HYDROLYSIS OF CUPUAÇU PEEL WITH GREEN SOLVENTS – A SUSTAINABLE ALTERNATIVE IN THE PRODUCTION OF BIOCOMPOSITES

Authors

DOI:

https://doi.org/10.20873/pibic_2024_21078

Abstract

Lignocellulosic biomass is the main agricultural residue, unused or underused on the planet, being classified as a carbon neutral resource and pointed out by many as the energy of the future. In addition, it presents an attractive perspective for the synthesis of bio-based biocompounds with high added value. In this sense, cupuaçu shell stands out for its chemical composition and potential for generating biocompounds. This study aims to evaluate the use of Deep Eutectic Solvents (DES) in the hydrolysis of residual biomass from cupuaçu shell. The levels of carbohydrates (glucose and xylose) and furanic compounds, 5-hydroxymethylfurfural (HMF) and furfural (FF), produced were evaluated. The chemical characterization of the cupuaçu shell was performed followed by acid hydrolysis and with the DESs Choline Chloride and Lactic Acid (ChCl:LA) and Choline Chloride and Oxalic Acid (ChCl:OA). The cupuaçu shell presented cellulose, hemicellulose and lignin contents of 39.41%, 24.68% and 32.30%, respectively. These values ​​qualify the biomass as a promising source for the production of biocompounds in biorefineries. Regarding the production of furanic compounds, the acid hydrolyzate presented concentrations of 269.62 mg/L for HMF and 1109.12 mg/L for FF, values ​​higher than those found after hydrolysis with DES. The hydrolyzate with DES ChCl:OA presented significant HMF values ​​(202.46 mg/L), being close to those of acid hydrolysis. It is concluded that, despite the potential of DESs in the conversion of lignocellulosic biomass, additional optimizations are necessary to improve the efficiency in the production of 5-HMF and FF, evidencing the positive role of green solvents for biotechnology and process sustainability.

Published

2025-04-30

How to Cite

Matos Junior, T. G. de, da Costa, D. M., Santos , J. R., & Scapin, E. (2025). HYDROLYSIS OF CUPUAÇU PEEL WITH GREEN SOLVENTS – A SUSTAINABLE ALTERNATIVE IN THE PRODUCTION OF BIOCOMPOSITES. DESAFIOS - Revista Interdisciplinar Da Universidade Federal Do Tocantins, 12(1), 1–18. https://doi.org/10.20873/pibic_2024_21078

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