ABSTRACT This study was undertaken to determine
the occurrence of uronic acid in chicken eggshell membranes
and to compare chemical compositions among
the inner and outer eggshell membranes and the organic
matter of eggshell. We report here for the first time the
occurrence of uronic acid in chicken eggshell membranes.
Uronic acid concentrations were similar (P > 0.05) between
the inner shell membrane and outer shell membrane
but approximately fivefold higher (P < 0.05) in the
organic matter of eggshell. Sialic acid concentrations were