3.5.3.3 6.7 - - 209434 3.5.3.3 6.8 - - 209434 3.5.3.3 7 - - 713439 3.5.3.3 7 - optimum of enzyme activity attributed to the potential positive influence of the dehydrated chitosan on the enzyme activity, suggests that chitosan-SiO2-multiwall carbon nanotubes nanocomposite matrix is suitable for enzyme applications at neutral condition 698318 3.5.3.3 7 9 - 288978 3.5.3.3 7.5 - - 663469, 689820, 733140 3.5.3.3 7.7 - immobilized creatininase-creatinase-sarcosine oxidase enzyme system 288993 3.5.3.3 8 - - 288984, 288986, 288989, 288990