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THE EFFECT OF pH ON THE INCORPORATION OF AMINO ACIDS INTO HUMIC ACID EXTRACTED FROM SOIL
Author(s) -
ADAMS W. A.,
PERRY D. R.
Publication year - 1973
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1973.tb00738.x
Subject(s) - chemistry , humic acid , amino acid , dipeptide , stereochemistry , organic chemistry , biochemistry , fertilizer
Summary The effect of pH on the incorporation of six 14 C‐labelled amino acids and a dipeptide into humic acid extracted from a podzolic soil was examined. Maximum incorporation was found to occur at a pH which coincided with the apparent dissociation constants of their α‐amino groups. Incorporation took place, into forms which were both acid‐hydrolysable and non‐hydrolysable, the latter accounting for between ten and twenty per cent of the total.