Xylitol production from passion fruit peel hydrolysate: Optimization of hydrolysis and fermentation processes

[Display omitted] •Detoxification reduced 89% of phenolics and 100% of formic acid and HMF content.•Biological treatment removed glucose from the medium, reducing the Crabtree effect.•After detoxification the cellular growth increased to approximately 23 g/L.•Detoxification and glucose removal incre...

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Bibliographic Details
Published in:Bioresource technology 2024-12, Vol.414, p.131628, Article 131628
Main Authors: Infante-Neta, Aida Aguilera, de Carvalho, Áthilla Antônio Oliveira, D’Almeida, Alan Portal, Gonçalves, Luciana Rocha Barros, de Albuquerque, Tiago Lima
Format: Article
Language:English
Subjects:
Biorefinery
Crabtree effect
Experimental design
Fermentation
Fruit - chemistry
Fruit - metabolism
Glucose - metabolism
Hemicellulose breakdown
Hydrolysis
Kluyveromyces - metabolism
Passiflora - chemistry
Sulfuric Acids
Xylitol
Xylose - metabolism
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Summary:[Display omitted] •Detoxification reduced 89% of phenolics and 100% of formic acid and HMF content.•Biological treatment removed glucose from the medium, reducing the Crabtree effect.•After detoxification the cellular growth increased to approximately 23 g/L.•Detoxification and glucose removal increased the xylitol production to 14.97 g/L.•The mass balance analysis presented a sustainable xylitol production route from PFP. The passion fruit peel (PFP) has a high cellulose and hemicellulose content, which can be used to produce fermentable sugars. In this context, this study aims to optimize the release of xylose and the production of xylitol from PFP. The optimized conditions were 0.71 M dilute sulfuric acid and a 21.84-minute treatment, yielding 19.03 g/L of xylose (PFP-1). Different PFP hydrolysates were evaluated to improve xylitol production by the yeast Kluyveromyces marxianus ATCC 36907: PFP-2 (PFP1 treated with Ca(OH)2), PFP-3 (PFP-1 treated with Ca(OH)2 and activated carbon), PFP-4 (PFP-3 with biological elimination of glucose with S. cerevisiae, and concentrated at different xylose concentrations). The applied methods resulted in higher xylitol production (14.97 g/L), when PFP hydrolysate was detoxified with Ca(OH)2, treated with activated charcoal for 1 h, biotreated for glucose removal, and concentrated to 40 g/L of xylose.
ISSN:0960-8524
1873-2976
1873-2976
DOI:10.1016/j.biortech.2024.131628