Amino acids→Imino acids→Keto acids→NH3 1
NHþ þ 2O2 ⇒NO− þ 2Hþ þ H2 O ð
4 3
and may be operative in the oxidized soil layer. On the
other hand, the reductive deamination (Rose, 1976)
presumably takes place in the reduced soil layer:
Amino acids→Saturated acids→NH3 ð2Þ
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