Azo Congo Red Dye Decolorization by Oyster Mushroom (pleurotus Ostreatus) F209

Background and Objective: Pleurotus ostreatus is known for its high potential as a decolorization and degradation agent for colored organic liquid waste.This study aimed to determine the degradation ability of various types of azo textile dyes by Pleurotus ostreatus strain F209 on azo Congo red dye.Materials and Methods: This research was conducted using an exploratory method.Observations were made on the ability of Pleurotus ostreatus strain F209 to degrade azo Congo red dye with a concentration of 50 ppm dissolved in mineral salts medium (MSM) which was incubated for 15 days.Results: The Congo red decolorization was qualitative, measured through the clear zone formed and had a diameter of 6.78 cm and a colony growth diameter of 6.32 cm.Meanwhile, quantitatively, Pleurotus ostreatus F209 was able to degrade 56% of 50 ppm Congo red.Conclusion: Pleurotus ostreatus F209 was successful in increasing the decolorization percentage of the Congo red dye after 15 days of incubation.