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[Oxidative degradation of dibenzylsulfide]
Zeitschrift Fur Allgemeine Mikrobiologie
|January 1, 1979
Summary
This study shows that a mixed microbial culture, including Pseudomonas aeruginosa, can degrade dibenzylsulfid (DBS), a model crude oil compound. Benzylmercaptoacetic acid (BMA) was the main isolated product, with degradation efficiency influenced by aeration and pH.
Area of Science:
- Environmental microbiology
- Bioremediation of organic sulfur compounds
- Crude oil biodegradation
Background:
- Organic sulfur compounds in crude oil pose environmental challenges.
- Dibenzylsulfid (DBS) serves as a model for studying their microbial degradation.
- Understanding microbial pathways is crucial for bioremediation strategies.
Purpose of the Study:
- To investigate the microbial conversion of dibenzylsulfid (DBS).
- To identify the water-soluble products of DBS degradation.
- To determine factors affecting DBS degradation and product accumulation.
Main Methods:
- Utilized a mixed microbial culture, including Pseudomonas aeruginosa.
- Analyzed degradation products using DC- and IR-spectroscopic techniques.
- Isolated and identified benzylmercaptoacetic acid (BMA) as a key metabolite.
Main Results:
- Dibenzylsulfid (DBS) was converted into several water-soluble organic substances.
- Benzylmercaptoacetic acid (BMA) was the sole isolated product of DBS utilization.
- Degradation efficiency and BMA accumulation were significantly influenced by aeration levels and pH control.
Conclusions:
- Mixed microbial cultures, particularly those with Pseudomonas aeruginosa, can effectively metabolize dibenzylsulfid (DBS).
- Benzylmercaptoacetic acid (BMA) is a primary product of DBS biodegradation.
- Optimizing environmental conditions like aeration and pH is critical for efficient bioremediation of organic sulfur compounds.