A Study on the Characteristics of Humic Materials Extracted from Decomposing Plant Residues -IV. Amino Acids in the Hydrolysates of Humic Acids Extracted from Straw of Wheat and Rye

식물성(植物性) 유기물질(有機物質)의 부숙과정중(腐熟過程中) 부후물질특성(腐朽物質特性)에 관(關)한 연구(硏究) -IV. 밀짚과 호밀짚의 부식산(腐植酸)의 산가수분해용액중(酸加水分解溶液中) Amino 산(酸)의 함량(含量)

  • Published : 1988.12.30

Abstract

Humic acids were extracted from straw of wheat and rye at three different stages of decomposition. Contents and distribution of amino acids in the hydrolysates of humic acids were examined and the results obtained can be summarized as the following: 1. Contents and distribution of amino acids in the hydrolysates of humic acids differ from plant to plant and from one stage of decomposition to another. 2. Neutral amino acids as a group take the largest portion of the total amino acids in humic acid hydrolysates followed by the acidic and the basic. 3. The total amount of amino acids in decomposed wheat straw at the 90 days of humification was greater than that in the case of rye straw. 4. Contents of amino acids other than arginine, histidine and tyrosine were increased in the case of wheat straw, while only the contents of lysine, phenylalanine, tyrosine and methionine were observed to increase in the case of rye straw. 5. Exceptionally high contents of phenylalanine and tyrosine were measured in the hydrolysate from rye straw taken at the end of experimental period. 6. No amount of arginine was detected in any hydrolysate of humic acids from decomposed plant residues.

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