Artículos de revistas
Batch cooling crystallization of xylitol produced by biotechnological route
Fecha
2009Registro en:
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, v.84, n.3, p.376-381, 2009
0268-2575
10.1002/jctb.2050
Autor
MARTINEZ, Ernesto Acosta
GIULIETTI, Marco
SILVA, Joao Batista de Almeida e
DERENZO, Silas
FELIPE, Maria das Gracas Almeida
Institución
Resumen
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