肉食品中亚硝酸盐含量的测定

Determination of Sodium nitrite Content in Meat Products

[目的]亚硝酸钠是肉制品中常用的添加剂,也是一种毒性较强的化学物质。通过分析香肠中的亚硝酸盐的含量,建立亚硝酸钠快速检测手段。[方法]采用分光光度法确定最佳吸收波长,根据最佳吸收波长,检测不同食用方法的香肠中亚硝酸钠的含量。[结果]亚硝酸钠的最佳吸收波长为538 nm,未处理的火腿肠中亚硝酸盐的含量最高,为8.07 mg/kg,炒制过的火腿肠中含量最低,为5.27mg/kg。[结论]炒制加工后的肉制品比未处理过的肉制品中亚硝酸盐的含量低,食用更安全。该研究建立了一套简便、实用的亚硝酸钠含量的检测方法,为肉制品中亚硝酸钠含量的快速、高效检测提供了方法参考和理论依据。

[Objective]Sodium nitrite is commonly used in meat additives,and it is also a kind of acutely poisonous chemistry substance.A rapid detection method of sodium nitrite should be established in the analysis of sodium nitrite in the sausages.[Method]We obtained the sodium nitrite＇ s maximum absorption wavelength in the help of spectrophotometer.By using the maximum absorption wavelength,we also obtained the content of sodium nitrite in different edible sausages.[Result]The results showed that the maximum absorption wavelength of sodium nitrite was 538 nm.The content of sodium nitrite in untreated sausages was the highest in the most all of sausages and it was 8.07 mg/kg. But the content of sodium nitrite in fried sausages was the lowest in the most all of sausages and it was 5.27 mg/kg.[Conclusion]It would be more security to eat the fried sausages than to eat the untreated sausages.Also we built a simple and convenient detection method of sodium nitrite contents,it may provided the theoretical basis for the detection of sodium nitrite contents in meat products.