Immobilization of phospholipase a1 using a polyvinyl alcohol-alginate matrix and evaluation of the effects of immobilization

AUTOR(ES)

Zhan, J. F., Jiang, S. T., Pan, L. J.

FONTE

Braz. J. Chem. Eng.

DATA DE PUBLICAÇÃO

2013-12

RESUMO

The paper presents the synthesis and performance of an immobilized phospholipase A1 with practical application for oil degumming. The polyvinyl alcohol (PVA) had a number of properties indicating this polymer as a good enzyme carrier. The combination with alginate made a macro-porous structure, evidenced by SEM analyses. When the process time in boric acid solution was 30 minutes, the results revealed that beads prepared with 10% (w/v) PVA and 2% (w/v) sodium alginate in 4% (w/v) boric acid and 2% (w/v) calcium chloride solution exhibited high immobilized enzyme activity, immobilization yield and stability. The pH and temperature optimum for the PVA-alginate immobilized phospholipase A1were 5.6 and 58 °C, respectively. The enzyme immobilized in the beads retained 50.37% of the initial activity in the eighth cycle. The enzyme biocatalyst immobilized in the beads retained 78.58% of the initial activity after storing 6 weeks at 4 °C.

Documentos Relacionados

• Immobilization of ammonia-oxidizing bacteria by polyvinyl alcohol and sodium alginate
• Time domain NMR evaluation of poly(vinyl alcohol) xerogels
• Enhanced Glucose Sensor Linearity Using Poly(Vinyl Alcohol) Hydrogels
• STIMULATION OF THE GROWTH OF A STRAIN OF CORYNEBACTERIUM DIPHTHERIAE BY POLYVINYL ALCOHOL1
• Identification of a phosphatidic acid-preferring phospholipase A1 from bovine brain and testis.