鱿鱼、海参、鲜奶中非法添加工业火碱的辅助检测

目的检测制作鱿鱼、海参、鲜奶等食品时是否违法使用工业火碱。方法利用差示扫描量热法测定鱿鱼、海参中非法添加工业火碱可能引起的蛋白质变性,用原子吸收光谱法测定鱿鱼、海参和鲜奶中非法添加工业火碱可能引起的重金属元素含量的变化。结果添加工业火碱会引起该类食品蛋白质变性和Pb、As、Hg等重金属含量的升高。结论差示扫描量热法和原子吸收光谱法均可辅助用于检测该类食品是否添加工业火碱。

Determination of illegal adding of industrial sodium hydroxide in sleeve-fish, sea cucumber and raw milk

Objective To detect the illegal using of industrial sodium hydroxide during the food production, such as squid, sea cucumber, fresh milk. Method The protein denaturation in squid and sea cucumber caused by the illegally added industrial sodium hydroxide was determined by differential scanning calorimetry (DSC). The change of heavy metal element content in squid, sea cucumber and fresh milk was measured by atomic absorption spectroscopy (AAS). Results Adding industrial sodium hydroxide could cause protein denaturation as well as the increasing of heavy metal content including Pb, As and Hg in food. Conclusion Both DSC and AAS can be employed as auxiliary methods in monitoring the industrial sodium hydroxide using in food industry.