Evaluation of nutrient supplementation to charcoal-treated and untreated rice straw hydrolysate for xylitol production by Candida guilliermondii

Solange I. Mussatto, Inês Conceicao Roberto

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Xylitol was produced by Candida guilliermondii from charcoal-treated and untreated rice straw hemicellulosic hydrolysate with or without nutrients (ammonium sulphate, calcium chloride, rice bran extract). Both, xylitol yield and volumetric productivity decreased significantly when the nutrients were added to treated and untreated hydrolysates. In the treated hydrolysate, the efficiency of xylose conversion to xylitol was 79% when the nutrients were omitted. The results demonstrated that rice straw hemicellulosic hydrolysate treated with activated charcoal was a cheap source of xylose and other nutrients for xylitol production by C. guilliermondii. The non-necessity of adding nutrients to the hydrolysate media would be very advantageous since the process becomes less costly.
Original languageEnglish
JournalBrazilian Archives of Biology and Technology
Volume48
Issue number3
Pages (from-to)497-502
ISSN1516-8913
DOIs
Publication statusPublished - 2005
Externally publishedYes

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