“…Moreover, this support has been used to yield a very intense enzyme-support multipoint attachment between the enzyme and the support, and a fully inert surface after immobilization. Thus, many enzymes have been stabilized using this technique, e.g., Penicillin G acylase from Escherichia coli [26] and K. citrophila [27], trypsin [28], chymotrypsin [29], alcalase [30], carboxypeptidase A [31], FNR NADP-reductase [32], esterase [33], thermolysin [34], DAAO [35], catalases [36,37], and lipases from different sources [18,38], urokinase [39], l-aminoacylase [40], chitosinase [41]. The final reduction of the immobilized preparations with sodium borohydride permits to have very stable secondary amino bonds and very inert hydroxy groups in the support surface (Fig.…”