1.
Biotechnol Lett
; 33(3): 525-9, 2011 Mar.
Artigo
em Inglês
| MEDLINE
| ID: mdl-21046198
RESUMO
Triacylglycerol lipase from Pseudomonas cepacia and Fe(3)O(4) magnetic nanoparticles were encapsulated simultaneously within biomimetic silica through the catalysis of polyallylamine. The encapsulation efficiency reached 96% with an activity recovery of 51%. After 5 h at 37°C, the activities of the free and encapsulated lipases decreased by 77 and 16%, respectively. Addition of 10 and 15 mol% trimethylmethoxysilane to tetramethoxysilane during encapsulation doubled the lipase activity while inclusion of 50 and 60 mol% γ-(methacryloxypropyl)-trimethoxysilane tripled the activity. Thus, such encapsulation not only stabilized P. cepacia lipase but also could enhance the activity by varying silane additives.