into the relationship between cell wall composition and biorefining potential; they also allowed us to establish new targets for future research regarding lignocellulosic bioconversion.
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