Comparison of the catalytic activity of PHB-depolymerase, yeast lipase, and papain on poly(ethylene adipate), poly(ethylene succinate), and poly (3-hydroxybutyric acid)-co-(3-hydroxyvaleric acid)

Authors
Batista, A Aponte, MA Diaz, E Reyes, HR
Citation
A. Batista et al., Comparison of the catalytic activity of PHB-depolymerase, yeast lipase, and papain on poly(ethylene adipate), poly(ethylene succinate), and poly (3-hydroxybutyric acid)-co-(3-hydroxyvaleric acid), J POL SC PC, 37(14), 1999, pp. 2581-2585
Citations number
12
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
ISSN journal
0887624X → ACNP
Volume
37
Issue
14
Year of publication
1999
Pages
2581 - 2585
Database
ISI
SICI code
0887-624X(19990715)37:14<2581:COTCAO>2.0.ZU;2-T
Abstract
PHB-depolymerase degraded poly[(3-hydroxybutyric acid)-co-(3-hydroxyvaleric acid)] (PHB/V) significantly. No other enzyme used in this study showed ac tivity toward PHB/V. Weight loss and gel permeation chromatography (GPC) st udies suggested that enzymatic degradation takes place by a surface erosion mechanism. pH studies demonstrated that enzymatic degradation occurs even when little weight loss is observed. Differential scanning calorimetry (DSC ) analysis demonstrated that the enzymes studied prefer to degrade amorphou s regions. (C) 1999 John Wiley & Sons, Inc.