Production of xylitol and bio-detoxification of cocoa pod husk hemicellulose hydrolysate by Candida boidinii XM02G.

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ID: 85274
2018
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Abstract
The use of cocoa pod husk hemicellulose hydrolysate (CPHHH) was evaluated for the production of xylitol by Candida boidinii XM02G yeast isolated from soil of cocoa-growing areas and decaying bark, as an alternative means of reusing this type of waste. Xylitol was obtained in concentrations of 11.34 g.L-1, corresponding to a yield (Yp/s) of 0.52 g.g-1 with a fermentation efficiency (ε) of 56.6%. The yeast was tolerant to inhibitor compounds present in CPHHH without detoxification in different concentration factors, and was able to tolerate phenolic compounds at approximately 6 g.L-1. The yeast was also able to metabolize more than 99% (p/v) of furfural and hydroxymethylfurfural present in the non-detoxified CPHHH without extension of the cell-growth lag phase, showing the potential of this microorganism for the production of xylitol. The fermentation of cocoa pod husk hydrolysates appears to provide an alternative use which may reduce the impact generated by incorrect disposal of this waste.
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Authors Santana, Nivio Batista;Dias, João Carlos Teixeira;Rezende, Rachel Passos;Franco, Marcelo;Oliveira, Larissa Karen Silva;Souza, Lucas Oliveira;
Journal PloS one
Year 2018
DOI 10.1371/journal.pone.0195206
URL
Keywords
ICP-OES food safety solanum lycopersicum agricultural yield gas exchange measurements metal bioaccumulation in plants

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