Lactose hydrolysis in packed-and fluidized-bed reactors using a recombinant ß-galactosidase immobilized on magnetic core-shell capsules.
Bioprocess Biosyst Eng
; 47(2): 263-273, 2024 Feb.
Article
en En
| MEDLINE
| ID: mdl-38156992
ABSTRACT
The objective of this study was to develop a bioprocess for lactose hydrolysis in diverse dairy matrices, specifically skim milk and cheese whey, utilizing column reactors employing a core-shell enzymatic system featuring ß-galactosidase fused to a Cellulose Binding Domain (CBD) tag (ß-galactosidase-CBD). The effectiveness of reactor configurations, including ball columns and toothed columns operating in packed and fluidized-bed modes, was evaluated for catalyzing lactose hydrolysis in both skim milk and cheese whey. In a closed system, these reactors achieved lactose hydrolysis rates of approximately 50% within 5 h under all evaluated conditions. Considering the scale of the bioprocess, the developed enzymatic system was capable of continuously hydrolyzing 9.6 L of skim milk while maintaining relative hydrolysis levels of approximately 50%. The biocatalyst, created by immobilizing ß-galactosidase-CBD on magnetic core-shell capsules, exhibited exceptional operational stability, and the proposed bioprocess employing these column reactors showcases the potential for scalability.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Leche
/
Lactosa
Límite:
Animals
Idioma:
En
Revista:
Bioprocess Biosyst Eng
Asunto de la revista:
BIOTECNOLOGIA
/
ENGENHARIA BIOMEDICA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Brasil