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Investigation of Crystallinity Characterization of Bamboo Fibers Using Xylanase from Aspergillus nidulans

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The Crystallinity phenomenon refers to a crucial feature of lignocellulosic biomass due to its substantial impact on enzyme treatment. The X-ray diffraction analysis is applied to determine the parameters characteristic of the bamboo fibers such as crystallinity index, crystalline %, crystallite size as well as Z-value. Results of the X-ray diffraction analysis appeared maximum in treated bamboo fiber at temperature 40 ºC. They estimated the highest value in 57% of crystallinity index, 72% of crystalline %, 3.91nm of crystallite size and-34.6 of Z-value in treated bamboo fiber than untreated bamboo fiber. This increase could be attributed to the completely removal of amorphous non-cellulosic compounds by xylanase treatment, which would give better smoothing of the surface of bamboo fiber.
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... The CI of the BF, O-BF, and DIPA-BF was 49.56%, 48.92%, and 50.11%, respectively, comparable to the findings on Phyllostachys heterocycla (37.5-62%) [75], Iraq's agricultural BF (57%) [76], and Phyllostachys pubescens Mazel (50%) [77]. However, the oxidation process during the surface modification slightly reduced the CI of BF; still, CI of BF and DIPA-BF was nearly equal, confirming no significant impact of DIPA modification on the crystallinity ...
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