Journal
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
Volume 84, Issue 3, Pages 376-381Publisher
WILEY
DOI: 10.1002/jctb.2050
Keywords
xylose; xylitol; fermentation; crystallization; purification
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Funding
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Brazil
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BACKGROUND: This work deals with the xylitol production by biotechnological routes emphasizing the purification process using crystallization. RESULTS: Xylitol volumetric productivity of 0.665 g L-1 h(-1) and yield of 0.7024 g g(-1) were obtained after 92 h fermentation. The fermented broth (61.3 g L-1 xylitol) was centrifuged, treated and concentrated obtain a syrup (745.3 g L-1 xylitol) which was crystallized twice, xylitol crystals with 98.5-99.2% purity being obtained. CONCLUSION: The hypothetical distribution obtained permits the determination of modeling parameters, which make possible the estimation of crystal dominant size from different initial experimental conditions. (C) 2008 Society of Chemical Industry
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