Under the condition of pH 1 2 and presence of sodium nitrite, NMU was synthesized in the stomachs of experimental pigs fed with fish sauce via gastric fistula.

• 在一定的胃内酸性条件及亚硝酸盐存在的情况下，接受鱼露灌胃的实验猪胃内有NMU 的合成。