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Volume 15
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10.3390/catal15050418
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Article

Hydrodynamic Cavitation-Assisted Photo-Fenton Pretreatment and Yeast Co-Culture as Strategies to Produce Ethanol and Xylitol from Sugarcane Bagasse

by
Carina Aline Prado
1,
Ana Júlia E. B. da Silva
1,
Paulo A. F. H. P. Fernandes
1,
Vinicius P. Shibukawa
1,
Fanny M. Jofre
1,
Bruna G. Rodrigues
1,
Silvio Silvério da Silva
1,
Solange I. Mussatto
2,* and
Júlio César Santos
1,*
1
Department of Biotechnology, Engineering School of Lorena, University of São Paulo, Lorena 12602-810, SP, Brazil
2
Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads, Building 223, 2800 Kongens Lyngby, Denmark
*
Authors to whom correspondence should be addressed.
Catalysts 2025, 15(5), 418; https://doi.org/10.3390/catal15050418
Submission received: 9 March 2025 / Revised: 17 April 2025 / Accepted: 17 April 2025 / Published: 24 April 2025
(This article belongs to the Special Issue Topical Advisory Panel Members' Collection Series: Biomass Catalytic Conversion)
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Abstract

This study explored innovative approaches to produce ethanol and xylitol from sugarcane bagasse using a hydrodynamic cavitation-assisted photo-Fenton process as the pretreatment, and yeast co-culture for hydrolysate fermentation. Pretreatment conditions were optimized (20 mg/L of iron sulfate, pH 5.0, and reaction time of 14 min) resulting in glucan and xylan hydrolysis yields of 96% and 89%, respectively. The hydrolysate produced under these conditions was fermented using a co-culture of Saccharomyces cerevisiae IR2 (an ethanol-producing strain) and Candida tropicalis UFMGBX12 (a xylitol-producing strain). Optimal co-culture conditions consisted of using an inoculum concentration of 1.5 g/L for each yeast strain. After 36 h of fermentation, ethanol and xylitol concentrations reached 20 g/L and 13 g/L, respectively. These results demonstrate the potential of combining hydrodynamic cavitation-assisted photo-Fenton pretreatment with co-culture fermentation to simultaneously produce ethanol and xylitol. This strategy presents a promising approach for enhancing the efficiency of lignocellulosic biorefineries.
Keywords: photo-Fenton process; hydrodynamic cavitation; co-culture; S. cerevisiae; C. tropicalis photo-Fenton process; hydrodynamic cavitation; co-culture; S. cerevisiae; C. tropicalis
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MDPI and ACS Style

Prado, C.A.; da Silva, A.J.E.B.; Fernandes, P.A.F.H.P.; Shibukawa, V.P.; Jofre, F.M.; Rodrigues, B.G.; da Silva, S.S.; Mussatto, S.I.; Santos, J.C. Hydrodynamic Cavitation-Assisted Photo-Fenton Pretreatment and Yeast Co-Culture as Strategies to Produce Ethanol and Xylitol from Sugarcane Bagasse. Catalysts 2025, 15, 418. https://doi.org/10.3390/catal15050418

AMA Style

Prado CA, da Silva AJEB, Fernandes PAFHP, Shibukawa VP, Jofre FM, Rodrigues BG, da Silva SS, Mussatto SI, Santos JC. Hydrodynamic Cavitation-Assisted Photo-Fenton Pretreatment and Yeast Co-Culture as Strategies to Produce Ethanol and Xylitol from Sugarcane Bagasse. Catalysts. 2025; 15(5):418. https://doi.org/10.3390/catal15050418

Chicago/Turabian Style

Prado, Carina Aline, Ana Júlia E. B. da Silva, Paulo A. F. H. P. Fernandes, Vinicius P. Shibukawa, Fanny M. Jofre, Bruna G. Rodrigues, Silvio Silvério da Silva, Solange I. Mussatto, and Júlio César Santos. 2025. "Hydrodynamic Cavitation-Assisted Photo-Fenton Pretreatment and Yeast Co-Culture as Strategies to Produce Ethanol and Xylitol from Sugarcane Bagasse" Catalysts 15, no. 5: 418. https://doi.org/10.3390/catal15050418

APA Style

Prado, C. A., da Silva, A. J. E. B., Fernandes, P. A. F. H. P., Shibukawa, V. P., Jofre, F. M., Rodrigues, B. G., da Silva, S. S., Mussatto, S. I., & Santos, J. C. (2025). Hydrodynamic Cavitation-Assisted Photo-Fenton Pretreatment and Yeast Co-Culture as Strategies to Produce Ethanol and Xylitol from Sugarcane Bagasse. Catalysts, 15(5), 418. https://doi.org/10.3390/catal15050418

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