Spectroscopic characterization of genetically modified flax fibers

Evolution of the Flax Cell Wall Composition During Development and After Gravitropism by Synchrotron Fluorescence Imaging

“…This result suggests an increase in the cellulose and hemicellulose contents for the bast fibre of tilted plants. Comparable trends have already been reported with some genetically modified flax lines, with modification of the cellulose ultrastructure and allomorphs in particular (Dymińska et al, 2014). For the FG stage, only slight differences were observed between the control and the 90° tilted plant Under our experimental conditions, the 10 cm stem samples collected (starting from 2 cm above the cotyledons), which correspond to the lasting curvature zone when recovery takes place.…”

Evolution of the Flax Cell Wall Composition During Development and After Gravitropism by Synchrotron Fluorescence Imaging

“…This result suggests an increase in the cellulose and hemicellulose contents for the bast fibre of tilted plants. Comparable trends have already been reported with some genetically modified flax lines, with modification of the cellulose ultrastructure and allomorphs in particular (Dymińska et al, 2014). For the FG stage, only slight differences were observed between the control and the 90° tilted plant fibres, corresponding to variations in the absorbance intensity bands assigned to cellulose and hemicelluloses (995, 1030, 1050 and 1060 cm -1 ) (Fig 9B).…”

“…To supplement the deep UV fluorescence examination of the 5 cell types, a study was performed by FTIR microspectroscopy to investigate the polysaccharide composition; this method has been successfully performed on wood fibres (Gierlinger et al, 2008) and flax mutant plants (Dymińska et al, 2014). We focused on the most targeted cell type of the flax stems in the literature, namely, the bast fibres.…”

Influence of the polymorphism of cellulose on the formation of nanocrystals and their application in chitosan/nanocellulose composites

“…All of the samples exhibited similar absorption bands; this confirmed that during chemical treatment with 64% H 2 SO 4 and 16% NaOH, no major harm was done to the chemical structure of cellulose. The band at about 1730 cm −1 may have been due to the COO vibrations of the unconjugated carboxyl group of pectins, which were not removed during cellulose preparation . However, the intensity of this peak was lower for cellulose II and NCC II than for cellulose I and NCC I; this indicated that the chemical treatment was effective.…”