1997 Volume 51 Issue 11 Pages 1759-1768
The time-course of the activities of cumulative lignin peroxidase (LiP), cumulative managanase peroxidase (MnP), and cumulative laccase (Lac) from the five fungi having ability for degradation of 2, 7-Dichlorodibenzo-p-dioxin (2, 7-DCDD) was measured in connection with the degradation rate of 2, 7-DCDD with five fungi. The activity of cumulative Lip of a fungus was higher, the degradation rate of 2, 7-DCDD was higher. Correlation between the activity of cumulative Lip and the degradation rate of 2, 7-DCDD was observed. However, the activities of cumulative MnP and cumulative Lac were not correlated to the degradation rate of 2, 7-DCDD.
From the results obtained above, we found the improved screening method of fungi having higher ability for degradation of dioxins. First, screening of fungi having ability for decolorization of dye was carried out by using Remazol brilliant blue R, a kind of dye, as an indicator. In the second screening, fungi having ability for higher activity of cumulative Lip were selected. By using this method, three fungi named 25, 65, and E having higher ability for degradation of 2, 7-DCDD was obtained by the screening from natural world.
