RT info:eu-repo/semantics/article
T1 Bio-2,3-butanediol production from banana waste: Preliminary techno-economic evaluation of processing strategies
A1 Fernández-Delgado, Marina
A1 Rodríguez-Sarmiento, Mercedes
A1 Coral Medina, Jesús David
A1 Lucas, Susana
A1 García-Cubero, Mª Teresa
A1 Coca, Mónica
A1 López-Linares, Juan Carlos
K1 2,3-Butanediol; banana waste; Sustainable bioprocessing;
K1 Simultaneous saccharification and fermentation (SSF); Sequential hydrolysis and fermentation (SHF); Economic analysis
AB This study evaluates different fermentation strategies to produce 2,3-butanediol (2,3-BD) from banana industrywaste, such as whole bananas (fruit + peels) and banana peels, selecting the most favorable from a technical andeconomic point of view. Both residues have enough free sugars (17.8 %–35.8 %), glucan (11.0 %–14.2 %) andhemicellulose (2.8 %–6.3 %), to be promising substrates for 2,3-BD fermentation. Saccharification was studied bycomparing enzymatic hydrolysis, hydrothermal pretreatment, and hydrothermal pretreatment followed byenzymatic hydrolysis. Different fermentation scenarios were also compared regarding the 2,3-BD yield andproductivity: Separate Hydrolysis and Fermentation (SHF), Simultaneous Saccharification and Fermentation(SSF), and direct fermentation without prior saccharification using Paenibacillus polymyxa DSM-365 as the fermenting microorganism. The results showed that the pretreatment step was not necessary to improve the release of fermentable sugars. Enzymatic hydrolysis was the most effective alternative for maximizing sugar recovery, reaching sugar concentrations of 18.1 g/L (recovery: 92.5 %) for banana peels and 33.3 g/L (recovery: ~100 %) for whole bananas. The SSF strategy led to higher 2,3-BD concentrations of 15.0 g/L and 26.6 g/L for banana peels and whole bananas, respectively. The preliminary economic analysis indicated that SSF and direct fermentation could be the more cost-effective process alternatives for banana peels and whole bananas, respectively. Thus, it was demonstrated that banana waste is an interesting resource for the production of 2,3-BD. The bioprocess can be competitive when using a low-cost raw material and reducing the number of process steps compared to traditional technologies.
PB Elsevier
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/70446
UL https://uvadoc.uva.es/handle/10324/70446
LA eng
NO Biomass and Bioenergy 184, 107218
DS UVaDOC
RD 22-nov-2024