Soil amino acids on association converted to peptide-polypeptide and protein part of humic molecules during humification process

Dr Sanjib Kar1

1University Of Calcutta, Kolkata, India

The aim of this study were  to find out the fate of amino acid on  humification processes  in soil. For this study humic acid were extracted from  jalpaiguri  forest soil and treated with eleven different amino acids with or without clay. It was observed that cation exchange capacity and    electric potential decreases  with time whereas  N content, molecular weight and % aromiticity of humic molecule increase with time. Infrared and C13 nuclear magnetic resonance spectra established that various groups of amino acids react with each other converted to peptide ,poly-peptide   and finally  protein part  in humic  molecule. Carbon % , N % and protein content of humic molecules increase from 55.4  –  57.1, 3.5 – 4 and 13.575  – 24.725   mgg-1respectively within one year reaction . From this study it is clear that amino acids in soil on association converted to peptide –polypeptide and protein and that became a part of humic molecules during humification process.

SOIL ORGANIC MATTER

7th International Symposium
Soil Organic Matter

6 – 11 October 2019

Hilton Adelaide

Adelaide, South Australia

Australia

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