夏季食品中酸价、过氧化值含量的检测与调查分析

Determination and diagnosis of acid value,peroxide value content in food in summer

目的:测定夏季食品中酸价、过氧化值含量,以了解其酸价、过氧化值两项指标的超标情况。方法:从杭州市超市、农贸市场、小食品店及用户家庭中采集47件糕点面包类、7件饼干类、13件油炸小食品类、6件方便面类、7件膨化食品类、5件腌腊肉类、10件烘炒类、2件裹衣花生类、30件食用植物油类共127件样品,采用国家标准方法[1,2]对样品中的酸价、过氧化值含量进行测定和调查分析。结果:127件样品的超标率为13.4%,其中酸价的超标率为3.1%,过氧化值的超标率为10.2%。47件糕点、面包类的超标率为6.4%,7件饼干的超标率为14.3%,5件腌腊肉类的超标率为60%,2件裹衣花生的超标率为50%,10件烘炒类的超标率为40%,30件食用植物油类的超标率为13.3%。结论:我国居民应改变长久以来形成的饮食习惯,尽量少吃或不吃腌腊肉类食品;谨慎购买经过夏季或黄梅季度的烘炒类产品,绝对不能食用出现哈喇味的产品;建议家庭夏季用油不要购买大包装,应尽量购买小包装,缩短使用期限。

Objective： To investigate the unqualified situation of acid value and peroxide value in summer food. Methods： A total of 127 sample （47 Cakes and pastries bread,7 Biscuit,13 Fries in oil food, 6 Instant noodle,7 Puffs food,5 Salt cured meat, 10 Dries fries food,2 Binds clothes peanut and 30 Edible vegetable oil） were collected from different department and family in Hangzhou. The acid value, peroxide value were determined by national standard method. Results：The unqualified rate of 127 sampies was 13.4%, among them the unqualified rate of acid value was 3.1%, the unqualified rate of peroxide value was 10. 2%. And the unqualified rate of cakes and pastries bread was 6. 4%, biscuit was 14. 3%, salt cured meat was 60%, binds clothes peanut was 50%, dries fries food was 40%, edible vegetable oils was 13.3%. Conclusion： People should eats little or does not eat the salt cured meat. They should purchase the dry food after the summer or the ripe plum quarter with caution.