Chemical evidence of rare porphyrins in purple shells of Crassostrea gigas oyster

摘要

Schematization of shell samples collection, preparation and structural characterization by SEM. ( ) Schematic figure of decontaminated WOS and POS collected from adult living oysters (Thau lagoon, France). ( ) Characteristic SEM images of decontaminated WOS (cross-section and top view, scale bar = 30 and 20 μm, respectively). ( ) Characteristic SEM images of decontaminated POS (cross-section and top view, scale bar = 50 and 12 μm, respectively). ( ) Representative photograph of a decontaminated dorsal valve with a dark adductor muscle scar (AMS), obtained from adult wasted shells. ( ) Characteristic SEM images of decontaminated dark AMS (top views, scale bar = 1 and 6 μm).