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Dégradation d'acides aminés à l'interface eau‐sédiment réconstitué d'une lagune méditerranéenne (Golfe du Lion)
Author(s) -
Daumas R.,
Gadel F.,
Cahet G.,
Dinet A.
Publication year - 1984
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19840690207
Subject(s) - amino acid , lysine , arginine , chemistry , mineralization (soil science) , chromatography , environmental chemistry , biochemistry , stereochemistry , organic chemistry , nitrogen
Degradation of Amino Acids at a Simulated Water‐sediment Interface of a Mediterranean Lagoon Environment, Golfe du Lion The degradation of two 14 C and 3 H labelled amino acids at the simulated water‐sediment interface of a Mediterranean lagoon was studied. The four day experiments included the respiratory activity measurement and the study of incorporation processes of the radioactivity in specific organic fractions of the 14 C arginine. After active mineralization occurred during the first day, the radioactivity in the acid‐soluble fraction decreased and polycondensed products were progressively incorporated. The radioactivity of the 3 H lysine was included mainly in the acid soluble fraction. The nature of the substrate, and the reducing conditions in the environment affect the radioactivity distribution in the organic fractions. The identification of amino acids in the acid‐soluble and base soluble fractions shows that the labelled arginine and lysine and other amino acids in the acid soluble and base soluble fractions shows that the labelled arginine and lysine released from the initial compounds are important quantitatively.