By Walter Reineke (auth.), B. Beek (eds.)
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Polycyclic fragrant Compounds (PAC) are a large classification of compounds whose vast distribution within the surroundings effects from incomplete combustion approaches of fossil fuels in strength generator, business plant and household heating, from automobile exhaust fuel and from tobacco smoke. Many PACs are biologically lively and particularly a number of the PACs with 3 or extra fused earrings are carcinogenic.
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Additional resources for Biodegradation and Persistance
Anaerobic a-oxidation. Phenylglyoxylate or 4-hydroxyphenylglyoxylate are the products formed by the nitrate-reducing Pseudomonas strains  and Thauera aromatica . The oxidative decarboxylation of phenylglyoxylate to benzoyl-CoA by phenylglyoxylate: NAD+ oxidoreductase (CoA benzoylating)  is not an unusual reaction, analogous to the oxidative decarboxylation of pyruvate. Mandelate can be oxidized via phenylglyoxylate to benzoyl-CoA [212, 213]. Phenylpropionate is easily boxidized to benzoate  and further degraded as such.
Chrysosporium in its lignin degradation mechanism in that it does not involve lignin peroxidase activity . Instead, its lignin degradation ability is assumed to be due to laccase activity [127, 128, 131, 170]. Laccase was found to be nonspecific as to its reducing substrate as well as able to oxidize a variety of substrates including polyphenols, methoxy-substituted phenols, diamines, and a range of other compounds. Bezalel et al. [171, 172] reported that Pleurotus ostreatus is able to mineralize various PAHs to 14CO such as phenanthrene, pyrene (no degradation in ), benzo[a]pyrene, 2 anthracene, and fluorene, but fails to mineralize fluoranthene.
A b-oxidation pathway that produces three acetyl moieties follows the ring cleavage. Acetyl-CoA may then further be oxidized to CO2 . 1 Channeling Reactions to Benzoyl-CoA Benzoyl-CoA is formed from a large variety of different compounds, such as phenol, 2-hydroxybenzoate, 4-hydroxybenzoate, p-cresol, phenylacetate, 4-hydroxyphenylacetate, mandelate, hydroxymandelate, toluene, 2-aminobenzoate, 4-aminobenzoate, aniline, and many others. The pathways are summarized in Fig. 27 indicating that some analogous reactions take place with these quite different compounds.