Dual phase statistical optimization of biological pre-treatment of sugarcane bagasse with Pycnoporus coccineus MScMS1 for polyhydroxyalkanoates production

2022 ◽  
Vol 302 ◽  
pp. 113948
Author(s):  
Larissa de Souza ◽  
Srividya Shivakumar ◽  
Arijit Das
Keyword(s):  
Sugarcane Bagasse ◽  
Statistical Optimization ◽  
Dual Phase ◽  
Pre Treatment ◽  
Pycnoporus Coccineus

A combination of mild chemical pre-treatment and enzymatic hydrolysis efficiently produces xylooligosaccharides from sugarcane bagasse

2021 ◽  
Vol 291 ◽  
pp. 125972
Author(s):  
Shuai Zhao ◽  
Gui-Ling Zhang ◽  
Chen Chen ◽  
Qi Yang ◽  
Xue-Mei Luo ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Sugarcane Bagasse ◽  
Pre Treatment

scholarly journals High-pressure carbon dioxide/water pre-treatment of sugarcane bagasse and elephant grass: Assessment of the effect of biomass composition on process efficiency

2017 ◽  
Vol 224 ◽  
pp. 639-647 ◽  
Author(s):  
Andréia Toscan ◽  
Ana Rita C. Morais ◽  
Susana M. Paixão ◽  
Luís Alves ◽  
Jürgen Andreaus ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Sugarcane Bagasse ◽  
Process Efficiency ◽  
Biomass Composition ◽  
Elephant Grass ◽  
Pre Treatment

scholarly journals Extraction and characterisation of cellulose nanocrystals (CNCs) from sugarcane bagasse using ionic liquids

2019 ◽  
Author(s):  
◽  
Gcinile Pretty Mdletshe
Keyword(s):  
Electron Microscopy ◽  
Ionic Liquids ◽  
Sugarcane Bagasse ◽  
Cellulose Nanocrystals ◽  
Crystallinity Index ◽  
Attenuated Total Reflection ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Pre Treatment

Lignocellulosic materials have the potential to partly replace fossil-based resources as a source of bio-fuels, bio-chemicals, bio-composites and other bio-products. In this study, ionic liquids (ILs) were used in the pre-treatment of ground sugarcane bagasse (SCB). The ILs used were 1-butyl-3-methylimidazolium hydrogen sulphate or 1-butyl-3-methylimidazolium methyl sulphate at varied times. The ILs were able to remove lignin and hemicellulose from biomass. The IL [bmim][HSO4] had the highest amount of lignin removed after 12 h than all samples. Moreover, it resulted in the greatest cellulose amount. Milled SCB was pre-treated with IL/dimethyl sulphoxide (DMSO) mixtures. The IL [bmim][HSO4] was able to produce cellulose nanocrystals (CNCs) at 90 % IL and 100 % IL. The other IL failed to produce CNCs. Freeze drying the CNC suspension showed morphologies of long fibrous structures and rods which were evident in the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images. The crystallinity index of cellulose in the form of CNCs was calculated from powder X-ray diffraction (P-XRD). Thermal analysis of the CNCs was obtained from thermogravimetric analysis (TGA). Attenuated total reflection-Fourier transform infrared (ATR-FTIR) was used to confirm the absence of lignin and hemicellulose in CNCs. The size distribution of CNCs was obtained by using a dynamic light scattering (DLS) which showed that all the CNCs for the 100 % IL [bmim][HSO4] pre-treatment had a length < 500 nm. It was found that [bmim][HSO4], with no DMSO, was the most effective in terms of cellulose dissolution and the crystal sizes of CNCs. The conversion of cellulose to CNCs was successful with a 80 % and 100 % conversion for 90 % [bmim][HSO4]/DMSO and 100 % [bmim][HSO4], respectively.

scholarly journals Effective fermentation of sugarcane bagasse whole slurries using robust xylose-capable Saccharomyces cerevisiae

2021 ◽  
Author(s):  
Thapelo Mokomele ◽  
Bianca Brandt ◽  
Johann Görgens
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Sugarcane Bagasse ◽  
Initial Screening ◽  
Fed Batch ◽  
Xylose Consumption ◽  
Microbial Inhibitors ◽  
Ethanol Yields ◽  
Pre Treatment ◽  
Whole Slurry ◽  
Simultaneous Saccharification

The pre-treatment of lignocellulose material toward cellulosic bioethanol production releases microbial inhibitors that severely limit the fermentation ability of Saccharomyces cerevisiae. This study evaluated to what degree robust xylose capable strains may improve the fermentability of non-detoxified sugarcane bagasse (SCB) slurries derived from steam explosion (StEX), and further compared this to slurries derived from ammonia fibre expansion (AFEX) pre-treatment. Initial screening in separate hydrolyses and co-fermentation processes using StEx-SCB hydrolysates identified S. cerevisiae TP-1 and CelluXTM4 with higher xylose consumption (≥ 88%) and ethanol concentrations (≥ 50 g/L). Subsequent fermentations compared StEx and AFEX pre-treated SCB material under industrially relevant fed-batch pre-hydrolysis simultaneous saccharification and co-fermentation (PSSCF) conditions, which resulted in only 3 g/L differences in ethanol titres for StEx and AFEX PSSCF fermentations. The study achieved non-detoxified whole-slurry co-fermentation using StEx pre-treated SCB, with higher ethanol yields than previously reported, by utilising robust xylose-capable strains.

scholarly journals Pre-treatment of a sugarcane bagasse-based substrate prior to saccharification: Effect of coffee pulp and urea on laccase and cellulase activities of Pycnoporus sanguineus

2019 ◽  
Vol 239 ◽  
pp. 178-186 ◽  
Author(s):  
Enrique González Bautista ◽  
Enrique Gutierrez ◽  
Nathalie Dupuy ◽  
Isabelle Gaime-Perraud ◽  
Fabio Ziarelli ◽  
...  
Keyword(s):  
Sugarcane Bagasse ◽  
Pycnoporus Sanguineus ◽  
Coffee Pulp ◽  
Pre Treatment

Pre-treatment of sugarcane bagasse with aqueous ammonia–glycerol mixtures to enhance enzymatic saccharification and recovery of ammonia

2019 ◽  
Vol 289 ◽  
pp. 121628 ◽  
Author(s):  
Tingting Shi ◽  
Jianghai Lin ◽  
Jiasheng Li ◽  
Yan Zhang ◽  
Cuifeng Jiang ◽  
...  
Keyword(s):  
Sugarcane Bagasse ◽  
Aqueous Ammonia ◽  
Enzymatic Saccharification ◽  
Pre Treatment

Effect of lime pre-treatment on the synergistic hydrolysis of sugarcane bagasse by hemicellulases

2010 ◽  
Vol 101 (12) ◽  
pp. 4472-4478 ◽  
Author(s):  
Natasha Beukes ◽  
Brett I. Pletschke
Keyword(s):  
Sugarcane Bagasse ◽  
Pre Treatment ◽  
Hydrolysis Of
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