Talaromyces sayulitensis as a Potential Bioremediation Agent for Metformin

Area of Science:

• Environmental microbiology
• Bioremediation
• Pharmaceutical pollution

Background:

• Pharmaceutical compounds in aquatic environments pose risks to ecosystems.
• Metformin, an antidiabetic drug, is a common pharmaceutical pollutant.
• Effective remediation strategies are needed to address this growing concern.

Purpose of the Study:

• To investigate the efficacy of the fungal isolate Talaromyces sayulitensis AJ8 in degrading metformin.
• To understand the enzymatic mechanisms involved in metformin biodegradation.
• To confirm metformin degradation using advanced analytical techniques.

Main Methods:

• Culturing Talaromyces sayulitensis AJ8 and exposing it to metformin.
• Measuring degradation efficiency and enzymatic activities (lignin peroxidase, manganese peroxidase, laccase).
• Utilizing HPLC, SEM, FTIR, and LCMS for analysis and confirmation of degradation products.

Main Results:

• Talaromyces sayulitensis AJ8 tolerated metformin up to 100 mg L⁻¹.
• Achieved 93.4% metformin degradation within 8 days.
• Identified methylamine and dimethylamine as primary degradation products, indicating a breakdown pathway.

Conclusions:

• Talaromyces sayulitensis AJ8 exhibits high efficiency in metformin biodegradation.
• The fungus possesses significant ligninolytic and laccase enzyme activities.
• This study highlights the potential of Talaromyces sayulitensis AJ8 for mycoremediation of pharmaceutical pollutants in aquatic environments.