Optimisation of synthesis of oligosaccharides derived from lactulose (fructosyl-galacto-oligosaccharides) with β-galactosidases of different origin

Cecilia Guerrero, Carlos Vera, Andrés Illanes

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

32 Citas (Scopus)

Resumen

Batch synthesis of fructosyl-galacto-oligosaccharides from lactulose was performed with commercial β-galactosidase preparations from Aspergillus oryzae, Kluyveromyces lactis and Bacillus circulans. The enzyme from A. oryzae produced the highest yield and specific productivity of synthesis, being selected for further studies. Optimization of fructosyl-galacto-oligosaccharides synthesis was carried out using response surface methodology, considering temperature and initial sugar concentration as variables and yield and specific productivity as response parameters. Maximum yield of 0.41 g g-1 fructosyl-galacto-oligosaccharides was obtained at 70 °C and 60% w/w lactulose concentration, while maximum specific productivity of 1.2 g h -1 mg-1 was obtained at 70 °C and 40% w/w lactulose concentration.

Idioma originalInglés
Páginas (desde-hasta)2225-2232
Número de páginas8
PublicaciónFood Chemistry
Volumen138
N.º4
DOI
EstadoPublicada - 15 jun 2013
Publicado de forma externa

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