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. 2013 Jan 16;6:4. doi: 10.1186/1754-6834-6-4

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Copyright © 2013 Chandel et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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FTIR spectra of Native sugarcane bagasse (black online), Oxalic acid fiber expansion (OAFEX) (red online) and Enzyme digested cellulignin (blue online). 7b), 7c) and 7d) selected regions of Figure 7a. The arrows indicate changes observed through the pretreatment. Hemicellulose and cellulose maxima appeared between frequency ranges of 1000–1200 cm^–1 with maxima at 1037 cm^–1due to C-O stretching. The absorption around 1463 cm^–1 refers to CH₂ and CH₃ indicating the deformation of lignin while 1606 cm^–1 is related to C=C stretching of the aromatic ring (lignin) and C=O stretching.