Polyacrylamide Gel Disc Electrophoresis of Alkaline Proteinases from Aspergillus Species

Ciliatine (2-aminoethylphosphonic acid) (76 mg) was isolated from 72 g of lipids of the oyster with a combination of ion exchange chromatographic techniques and was identified from the results of elementary analysis, infrared spectrum, and chromatographic behaviors. The phosphonic acid was also detected in hydrolysates of a chloroform-methanol insoluble fraction of the oyster. It has been demonstrated that the oyster contains high concentration of ciliatine.