Summary Iso ‐alkanes comprise a substantial proportion of petroleum and refined products that impact the environment, but their fate is cryptic under methanogenic conditions. We investigated methanogenic biodegradation of C 7 and C 8 iso ‐alkanes found in naphtha, specifically 2‐methylhexane, 3‐methylhexane, 2‐methylheptane, 4‐methylheptane and 3‐ethylhexane. These were incubated as a mixture or individually with enrichment cu...

Summary Anaerobic benzene degradation was studied with a highly enriched iron‐reducing culture (BF) composed of mainly Peptococcaceae‐ related Gram‐positive microorganisms. The proteomes of benzene‐, phenol‐ and benzoate‐grown cells of culture BF were compared by SDS‐PAGE. A specific benzene‐expressed protein band of 60 kDa, which could not be observed during growth on phenol or benzoate, was subjected to N‐terminal sequence a...