Amino acids in lacustrine ostracodes, part III: Effects of pH and taxonomy on racemization and leaching

► pH and taxonomy influence rates of amino acid racemization in ostracode valves. ► Elevated pH increases amino acid racemization rates. ► Racemization rates vary across taxonomic boundaries. ► Primary and secondary releases of amino acids from ostracode valve proteins. ► Ostracode valve protein composition may be affected by environmental variables.