Studies on Greening of Canned Shellfishes

Part II. Isolation of green pigments of canned oysters and their physico-chemical properties

Abstract

In the previous paper it was reported that the green pigments of canned oysters are separated into three components. Further investigation showed that they can be further separated by organic solvents into five components containing copper.
Results from the absorption spectra, thin layer chromatographies, solubility examination, infrared spectra and micro analyses indicated that they are not chlorophyll a or copper chlorophyllin a, but they are similar to copper phaeophytin a or copper phaeophorbide a.