Manganese peroxidase from white-rot fungus (Phanerochaete chrysosporium) is widely used in environmental biotechnology for the degradation of pollutants. It effectively breaks down complex organic compounds, including lignin, dyes, and polycyclic aromatic hydrocarbons, making it valuable in wastewater treatment and soil remediation. In the pulp and paper industry, it aids in bleaching processes by degrading lignin, reducing the need for harsh chemicals. Additionally, it plays a role in biofuel production by breaking down biomass to enhance the release of fermentable sugars. Its ability to oxidize recalcitrant compounds also makes it useful in bioremediation of contaminated sites, contributing to sustainable environmental management.