Abstract
IN work concerning the decomposition of antibiotics in soil and micro-organisms capable of this process, a chloramphenicol solution (250 µgm. chloramphenicol/gm. soil) was percolated through 25-gm. sieved fresh garden soil, PH 7.5, in an apparatus similar to that described by Lees and Quastel1. The chloramphenicol was applied in three doses; the first dissolved in 50 ml. sterile distilled water and the others in 5 ml. added to the percolate in the reservoir. The antibiotic was bioassayed daily against Bacillus subtilis. The first dose disappeared after 11 days and the second and third after 3 days.
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References
Lees, H., and Quastel, J. H., Biochem. J., 40, 803 (1946).
Pridham, T. G., Hesseltine, C. W., and Benedict, R. G., App. Microbiol., 6, 52 (1958).
Waksman, S. A., Bact. Rev., 21, 1 (1957).
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ABD-EL-MALEK, Y., MONIB, M. & HAZEM, A. Chloramphenicol, a Simultaneous Carbon and Nitrogen Source for a Streptomyes sp. from Egyptian Soil. Nature 189, 775–776 (1961). https://doi.org/10.1038/189775a0
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DOI: https://doi.org/10.1038/189775a0
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