Enzymatic hydrolysis of cellulose nanoplatelets as a source of sugars with the concomitant production of cellulose nanofibrils
| Autor: | Norberto Alan Medina-Aguirre, María Elena Cantú-Cárdenas, Julio Silva-Mendoza, L. Chávez-Guerrero, Nora A. Garcia-Gomez, Selene Sepulveda-Guzman, Sofia Vazquez-Rodriguez |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Polymers and Plastics
02 engineering and technology Cellulase engineering.material 010402 general chemistry 01 natural sciences Nanocellulose chemistry.chemical_compound Crystallinity Hydrolysis Enzymatic hydrolysis Materials Chemistry Cellulose Trichoderma biology Chemistry Organic Chemistry Temperature 021001 nanoscience & nanotechnology Nanostructures 0104 chemical sciences Microcrystalline cellulose engineering biology.protein Biopolymer 0210 nano-technology Nuclear chemistry |
| Zdroj: | Carbohydrate Polymers. 210:85-91 |
| ISSN: | 0144-8617 |
| DOI: | 10.1016/j.carbpol.2019.01.055 |
| Popis: | Cellulose, the most abundant biopolymer on earth, is produced at different ratios by all land plants. Since the morphology and crystallinity of cellulose are key factors involved in its enzymatic hydrolysis, in the present work, we tackled the study of the effects of such variables on the nanocellulose conversion into glucose. Cellulase from Trichoderma sp at 37 °C was used to produce glucose, the best results were found for the cellulose nanoplatelets (S-CNP) after 60 h of hydrolysis, which afforded a conversion of 47% to glucose, in contrast to 15% for the non-purified sample (W-CP) and 22% for microcrystalline cellulose (MCC20) used as control. The X-ray diffractogram recorded on the samples showed an initial crystallinity index of 45%, 54% and 72% for W-CNP, S-CNP and MCC20, respectively. Also, we showed that after 24 h of hydrolysis, long cellulose nanofibrils (∅ ≈ 30 nm) were found as a residue. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect