SUMMARY Reactive black 5 (RB5) is a synthetic azo type dye that is widely used in the textile industry for dyeing fabrics. One method that can be used to degrade synthetic dyes such as RB5 is to use biological methods, namely directly using live fungal cells or using laccase enzymes. Trichoderma asperellum is a fungus that can produce laccase enzymes. T. asperellum LBKURCC1 is a fungus isolateā¦