Summary
A total of 1229 cultures, including 230 actinomycetes, 508 other bacteria, 12 fungi and 479 yeasts were screened for their ability to oxidize the isopropyl side chain of 2-phenyl propane (cumene). Four strains of actinomycetes and six strains of bacteria but no yeasts were found positive in converting 2-phenyl propane to its oxygenated products. Eight strains oxidized cumene through the alkyl side chain producing 2-phenyl-1-propanol. TwoBacillus strains oxidized cumene to an oxygenated product.Pseudomonas oleovorans NRRL B-3429 exhibited the highest alkyl side chain oxidation activity. The optimum reaction conditions for strain B-3429 are: 25 °C, pH 6.5 and 48 h of reaction. Octane-grown cells of strain B-3429 produced higher product yields (about 7.2-fold) than the glucose-grown cells. Prolonged incubation resulted in an increase in 2-phenyl-1-propionic acid production at the expense of 2-phenyl-1-propanol. The yield of 2-phenyl-1-propanol plus 2-phenyl-1-propionic acid was 5.1%. Reaction in the presence of methanol favored the accumulation of 2-phenyl-1-propionic acid and also increased the total yield. (The yield of 2-phenyl-1-propanol plus 2-phenyl-1-propionic acid was 14.9%.) Structures of the reaction products were confirmed by GC/MS and GC/IR analyses. Products contained 92% R(−) isomer.
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Hou, C.T., Seymour, T.A. & Bagby, M.O. Microbial oxidation of cumene. Journal of Industrial Microbiology 13, 97–102 (1994). https://doi.org/10.1007/BF01584105
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DOI: https://doi.org/10.1007/BF01584105