A flower-like nanobioreactor was prepared for resolution of ibuprofen in organic solvents. Ultrasound irradiation has been used to improve the enzyme performance of APE1547 (a thermophilic esterase from the archaeon Aeropyrum pernix K1) in the enantioselective esterification. Under optimum reaction conditions (ultrasound power, 225 W; temperature, 45 °C; water activity, 0.21), the immobilized APE1547 showed an excellent catalytic performance (enzyme activity, 13.26 μmol/h/mg; E value, 147.1). After ten repeated reaction batches, the nanobioreactor retained almost 100% of its initial enzyme activity and enantioselectivity. These results indicated that the combination of the immobilization method and ultrasound irradiation can enhance the enzyme performance dramatically.
制备了一种花状纳米
生物反应器,用于在有机溶剂中解析
布洛芬。利用超声辐照提高了 APE1547(一种来自 Aeropyrum pernix K1 古菌的嗜热
酯酶)在对映选择性酯化反应中的酶性能。在最佳反应条件下(超声功率 225 W;温度 45 °C;
水活性 0.21),固定化的 APE1547 表现出优异的催化性能(酶活性 13.26 μmol/h/mg;E 值 147.1)。经过十次重复反应后,纳米
生物反应器几乎保持了 100%的初始酶活性和对映体选择性。这些结果表明,固定化方法与超声波辐照相结合可显著提高酶的性能。