Humic acid reactions with amino acids |
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| Authors: | M Schnitzer FJ Sowden KC Ivarson |
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| Institution: | Soil Research Institute, Agriculture Canada, Ottawa, Ontario KIA OC6 Canada |
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| Abstract: | Reactions between five humic acids extracted from soils with widely differing pedological histories and 17 amino acids commonly occurring in proteins were investigated in aqueous solutions at pH 3.0 and 6.5. The reactions were affected by: (a) nature of the humic acid: (b) pH of the system: and (c) length of contact. The principal reaction appeared to be the microbiological oxidative degradation of the amino acids leading to the formation of substantial amounts of ammonium. While there was no evidence that the humic acids per se interacted with the amino acids, they did not appear to interfere with the microbiological degradation of the amino acids. |
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