A comparative study of greener alternatives for nanocellulose production from sugarcane bagasse

Abstract

Use of enzyme for extraction of nanocellulose from sugarcane bagasse is greener alternative. Literature indicates that effectiveness of these enzymes can be improved by auxiliary enzymes or mediators. In the current study, extraction of nanocellulose using laccase with these moderators, auxiliary enzyme glucose oxidase and mediator molecule, ABTS [2,2′-azinobis(3-ethylbenzthiazoline-6-sulfonate)] individually was done. Cellulose and lignin content, FT-IR, TGA and DSC analysis, XRD, SEM and PSA were done. Enzyme moderators improved the performance of laccase in lignin degradation. Lignin and cellulose content, crystallinity were used as parameters to optimize the concentrations, which was found to be ABTS (at 1.4 mM) and glucose oxidase (at 0.15 mg ml−1). At the optimal concentration, nanocellulose was extracted. Properties of nanocellulose obtained from both routes were compared. Size analysis revealed 339 nm and 636 nm for nanocellulose obtained with glucose oxidase and ABTS, respectively. Defibrillation was better in the case of the former one as seen from SEM. Graphical Abstract

CNCs extraction from single‐use cups: effects of grafting it onto MMA monomer

“…25 °C) 101 . CNC 40% and CNC 64% also are comparable to those CNCs obtained through enzymatic hydrolysis using sugarcane bagasse as a source 102 and the obtained CNC from Date Palm waste 103 …”

“…Therefore, the extracted CNC from SUP cups behaves in a very similar way to CNC which has been used for nanocomposites 97 including food packaging films, biomedical equipment, thermal resistive materials, 103 protecting and delivering microbial inoculants for agricultural applications 101 with improved properties; 102 this is the reason why herein this CNC is proposed to be grafted onto MMA monomer.…”

Removal of Chromium from Aqueous System Using Nanocellulose Prepared from Defoliated Terminalia Catappa Leaves

“…Therefore, the present work deals with the synthesis of nanocellulose from defoliated leaves of the Tropical Almond (Terminalia catappa) plant and its use in eliminating a harmful heavy metal i.e., Cr(VI) from the aqueous system, which in turn promotes the circular bio-economy [28][29].…”

“…In the same context, moreover, some lignin peaks visible in the original biomass sample are absent in nanocellulose, suggesting lignin removal due to hydrolysis of the pretreated biomass sample to produce nanocellulose. On the other hand, the peak at around 899 cm -1 is associated with the C-O stretching and C-H vibrations of hemicelluloses [19,[27][28].…”

Extraction and characterization of cellulose from cotton flower burr: a noble cellulose source from agro-waste

“…The introduction of sulfate groups can disrupt these hydrogen bonding interactions, making it more di cult for water molecules to bind to the cellulose structure and reducing moisture content [49,53]. The hydrophilicity of hemicellulose, lignin, and other non-cellulosic components contributes to higher moisture retention in CB [54,55]. The thermal parameters, such as the onset temperature (T onset ), the maximum degradation temperature (T max ), and char residue, are listed in Table 3.…”