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- W2090591804 abstract "Abstract Decaffeination is an important process for the removal of caffeine from wastes generated by coffee and tea industries. Microbial degradation of caffeine is more useful than conventional chemical treatment because of its low cost and because it does not involve the use of toxic solvents. However, biodegradation of caffeine remains a problem because of the difficulty of finding a strain that can resist high concentration of caffeine in addition to be able to degrade caffeine at higher rates. In this study, we used the induced cells of Pseudomonas sp. for the degradation of caffeine. The induced cells (8 mg/ml) showed complete degradation of a initial concentration of caffeine of 1.2 g/l in 6 hours. The optimum pH was 7.0, the agitation rate was 180 rpm and the optimum temperature for degradation was 35 °C. Under these conditions and in the presence of magnesium, complete degradation of 1.2 g/l of caffeine was accomplished in 4 hours. Additional trials determined that induced cells completely degraded an initial concentration of caffeine of 10 g/l in 26 hours. This is the first report on a strain that can degrade high concentrations of caffeine (e.g., 10 g/l) at the maximum rate of 0.385 g/l per hour. These results suggest that the strain can be used to successfully in developing a biological process for the degradation of caffeine." @default.
- W2090591804 created "2016-06-24" @default.
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- W2090591804 date "2006-11-11" @default.
- W2090591804 modified "2023-09-27" @default.
- W2090591804 title "How induced cells of Pseudomonas sp. increase the degradation of caffeine" @default.
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- W2090591804 doi "https://doi.org/10.2478/s11535-006-0032-4" @default.
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