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Article

Xylitol Production from Exhausted Olive Pomace by Candida boidinii

1
Department of Chemical, Environmental and Materials Engineering, Universidad de Jaén, Campus Las Lagunillas, 23071 Jaén, Spain
2
Campus Las Lagunillas, Center for Advanced Studies in Energy and Environment, Universidad de Jaén, 23071 Jaén, Spain
3
DER-CIEMAT, Avda. Complutense 40, 28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(19), 6966; https://doi.org/10.3390/app10196966
Received: 16 September 2020 / Revised: 25 September 2020 / Accepted: 26 September 2020 / Published: 5 October 2020
(This article belongs to the Special Issue Techniques for Sustainable Processing of Natural Resources II)
In this work, the production of xylitol from a hemicellulosic hydrolysate of exhausted olive pomace (EOP), a residue originated in the olive oil production process by Candida boidinii, was assessed. The hydrolysate was obtained by dilute acid pretreatment of EOP at 170 °C and 2% H2SO4 (w/v). A previous detoxification step of the hydrolysate was necessary, and its treatment with activated charcoal and ion-exchange resin was evaluated. Prior to fermentation of the hydrolysate, fermentation tests in synthetic media were performed to determine the maximum xylitol yield and productivity that could be obtained if inhibitory compounds were not present in the medium. In addition, the glucose existing in the media exerted a negative influence on xylitol production. A maximum xylitol yield of 0.52 g/g could be achieved in absence of inhibitor compounds. Fermentation of the hemicellulosic hydrolysate from EOP after detoxification with ion-exchange resin resulted in a xylitol yield of 0.43 g/g. View Full-Text
Keywords: exhausted olive pomace; hemicellulosic hydrolysate; synthetic media; xylitol; Candida boidinii exhausted olive pomace; hemicellulosic hydrolysate; synthetic media; xylitol; Candida boidinii
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MDPI and ACS Style

López-Linares, J.C.; Ruiz, E.; Romero, I.; Castro, E.; Manzanares, P. Xylitol Production from Exhausted Olive Pomace by Candida boidinii. Appl. Sci. 2020, 10, 6966. https://doi.org/10.3390/app10196966

AMA Style

López-Linares JC, Ruiz E, Romero I, Castro E, Manzanares P. Xylitol Production from Exhausted Olive Pomace by Candida boidinii. Applied Sciences. 2020; 10(19):6966. https://doi.org/10.3390/app10196966

Chicago/Turabian Style

López-Linares, Juan C., Encarnación Ruiz, Inmaculada Romero, Eulogio Castro, and Paloma Manzanares. 2020. "Xylitol Production from Exhausted Olive Pomace by Candida boidinii" Applied Sciences 10, no. 19: 6966. https://doi.org/10.3390/app10196966

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