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HPLC elution profiles of neutral (A) and acidic (B) extracts from cultures of strain AP1 in liquid mineral medium containing pyrene (1 g/liter). The UV-visible spectra of identified metabolites are displayed as insets. These metabolites were identified as follows: II, phenanthrene 4-carboxylic acid; III, 4,5-dihydroxy-4,5-dihydropyrene; IV, 6,6′-dihydroxy-2,2′-biphenyl dicarboxylic acid; VI, phenanthrene 4,5-dicarboxylic acid; and VIII, phthalic acid. mAU, milliabsorbance unit.
