Figure 12
From: Flavonoid engineering of flax potentiate its biotechnological application
The IR analysis of fibres. (A) The IR spectra of the flax fibres obtained from the control and transgenic flax (W92.40, W92.72) (B) The deconvolution of the IR contours of control and transgenic (W92) flax fibres in the regions: 3040 - 3680 and 1500 - 1800 cm-1 into Lorenz components.The broad absorption band at 3400 cm-1 corresponds to the stretching ν(OH) mode of the free hydroxyl groups and those involved in the intra- and inter-molecular hydrogen bonds. The 1400 - 1800 cm-1 region of IR spectra characterize the pectin and lignin constituents of fibres. The component at about 1736 cm-1 corresponds to the νas(COO) vibrations of unconjugated carboxyl group of pectins. The position of band at 1662 cm-1 and 1608 and 1504 cm-1 are characteristic for lignins.