TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A method of geochronology based on the chemical racemization (or epimerization) of amino acids.  1, record 1, English, - amino%2Dacid%20racemization%20age%20method

Record number: 1, Textual support number: 1 OBS

Amino acids of living organisms consist virtually entirely of the L-enantiomer (or diastereomer). After the death the L-enantiomer (or diastereomer) for each amino acid is slowly racemized and eventually forms an equilibrium mixture consisting of equal amounts of the D- and L-enantiomers (or diastereomers). The increase in D/L ratio can be used to obtain a measure of the time that has elapsed since the organism died.  1, record 1, English, - amino%2Dacid%20racemization%20age%20method

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Méthode de datation basée sur la racémisation des acides aminés, c'est-à-dire la conversion, en fonction du temps, des stéréo-isomères L en stéréo-isomères D.  3, record 1, French, - datation%20par%20les%20acides%20amin%C3%A9s

Record number: 1, Textual support number: 1 OBS

La datation de coquillages, bois et autres matériaux fossiles, en utilisant la racémisation d'acides aminés, c'est-à-dire la conversion, par hydrolyse et avec le temps des chaînes de peptides, de stéréo-isomères L en stéréo-isomères D, est de plus en plus utilisée dans les études sur le Quaternaire.  4, record 1, French, - datation%20par%20les%20acides%20amin%C3%A9s

Record 1,  Textual support,  Spanish