รูปที่ 5.d) แสดงให้เห็นถึง Decolorization time-course of synthetic dyes RB5 ,by immobilized or free laccase in the presence and absence of redox mediator (HBT, 1 mM). พบว่า he immobilized enzyme showed around 31% decolorization in 8 h and 24 h of incubation without HBT. However, decolorization nearly to 1.3-fold by the immobilized enzyme and maximum decolorization of 78.2 % was observed within 8 hr.