Chemical modification of the xylan extracted from bagasse pith for preparation of antibacterial carboxymethyl xylan/chitosan film

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YOUSEFI P.; HAMEDI S.; RASOOLY GARMAROODY E.; KOOSHA M.

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Paper Information

Journal: Iranian Journal of Wood and Paper Science Research Year:2020 | Volume:34 | Issue:4 (69) Page(s): 448-460

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Title

Chemical modification of the xylan extracted from bagasse pith for preparation of antibacterial carboxymethyl xylan/chitosan film

Author(s)

YOUSEFI P. | HAMEDI S. | RASOOLY GARMAROODY E. | KOOSHA M. | Issue Writer Certificate

Keywords

Bagasse pithQ1

alkaline extraction of xylanQ1

carboxymethyl xylanQ1

xylan/chitosan filmQ1

carboxymethyl xylan/chitosan filmQ1

antibacterial activityQ1

Abstract

Bio-refinery includes technologies which can convert biomass resources to valuable products. In this study, carboxymethylation of the xylan-rich hemicelluloses extracted from sugarcane Bagasse pith was performed. DS of the carboxymethyl xylan (CMX) was determined at 0. 68 using ICP-OES analysis. It was found that, the presence of absorption bands at 1580 and 1311 cm-1 in the FTIR spectrum of the modified xylan are associated to the stretching vibration of C-O bonds of carboxymethyl groups. The carboxymethyl xylan/chitosan (CMX/CS) films were then prepared by casting method. XRD pattern showed that the intensity of the characteristic peaks of the chitosan was reduced after film preparation which may be due to decreasing the crystalline nature of the film. SEM images showed that the surface of the film is uniform. The exothermic peak in DSC thermograms showed that the films degraded at higher than 200° C. Water vapor permeability (WVP) of the carboxymethyl xylan/chitosan film was measured 0. 84 ± 0. 1 g mm/m2 h kPa. Colorimetric analysis proved that the white index (WI) of the CMX/CS film increased as compared with xylan/chitosan film. On the contrary, the yellow index (YI) of the CMX/CS film decreased. Swelling ratios of the CMX/CS and xylan/CS films were measured as 130. 42 and 95. 71 respectively. The prepared CMX/CS films exhibited higher tensile strength compared to xylan/chitosan film. This may be resulted from the interactions between amine groups of chitosan and carboxyl groups of CMX. CMX/CS film exhibited the stronger antibacterial activity against E. coli compared to S. aureus.

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APA: Copy

YOUSEFI, P., HAMEDI, S., RASOOLY GARMAROODY, E., & KOOSHA, M.. (2020). Chemical modification of the xylan extracted from bagasse pith for preparation of antibacterial carboxymethyl xylan/chitosan film. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, 34(4 (69) ), 448-460. SID. https://sid.ir/paper/403088/en

Vancouver: Copy

YOUSEFI P., HAMEDI S., RASOOLY GARMAROODY E., KOOSHA M.. Chemical modification of the xylan extracted from bagasse pith for preparation of antibacterial carboxymethyl xylan/chitosan film. IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH[Internet]. 2020;34(4 (69) ):448-460. Available from: https://sid.ir/paper/403088/en

IEEE: Copy

P. YOUSEFI, S. HAMEDI, E. RASOOLY GARMAROODY, and M. KOOSHA, “Chemical modification of the xylan extracted from bagasse pith for preparation of antibacterial carboxymethyl xylan/chitosan film,” IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH, vol. 34, no. 4 (69) , pp. 448–460, 2020, [Online]. Available: https://sid.ir/paper/403088/en

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