Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/59509
Title: Production of cellulose nanofibers and sugars using high dry matter feedstock
Keywords: Nanofibras de celulose
Biorefinarias
Desconstrução de celulose
Hidrólise enzimática
Nanocelulose
Cristalinidade da celulose
Polímeros sustentáveis
Cellulose nanofibers
Biorefineries
Cellulose deconstruction
Enzymatic hydrolysis
Nanocellulose
Cellulose crystallinity
Sustainable polymers
Issue Date: 28-Jul-2024
Publisher: De Gruyter
Citation: MOULIN, Jordão Cabral; DURÃES, Alisson Farley Soares; JØRGENSEN, Henning; MOREIRA, Francys K. V.; SANADI, Anand Ramesh; TONOLI, Gustavo Henrique Denzin. Production of cellulose nanofibers and sugars using high dry matter feedstock. Nordic Pulp & Paper Research Journal, Berlim, v. 37, n. 4, 2022. DOI: https://doi.org/10.1515/npprj-2022-0041.
Abstract: Sugars are a sustainable platform for producing chemicals and polymers, while cellulose nanofibers (CNF) are sustainable materials with high specific mechanical properties that have an important role to play in many applications. This study highlights the feasibility of producing sugars and CNF using high dry matter (DM) content of 20 %. A commercial enzyme cocktail at low dosage, 5 mg EP/g DM, and a high 15 mg EP/g DM, were used to hydrolyze the pulp cellulose to produce sugars and CNF. HPLC was used to evaluate the cellulose conversion rate and amount of sugar realized. The CNF were studied using TEM, the diameter of the CNF were measured and estimate the crystallinity. The cellulose conversion plateaued at about 48 h for both the low and high dosage, indicating inhibition due to higher sugar concentration and/or increased recalcitrance of the remaining CNF. The CNF obtained at low enzyme indicated the fibrils were insufficiently separated. At the high dosage, less clumps were observed and with smaller diameter than with the low enzyme dosage. The high dosage also produced CNF with significantly higher crystallinity index, confirming that amorphous cellulose portions readily underwent enzymatic hydrolysis and left more recalcitrant CNF.
Description: As licenças de acesso aberto aplicáveis a este artigo estão em conformidade com as políticas do periódico em que foi publicado, disponíveis no link: https://v2.sherpa.ac.uk/id/publication/36461. Consulta realizada em 25 de set. de 2024.
URI: https://www.degruyter.com/document/doi/10.1515/npprj-2022-0041/html
http://repositorio.ufla.br/jspui/handle/1/59509
Appears in Collections:DCF - Artigos publicados em periódicos

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