Advanced search
Start date
Betweenand


Cellulose nanostructures obtained using enzymatic cocktails with different compositions

Full text
Author(s):
Bondancia, Thalita J. J. ; Florencio, Camila ; Baccarin, Graziela S. S. ; Farinas, Cristiane S. S.
Total Authors: 4
Document type: Journal article
Source: International Journal of Biological Macromolecules; v. 207, p. 9-pg., 2022-05-15.
Abstract

Cellulose nanostructures obtained from lignocellulosic biomass by the enzymatic route can offer advantages in terms of material properties and processing sustainability. However, most of the enzymatic cocktails commonly used in the saccharification of biomass are designed to promote the complete depolymerization of the cellulose structure into soluble sugars. Here, investigation was made of the way that the action of different commercially available cellulase enzyme cocktails can affect the production of nanocellulose. For this, enzymatic cocktails designed for complete or partial saccharification were compared, using eucalyptus cellulose pulp as a model feedstock. The results showed that all the enzymatic cocktails were effective in the formation of nanocellulose structures, with the complete saccharification enzymes being more efficient in promoting the coproduction of glucose (36.5 g/L, 87% cellulose conversion). The presence of auxiliary enzymes, especially xylanases, acted cooperatively to favor the production of nanostructures with higher crystallinity (up to 79%), higher surface charge (zeta potential up to-30.9 mV), and more uniform dimensions within the size range of cellulose nanocrystals (80 to 350 nm). Interestingly, for the enzymatic cocktails designed for partial saccharification, the xylanase activity was more important than the endoglucanase activity in the production of nanocellulose with improved properties. The findings showed that the composition of the enzymatic cocktails already used for complete biomass saccharification can be suitable for obtaining nanocellulose, together with the release of a glucose stream, in a format compatible with the biorefinery concept. (AU)

FAPESP's process: 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales
Grantee:Roberto de Campos Giordano
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Thematic Grants
FAPESP's process: 19/15400-0 - Optimization of the enzymatic cocktail to obtain nanocellulose from the residual biomass of 2G ethanol processing
Grantee:Graziela Solferini Baccarin
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 19/05159-4 - Development of an encapsulated bioagent with polymers produced from the sugarcane bagasse for application in agriculture
Grantee:Camila Florencio Pereira Lopes
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 19/25261-8 - Nanocellulose production from marine macroalgae of Alagoas coast through the enzymatic route: obtention, characterization and economic feasibility
Grantee:Cristiane Sanchez Farinas
Support Opportunities: Regular Research Grants