陕西关中畜禽肉及凉拌菜中沙门氏菌污染分析  

Study on the Contamination Status of Salmonella in Retail Meat and Read to Eat Salad in the Middle Districts of Shaanxi Province

作　　者：石颖[1] 杨保伟[1] 师俊玲[1] 只帅[1] 席美丽[1] 申进玲[1] 孟江洪[1] 

机构地区：[1]西北农林科技大学食品科学与工程学院,陕西杨凌712100

出　　处：《西北农业学报》2011年第7期22-27,共6页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：长江学者讲座教授奖励计划项目(Z111020001);"948"项目(K332021007)

摘　　要：为了解陕西省关中地区食品中沙门氏菌的污染状况及分布,初步确定污染沙门氏菌的高危食品种类,为沙门氏菌检测、监测和食品安全控制提供理论依据。本研究按照GB/T 4789.1-2003规定的方法采集陕西省西安、杨凌和宝鸡等地超市和农贸市场的零售肉样品443份,凉拌菜样品209份;使用选择性培养基分离沙门氏菌,采用PCR技术对沙门氏菌进行鉴定。结果发现5大类食品中,鸡肉被沙门氏菌污染的状况最为严重(69.9%),其他食品污染率由高到低依次为羊肉(55.3%)、牛肉(30.1%)、猪肉(19.4%)和凉拌菜(9.6%);肉类食品的污染状况(45.2%)远高于凉拌菜(9.6%);从超市采集的零售肉样品沙门氏菌污染率(46.8%)低于从农贸市场采集的零售肉样品(54.6%);西安地区零售肉沙门氏菌污染率最高,其次分别为杨凌和宝鸡地区;杨凌地区即食凉拌菜沙门氏菌污染率最高(6.7%),其次分别为宝鸡(2.9%)和西安(0%)。从结果可得出,陕西关中地区的零售肉和即食凉拌菜已在不同程度上受到沙门氏菌污染。The contamination status and prevalence of Salmonella in foods in the middle districts of Shaanxi province were studied in order to determine the types of high risk food which is contaminated with Salmonella initially and provide theoretical data for Salmonella detection,supervision and food safety management.Four hundred and forty three retail meat samples including chicken,lamb,beef and pork,and 209 instant cold dishes samples were collected from supermarkets and freemarkets in Xi＇an,Baoji and Yangling district according to GB/T 4789.1-2003.Salmonella was isolated using selective mediums and further identified using PCR method.In five kinds of retail meats,69.9% chickens were positive to Salmonella and were the most seriously contaminated food,followed by the retail meat of lamb,beef and pork for 55.3%,30.1% and 19.4%,respectively,9.6% of instant cold dishes were positive to Salmonella.Retail meats collected in supermarkets were less contaminated（{46.8%}） than those from free markets（54.6%）;Retail meat in Xi＇an was contaminated most seriously,followed by Baoji and Yangling;The instant cold dishes which were having the highest detection rate of salmonellae were from Yangling（6.7%）,followed by Baoji（2.9%） and Xi＇an（0%）.Retail meats and inctant cold dishes in the middle district of Shaanxi province have been contaminated by Salmonella seriously,surveillance and more attentions should be paid to ensure food safety.

关 键 词：陕西 畜禽肉及凉拌菜 沙门氏菌 污染状况 

分 类 号：R155.5[医药卫生—营养与食品卫生学]