Maximum degradation (92%) was observed with fluorene where two metabolites, cis muconic acid (RT =1.265 min) and catechol (RT = 2.239 min) were also detected during HPLC analysis by comparison with authentic standards. Growth was significantly correlated with degradation (anthracene; r = 0.970, fluorene; r =0.971, phenanthrene; r = 0.864, pyrene; r= 0.957). Generally,bacteria and non lignolytic fungi metabolize PAHs via initial PAH ring oxidation involving dioxygenases to
form cis-dihydrodiols, which are transformed to catechol compounds by dehydrogenases. Several other mono and dioxygenases also oxidised substituted catechol and noncatechol compounds. Finally, all ortho- or meta-cleaved metabolites are further oxidized to simpler compounds(Haritash and Kaushik).
Maximum degradation (92%) was observed with fluorene where two metabolites, cis muconic acid (RT =1.265 min) and catechol (RT = 2.239 min) were also detected during HPLC analysis by comparison with authentic standards. Growth was significantly correlated with degradation (anthracene; r = 0.970, fluorene; r =0.971, phenanthrene; r = 0.864, pyrene; r= 0.957). Generally,bacteria and non lignolytic fungi metabolize PAHs via initial PAH ring oxidation involving dioxygenases toform cis-dihydrodiols, which are transformed to catechol compounds by dehydrogenases. Several other mono and dioxygenases also oxidised substituted catechol and noncatechol compounds. Finally, all ortho- or meta-cleaved metabolites are further oxidized to simpler compounds(Haritash and Kaushik).
การแปล กรุณารอสักครู่..
