LAPSE:2023.35084
Published Article
LAPSE:2023.35084
Integrated Biobased Processes for Nanocellulose Preparation from Rice Straw Cellulose
April 28, 2023
High-potential nanomaterials were derived from rice straw using the integrated biobased processes of enzymatic hydrolysis with green organic acid hydrolysis assisted with ultrasonication pretreatment. The optimization condition of nanocellulose preparation by enzymatic hydrolysis via central composite design (CCD) achieved a maximum nanocellulose content of 32.37 ± 0.47% using a cellulase concentration of 107.06 U/mL and 0.13% (w/w) of rice straw cellulose. The ultrasonication-assisted pretreatment prior to enzymatic hydrolysis improved nanocellulose preparation to 52.28 ± 1.55%. Integration with oxalic acid hydrolysis increased the nanocellulose content to 64.99 ± 0.16%. Granular nanocellulose was obtained and consisted of a 105−825 nm nanosize with a zeta potential value of −34.5 mV, and nanocellulose suspension showed high stability without aggregation. In addition, the remaining rice straw cellulose after oxalic acid was microcrystalline nanocellulose. All prepared nanocellulose represented a functional group as original cellulose but had a low crystallinity index (CrI) of 15.68% that could be classified as amorphous nanocellulose. Based on their characteristics, all nanocellose could be further applied in food, cosmetics, and pharmaceuticals. Moreover, the results indicated that the rice straw could be an alternative non-edible cellulose source for preparing potential nanocellulose via a controlled hydrolysis process.
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Keywords
amorphous nanocellulose, biobased process, cellulose, nanocellulose, oxalic acid hydrolysis, rice straw, ultrasonication
Subject
Suggested Citation
Jirathampinyo S, Chumchoochart W, Tinoi J. Integrated Biobased Processes for Nanocellulose Preparation from Rice Straw Cellulose. (2023). LAPSE:2023.35084
Author Affiliations
Jirathampinyo S: Interdisciplinary Program in Biotechnology, Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand
Chumchoochart W: Interdisciplinary Program in Biotechnology, Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand
Tinoi J: Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand [ORCID]
Chumchoochart W: Interdisciplinary Program in Biotechnology, Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand
Tinoi J: Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand [ORCID]
Journal Name
Processes
Volume
11
Issue
4
First Page
1006
Year
2023
Publication Date
2023-03-26
Published Version
ISSN
2227-9717
Version Comments
Original Submission
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PII: pr11041006, Publication Type: Journal Article
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LAPSE:2023.35084
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doi:10.3390/pr11041006
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[v1] (Original Submission)
Apr 28, 2023
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Apr 28, 2023
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