Second Generation Bioethanol Production from Soybean Hulls Pretreated with Imidazole as a New Solvent

Soybean hulls (SH) are the main industrial waste from soybean processing, representing 5–8% of the whole grain. Imidazole was employed for the hydrothermal pretreatment of SH and further bioethanol production. Different pretreatment temperatures (120 and 180 °C) and times (1 and 3 h) were tested. Lignin removal and glucose yield were significantly influenced by temperature. After 48 h of enzymatic hydrolysis of imidazole-treated SH (120 °C, 1 h), 32.7 g/L of glucose and 9.4 g/L of xylose were obtained. A maximum bioethanol yield of 78.9% was reached after 12 h of fermentation by Saccharomyces cerevisiae using SH enzymatic hydrolysate. Imidazole appears to be a potential alternative to pretreat lignocellulosic wastes such as SH for the production of second-generation biofuels and other biomolecules.

[1]  C. Soccol,et al.  Integrated sugarcane biorefinery for first- and second-generation bioethanol production using imidazole pretreatment , 2022, Journal of Cleaner Production.

[2]  C. Driemeier,et al.  Unveiling the Variability and Multiscale Structure of Soybean Hulls for Biotechnological Valorization , 2022, Waste and Biomass Valorization.

[3]  Luciana Porto de Souza Vandenberghe,et al.  Soybean hulls as carbohydrate feedstock for medium to high-value biomolecule production in biorefineries: A review. , 2021, Bioresource technology.

[4]  W. Zhuang,et al.  Mechanisms of bio-additives on boosting enzymatic hydrolysis of lignocellulosic biomass. , 2021, Bioresource technology.

[5]  Yuanyuan Tu,et al.  Optimizing two green-like biomass pretreatments for maximum bioethanol production using banana pseudostem by effectively enhancing cellulose depolymerization and accessibility , 2021, Sustainable Energy & Fuels.

[6]  C. Soccol,et al.  Imidazole green solvent pre-treatment as a strategy for second-generation bioethanol production from sugarcane bagasse , 2020 .

[7]  Ju‐hyun Yu,et al.  The production of fermentable sugar and bioethanol from acacia wood by optimizing dilute sulfuric acid pretreatment and post treatment , 2020 .

[8]  D. H. Fockink,et al.  Contribution to the production and use of biomass-derived solvents – a review , 2020, Acta Innovations.

[9]  Komal Agrawal,et al.  Current perspective on pretreatment technologies using lignocellulosic biomass: An emerging biorefinery concept , 2020 .

[10]  V. Gupta,et al.  Ionic liquid based pretreatment of lignocellulosic biomass for enhanced bioconversion. , 2020, Bioresource technology.

[11]  L. Ramos,et al.  Pretreatment of cotton spinning residues for optimal enzymatic hydrolysis: A case study using green solvents , 2020, Renewable Energy.

[12]  S. Mali,et al.  Nanofibrillated cellulose obtained from soybean hull using simple and eco-friendly processes based on reactive extrusion , 2019, Cellulose.

[13]  Rafal M. Lukasik,et al.  New two-stage pretreatment for the fractionation of lignocellulosic components using hydrothermal pretreatment followed by imidazole delignification: Focus on the polysaccharide valorization. , 2019, Bioresource technology.

[14]  C. Felby,et al.  Effect of hydrothermal pretreatment severity on lignin inhibition in enzymatic hydrolysis. , 2019, Bioresource technology.

[15]  J. Wen,et al.  Facile fractionation of lignocelluloses by biomass-derived deep eutectic solvent (DES) pretreatment for cellulose enzymatic hydrolysis and lignin valorization , 2019, Green Chemistry.

[16]  Latika Bhatia,et al.  Optimization of simultaneous saccharification and fermentation parameters for sustainable production of ethanol from wheat straw by Pichia stipitis NCIM 3498 , 2018 .

[17]  M. Cerqueira,et al.  Comparison of soybean hull pre-treatments to obtain cellulose and chemical derivatives: Physical chemistry characterization. , 2018, Carbohydrate polymers.

[18]  M. Ayub,et al.  Fermentation of oat and soybean hull hydrolysates into ethanol and xylitol by recombinant industrial strains of Saccharomyces cerevisiae under diverse oxygen environments , 2018 .

[19]  R. Xiao,et al.  Structural elucidation of industrial bioethanol residual lignin from corn stalk: A potential source of vinyl phenolics , 2018 .

[20]  Sung-Koo Kim,et al.  Bioethanol Production from Soybean Residue via Separate Hydrolysis and Fermentation , 2018, Applied Biochemistry and Biotechnology.

[21]  Yuan-xin Wu,et al.  Comparison of three fermentation strategies for alleviating the negative effect of the ionic liquid 1-ethyl-3-methylimidazolium acetate on lignocellulosic ethanol production , 2017 .

[22]  B. Duchemin.  Size, shape, orientation and crystallinity of cellulose Iβ by X-ray powder diffraction using a free spreadsheet program , 2017, Cellulose.

[23]  Rafal M. Lukasik,et al.  Effective Extraction of Lignin from Elephant Grass Using Imidazole and Its Effect on Enzymatic Saccharification To Produce Fermentable Sugars , 2017 .

[24]  B. Chabbert,et al.  Understanding the structural and chemical changes of plant biomass following steam explosion pretreatment , 2017, Biotechnology for Biofuels.

[25]  Shizhong Li,et al.  Bioethanol production using the sodium hydroxide pretreated sweet sorghum bagasse without washing , 2016 .

[26]  J. Dupont,et al.  Liberation of fermentable sugars from soybean hull biomass using ionic liquid 1‐butyl‐3‐methylimidazolium acetate and their bioconversion to ethanol , 2016, Biotechnology progress.

[27]  E. Fortunato,et al.  Imidazole: Prospect Solvent for Lignocellulosic Biomass Fractionation and Delignification , 2016 .

[28]  M. Taherzadeh,et al.  A critical review of analytical methods in pretreatment of lignocelluloses: Composition, imaging, and crystallinity. , 2016, Bioresource technology.

[29]  C. Kennes,et al.  Bioethanol production from biomass: carbohydrate vs syngas fermentation , 2016 .

[30]  H. Bae,et al.  Soybean waste (okara) as a valorization biomass for the bioethanol production , 2015 .

[31]  M. H. L. Silveira,et al.  Current Pretreatment Technologies for the Development of Cellulosic Ethanol and Biorefineries. , 2015, ChemSusChem.

[32]  Rahul Kumar,et al.  Evaluation of recalcitrant features impacting enzymatic saccharification of diverse agricultural residues treated by steam explosion and dilute acid , 2015 .

[33]  M. Grossmann,et al.  Properties of microcrystalline cellulose extracted from soybean hulls by reactive extrusion , 2015 .

[34]  Kan Wang,et al.  Soybean [Glycine max (L.) Merr]. , 2015, Methods in molecular biology.

[35]  Paulo Waldir Tardioli,et al.  Sequential proteolysis and cellulolytic hydrolysis of soybean hulls for oligopeptides and ethanol production , 2014 .

[36]  Menghui Yu,et al.  The correlation between the enzymatic saccharification and the multidimensional structure of cellulose changed by different pretreatments , 2014, Biotechnology for Biofuels.

[37]  T. Heinze,et al.  Molten imidazole – a starch solvent , 2014 .

[38]  Igor Polikarpov,et al.  Evaluating the composition and processing potential of novel sources of Brazilian biomass for sustainable biorenewables production , 2014, Biotechnology for Biofuels.

[39]  A. French.  Idealized powder diffraction patterns for cellulose polymorphs , 2014, Cellulose.

[40]  M. Engelhard,et al.  An advanced understanding of the specific effects of xylan and surface lignin contents on enzymatic hydrolysis of lignocellulosic biomass. , 2013, Bioresource technology.

[41]  M. Sharma.  Xylanases: An Overview , 2013 .

[42]  Sanjoy Ghosh,et al.  Alkaline pretreatment methods followed by acid hydrolysis of Saccharum spontaneum for bioethanol production. , 2012, Bioresource technology.

[43]  P. Souza-Cruz,et al.  Optimization of soybean hull acid hydrolysis and its characterization as a potential substrate for bioprocessing , 2011 .

[44]  S. Alavi,et al.  Thermo-mechanical extrusion pretreatment for conversion of soybean hulls to fermentable sugars. , 2011, Bioresource technology.

[45]  K. Yuen,et al.  Characterization of fibrous residues from agrowastes and the production of nanofibers. , 2010, Journal of agricultural and food chemistry.

[46]  R. Sun,et al.  Characteristics of degraded cellulose obtained from steam-exploded wheat straw. , 2005, Carbohydrate research.