分光光度法测定市售肉罐头食品中亚硝酸盐含量

Spectrophotometric Determination of Commercially Canned Meat Content of Nitrite in Food

肉罐头主要是以猪肉、牛肉、鸡肉为原料，加入一定量的淀粉、食盐、香辛料、亚硝酸盐加工制成的。亚硝酸盐是一种剧毒物质，具有急性中毒反应，成年人摄入0.2~0.5 g就能引起中毒现象，摄入3 g可引起死亡。另外，根据研究表明，当人体长期小剂量地摄入含有亚硝酸盐的食品后，会对机体具有一定的致癌作用。所以，测定肉罐头中亚硝酸盐的含量具有非常重要的意义。

Canned meat is mainly pork, beef, chicken as raw material and adding a certain amount of starch, salt, spice and nitrite. Nitrite is a highly toxic substance, with acute toxic reactions. Adult exposure to 0.2~0.5 g can cause poisoning phenomenon, and intake of 3 g can cause death. In addition, according to the study, when the intake of food containing nitrite human long-term small dose, nitrite carcinogenic effects on the body. Therefore, it has very important significance for the determination of nitrite content in the canned meat.