Using the general esterase activity and the sensitivity to dichlorvos (DDVP) as criteria, the esterase obtained from Yumai 39 is determined to be the optimal enzyme for the detection and the optimal operation pH value is 6.5.

• 以总酯酶活力和对敌敌畏的灵敏度为指标；确定了豫麦39中提取的植物酯酶为最佳的农药检测用酶；其最佳检测pH为6.；5