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一九七八年在阿根廷举行的第十一届国际抗癌大会再次强调了食品中的亚硝胺是重要的致癌因素之一.亚硝胺是一类含氮的化合物.它的结构式是(?)>N=0[式中的R_1是烷基,R_2可以是烷基,也可以是酯类(—COOR)、酰胺类(—CONH_2)或芳香烃(C_6H_6—)等].当R_1和R_2为烷基、芳基和芳烷基时,化学性质是稳定的.但是,由于紫外线下的光合作用或是在哺乳动物体内受酶的作用,上述的烷基、芳基和芳烷基就会转变成具有致癌作用的活性代谢产
The Eleventh International Conference on Anticancer Cancer held in Argentina in 1978 emphasized once again that nitrosamines in foods are one of the most important carcinogenic agents. Nitrosamines are a class of nitrogen-containing compounds whose structural formula is ( ?)> N = 0 [wherein R 1 is an alkyl group, R 2 may be an alkyl group, or may be an ester group (-COOR), an amide group (-CONH_2) or an aromatic hydrocarbon (C_6H_6-) When R 2 is an alkyl, aryl or aralkyl group, the chemical properties are stable, however, the above alkyl, aryl and aralkyl groups are affected by the action of ultraviolet light or by enzymes in mammals Will be transformed into an active metabolite of carcinogenic effects