Title of article :
Glucose oxidase release from calcium alginate gel capsules
Author/Authors :
Ana Blandino، نويسنده , , Manuel Mac??as، نويسنده , , Domingo Cantero، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Pages :
6
From page :
319
To page :
324
Abstract :
Diffusion of glucose oxidase within calcium alginate gel capsules has been assayed and the experimental data fitted to a simple semi-empirical power equation, which is used to analyse the solute release from polymeric devices. It was found that an increase in the concentration of sodium alginate and calcium chloride gives rise to a reduction in the enzyme leakage. This was verified when glucose oxidase (GOD) diffusion percentages were compared in capsules with thicknesses of the same order of magnitude but obtained under different experimental conditions. So, the use of sodium alginate and calcium chloride solutions of concentrations 0.5% w/v and 2.6% w/v, respectively, lead to a diffusion percentage of 25 ± 2. This percentage was reduced to 8 ± 3 when sodium alginate and calcium chloride concentrations were fixed at 1% w/v and 4% w/v, respectively, even though the thicknesses of the capsules were of the same order of magnitude.
Keywords :
Glucose oxidase , Calcium alginate gel capsules , Enzyme diffusion , Gelling condition
Journal title :
Enzyme and Microbial Technology
Serial Year :
2000
Journal title :
Enzyme and Microbial Technology
Record number :
1173276
Link To Document :
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