乌鲁木齐市区高校及其附近早餐店凉菜中亚硝酸盐含量的检测与分析

目的]了解并掌握乌鲁木齐市区内高校及其附近早餐店凉菜中亚硝酸盐污染情况。方法]2016年6~9月,随机采集乌鲁木齐市区高校食堂及附近早餐店销售的各种腌制凉菜538份,用食品安全国家标准食品中亚硝酸盐与硝酸盐的测定(GB 5009.33—2010)中的第二法——分光光度法测定亚硝酸盐含量。结果]所检测的凉菜食品合格率为90.00%(484/538)。其中,蕨根粉合格率最高,为100%;胡萝卜丝和咸萝卜干合格率最低,分别为81.30%和81.60%。采集学校食堂的样品合格率为94.20%(260/276),而采自学校附近早餐店、牛肉面店的样品合格率为85.50%(224/262)。结论]乌鲁木齐市餐饮行业早餐店销售的凉菜中仍然存在亚硝酸盐含量超标状况,而学校食堂销售的腌制凉菜质量高于附近早餐店和牛肉面店销售的凉菜质量,建议广大消费者尽量选择卫生质量好的早餐店就餐。

Detection and Analysis of Nitrite Content in Cold Dishes from University and Nearby Breakfast Shops in Urumqi

Objective] To understand the pollution situation of nitrite in cold dishes from university and nearby breakfast shops in Urumqi City.Method] A total of 538 pickled vegetables were randomly collected from university dining room and nearby breakfast shops in Urumqi during Jun.-Sep.2016,nitrite content was detected by spectrophotometry from food safety national standard GB 5009.33-2010.Result] The qualified rate of detected cold dishes was 90.00%(484/538),among which,fern rhizome powder was highest(100%),carrot silk(81.30%) and salted dried turnip(81.60%) were lowest.The qualified rate of products from school dining room was 94.20%(260/276),while the qualified rate of products from nearby breakfast shops,beef noodle shops was 85.50%(224/262).Conclusion] The nitrite content exceeding the standard still exists in cold dishes from breakfast shops in Urumqi City,quality of pickled vegetables from school canteen is higher than that of from nearby breakfast shops,beef noodle shops.It is recommended that the majority of consumers as far as possible to choose a good quality breakfast restaurant.