A study on the recovery of xylitol by batch adsorption and crystallization from fermented sugarcane bagasse hydrolysate

Solange I. Mussatto, Júlio C. Santos, Walter C. Ricardo Filho, Silvio S. Silva

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Xylitol was recovered from fermented sugarcane bagasse hemicellulosic hydrolysate by adsorption and crystallization procedures. Silica gel adsorption was employed to purify the broth containing xylitol. In this step, different mixtures of the solvents ethyl acetate, ethanol and acetone were used as eluent, and different proportions of fermented broth volume incorporated per gram of silica gel (Vb/Msg, varying from 1.0 to 2.0 cm3 g−1) were used to pack the column employed as stationary phase bed. The xylitol purification efficiency varied for each mixture of solvent, and for each Vb/Msg ratio used. The purified broth was submitted to different crystallization procedures (cooling, concentration and supplementation with commercial xylitol) aiming to recover xylitol crystals. The best result (60% crystallization yield and 33% total recovery of xylitol from fermented broth) was obtained when the column was packed with a Vb/Msg ratio of 2 cm3 g−1, and the broth was purified with a mixture of ethyl acetate and ethanol, concentrated 6.5-fold, and supplemented with commercial xylitol to force the precipitation.
Original languageEnglish
JournalJournal of Chemical Technology and Biotechnology
Volume81
Issue number11
Pages (from-to)1840-1845
ISSN0268-2575
DOIs
Publication statusPublished - 2006
Externally publishedYes

Fingerprint Dive into the research topics of 'A study on the recovery of xylitol by batch adsorption and crystallization from fermented sugarcane bagasse hydrolysate'. Together they form a unique fingerprint.

Cite this