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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Overcoming challenges in lignocellulosic biomass pretreatment for second-generation (2G) sugar production: emerging role of nano, biotechnological and promising approaches

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Fernandes Antunes, Felipe Antonio [1] ; Chandel, Anuj Kumar [1] ; Teran-Hilares, Ruly [1] ; Ingle, Avinash P. [2] ; Rai, Mahendra [2] ; dos Santos Milessi, Thais Suzane [3] ; da Silva, Silvio Silverio [1] ; dos Santos, Julio Cesar [1]
Total Authors: 8
[1] Univ Sao Paulo, Dept Biotechnol, Engn Sch Lorena, Estr Municipal Campinho, S-N Campinho, BR-12602810 Lorena - Brazil
[2] SGB Amravati Univ, Nanotechnol Lab, Dept Biotechnol, Amravati 444602 - India
[3] Univ Fed Sao Carlos, Dept Chem Engn, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Review article
Source: 3 BIOTECH; v. 9, n. 6 JUN 2019.
Web of Science Citations: 0

Production of green chemicals and biofuels in biorefineries is the potential alternative for petrochemicals and gasoline in transitioning of petro-economy into bioeconomy. However, an efficient biomass pretreatment process must be considered for the successful deployment of biorefineries, mainly for use of lignocellulosic raw materials. However, biomass recalcitrance plays a key role in its saccharification to obtain considerable sugar which can be converted into ethanol or other biochemicals. In the last few decades, several pretreatment methods have been developed, but their feasibility at large-scale operations remains as a persistent bottleneck in biorefineries. Pretreatment methods such as hydrodynamic cavitation, ionic liquids, and supercritical fluids have shown promising results in terms of either lignin or hemicellulose removal, thus making remaining carbohydrate fraction amenable to the enzymatic hydrolysis for clean and high amount of fermentable sugar production. However, their techno-economic feasibility at industrial scale has not been yet studied in detail. Besides, nanotechnological-based technologies could play an important role in the economically viable 2G sugar production in future. Considering these facts, in the present review, we have discussed the existing promising pretreatment methods for lignocellulosic biomass and their challenges, besides this strategic role of nano and biotechnological approaches towards the viability and sustainability of biorefineries is also discussed. (AU)

FAPESP's process: 14/27055-2 - Processes intensification of lignocellulosic biorefineries integrating ethanol and xylitol production steps from sugarcane bagasse in fluidized bed bioreactor
Grantee:Felipe Antonio Fernandes Antunes
Support type: Scholarships in Brazil - Post-Doctorate
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 type: Program for Research on Bioenergy (BIOEN) - Thematic Grants
FAPESP's process: 17/11086-4 - Development of innovative approaches for the main stages of 2G ethanol production: continuous pretreatment using hydrodynamic cavitation and evaluation of SSCF process with interconnected reactors
Grantee:Ruly Teran Hilares
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 16/23758-4 - Production of ethanol and pullulan assisted by unconventional methods in sugarcane bagasse biorefineries: hydrodynamic cavitation reactors and use of visible light with different wavelengths
Grantee:Júlio César dos Santos
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants