Effects of immobilization, pH and reaction time in the modulation of α-, ß- or γ-cyclodextrins production by cyclodextrin glycosyltransferase: Batch and continuous process.
Carbohydr Polym
; 169: 41-49, 2017 Aug 01.
Article
en En
| MEDLINE
| ID: mdl-28504163
This study reports the immobilization of a ß-CGTase on glutaraldehyde pre-activated silica and its use to production of cyclodextrins in batch and continuous reactions. We were able to modulate the cyclodextrin production (α-, ß- and γ-CD) by immobilization and changing the reaction conditions. In batch reactions, the immobilized enzyme reached to maximum productions of 4.9mgmL-1 of α-CD, 3.6mgmL-1 of ß-CD and 3.5mgmL-1 of γ-CD at different conditions of temperature, pH and reaction time. In continuous reactor, varying the residence time and pH it was possible to produce at pH 4.0 and 141min of residence time preferentially γ-CD (0.75 and 3.36mgmL-1 of α- and γ-CD, respectively), or at pH 8.0 and 4.81min α- and ß-CDs (3.44 and 3.51mgmL-1).
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Gamma-Ciclodextrinas
/
Enzimas Inmovilizadas
/
Glucosiltransferasas
Idioma:
En
Revista:
Carbohydr Polym
Año:
2017
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Reino Unido