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

Brazilian Journal of Chemical Engineering

J. F. Zhan¹  S. T. Jiang¹  L. J. Pan¹ 

[1],Hefei University of Technology School of Biotechnology and Food Engineering Hefei,PR China

关键词: Phospholipase A1;    PVA;    Sodium alginate;    Immobilization;    Beads stability;   

DOI  :  10.1590/S0104-66322013000400004

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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