Open Access

ARTICLE

Biodegradation Pretreatment of Wood of E. grandis, E. dunnii, and E. benthamii to Work in Biorefi nery Processes

Mary Isabel Lopretti^1,2*, Natalia Irene Baldyga³, Maria Gonzalez¹, Laura Beatriz Olazabal³, Marina Graciela Torres³, Fernando Resquin⁴, Leonidas Carrasco⁴

1 Department of Bioprocesses and Biotechnology, Technological Laboratory of Uruguay (LATU), Avenida Italia 6201, 11500 Montevideo, Uruguay
2 Laboratory of Biochemistry and Biotechnology (CIN), Faculty of Science, University of the Republic, Iguá 4225, 11400 Montevideo, Uruguay
3 Laboratory of Analytical Methods Development, Technological Laboratory of Uruguay (LATU), Avenida Italia 6201, 11500 Montevideo, Uruguay
4 National Research Program on Forestry Production, National Agricultural Research Institute (INIA), Andes 1365, 11100 Montevideo, Uruguay

*Corresponding author:

Journal of Renewable Materials 2016, 4(1), 66-71. https://doi.org/10.7569/JRM.2015.634133

Abstract

Nowadays, there is a great interest in using lignocellulosic materials as substrate for the production of biorefi nery products. Eucalypti are good options to use as crops to obtain different kinds of biofuels and derivatives, since their plantations show high adaptation potential to soil and weather conditions in Uruguay. The basic process steps involved in the obtainment of biorefi nery materials are: pretreatment, hydrolysis, fermentation and products separation. As delignifi cation is an important process to obtain biorefi nery products, in this context the evaluation of the biological (BT) and hydrothermal (TT) pretreatment of different species of Eucaliptus was studied. The possibility of obtaining sugars, alcohols and organic acids was the main focus. The results of these investigations show a good production of reducing sugars (4–5 mg/mL for both BT and TT pretreatments), acetic acid (3–8 mg/mL for BT and 3–7 mg/mL for TT) and isopropanol (18–48 mg/mL for BT and 20–30 mg/mL for TT). In conclusion, the results show similar behaviours for BT and TT pretreatments, which is a quite important result since BT is cheaper and cleaner and thus a more attractive technology.

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Keywords

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