열처리 가공중의 발암성이 있는 nitrosamine의 전구물질이 되는 dimethylamine(DMA)의 함량 변화를 실험하였다. 신선한 어육중의 DMA함량은 명태가 피등어꼴두기, 조기. 고등어 보다 월등하게 많았다. 열처리 가공중의 DMA량의 변화를 보면 생시료에 비하여 명태는 열풍건조중 1.8배, 천일건조중 16,6배 증가하였다. 고등어는 배건중에 6.3배, 통조림 가공중에는 9.5배 DMA함량이 증가하였다. 한편 명태, 피등어꼴뚜기, 조기, 고등어 육에서는 dimethylamine, diethylamine은 검출되지 않았다.
Secondary amines are known as one of the precursors of nitrosamines which are potent carcinogenic compounds of man and animals. Nitrosamines are formed when both secondary amines and nitrite are present. The nitrites are occurred naturally in vegetables, fruits and many others, and frequently used in fish product as a color fixative or a preservative. In this paper, to know the formation of nitrosamines in fish meat, the changes of dimethylamine (DMA) content during the heat treatment such as drying, roasting and fish cake processing are discussed. The results showed that generally DMA increased considerably during heat processing. During drying, DMA in cuttle fish increased 16 times higher, while in Alaska pollack doubled than the fresh. In the roasted mackerel, the DMA content appeared 6 times higher than the fresh, while 9 times higher in canning. In fish cake from yellow corvenia, DMA increased 4 times higher than the fresh. On the contrary diethylamine and diphenylamine were not found in this experiment.
