Studies on the Characteristic Odour of Squid-III

Rain spoilt dried-squid is a product of low quality produced when squid meat is exposed to rain during drying process, and has an offensive odour. The unpleasant odorous substances were extracted from rain spoilt dried-squid with 70% ethanol. They were separated into acidic and basic parts. From the acidic part, a substance with strongly offensive odour characteristic to rain spoilt dried-squid, a kind of unsaturated fatty acid, was obtained. Formic, acetic, and i-butyric acid were also found by paper chromatography. From the basic part, ammonia, trimethylamine, piperidine, indole, and two unknown amines were recognized by paper chromatography.