FIG. 2.

Degradation of five nonylphenol isomers (4-NP₉₃ [○], 4-NP₁₁₂ [□], 4-NP₉ [•], 4-NP₂ [▪], and 4-NP₁ [⊠]) by S. xenophaga Bayram in minimal medium. The isomers were added as a mixture (A) and as individual isomers (B) at a concentration of 1 mg/ml for each isomer. Recoveries of nonylphenol isomers from uninoculated controls were between 100 and 101% for experiment A and between 91 and 104% for experiment B.