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Sulphur and carbon isotope fractionation by Salmonella heidelberg during anaerobic SO 3 = reduction in Trypticase soy broth medium

1968; Canadian Science Publishing; Volume: 14; Issue: 4 Linguagem: Inglês

10.1139/m68-066

1480-3275

H. R. Krouse, Akira Sasaki,

Agriculture, Soil, Plant Science

In a long-term experiment, Salmonella heidelberg was found capable of significantly altering the 13 C/ 12 C, and 34 S/ 32 S abundance ratios during anaerobic SO 3 = reduction in Trypticase soy broth medium. During the experiment, the 13 C/ 12 C ratio of the product CO 2 fluctuated by nearly 5%. The 32 SO 3 = species was reduced faster than 34 SO 3 = by a factor which varied from 1.026 near the beginning of the experiment to 1.042 near the end of it. This factor is significantly higher than that realized in the equivalent inorganic reduction.