ENTRAPMENT OF ATRAZINE CHLOROHYDROLASE IN SOL-GEL GLASS MATRIX

Atrazine chlorohydrolase was purified from cell extracts of Pseundomon as sp, strain ADP and immobilized in sol-gel matrices of different hyd rophobicity. Experiments were made with various amounts of water and u nder different drying conditions. Under optimal conditions, more than 40% of the activity of the free enzyme was maintained in the sol-gel m atrix for more than 3 weeks. The more hydrophobic sol-gel matrices gav e the best results in maintaining atrazine chlorohydrolase activity. ( C) 1998 Elsevier Science B.V. All rights reserved.