屠宰过程中滩羊胴(屠)体表面微生物污染水平的变化  

Microbial Contamination of Tan Sheep Carcass(Body) during Processing

作　　者：邹昊[1,2] 臧明伍 乔晓玲[1,2] 白京 李贺楠[1] 史宇璇 吴嘉佳 徐晨晨[1,2] ZOU Hao;ZANG Ming-wu;QIAO Xiao-ling;BAI Jing;LI He-nan;SHI Yu-xuan;WU Jia-jia;XU Chen-chen(China Meat Research Center,Beijing 100068,China;Beijing Key Laboratory of Meat Processing Technology,Beijing 100068,China)

机构地区：[1]中国肉类食品综合研究中心,北京100068 [2]肉类加工技术北京市重点实验室,北京100068

出　　处：《食品研究与开发》2023年第2期151-155,共5页Food Research and Development

基　　金：“十四五”国家重点研发计划项目“高端生鲜肉智能化加工工艺创新及产业化示范”(2021YFD2100800)。

摘　　要：为了促进盐池滩羊产业的进一步发展,降低宰后滩羊胴体表面的微生物污染水平,延长生鲜滩羊肉产品的货架期,对当地某滩羊屠宰加工企业日常生产过程中6个环节(剥皮扯皮、取白脏红脏、修整称重、去尾燎毛、冲洗和冷却)共300个滩羊胴(屠)体的5个部位(后腿、背部、胸部、前腿和颈部)表面的菌落总数(aerobic plate count,APC)进行采样和检测,以胴(屠)体平均APC作为指示指标进行统计和分析,探究滩羊胴(屠)体表面微生物污染水平在屠宰加工过程中的变化规律。结果显示,剥皮扯皮后,屠体平均APC为(2.27±0.43)lg(CFU/cm^(2));取白脏红脏、修整称重和冷却后,胴(屠)体平均APC均显著上升(P<0.05),分别达到(2.52±0.45)、(3.01±0.44)、(2.28±0.41) lg(CFU/cm^(2));去尾燎毛和冲洗后,胴体平均APC均显著下降(P<0.05),分别达到(2.28±0.37)、(2.28±0.41)lg(CFU/cm^(2))。Examining the microbial contamination on Tan sheep carcass during processing can help to reduce the contamination level,extend the shelf life of fresh Tan sheep meat products,and provide a basis for the development of Tan sheep industry in Yanchi county. The microbial contamination levels on Tan sheep carcass(body) were investigated during the daily operation of a local Tan sheep processing plant. The samples were collected at 6 processing links(skinning,evisceration,trimming and weighing,tail removal and singeing,washing,and chilling),covering 300 carcasses(bodies). For each carcass(body),the microorganisms on the surfaces of 5 sites(hind leg,back,breast,front leg,and neck) were examined The mean aerobic plate count(APC)was taken as the indicator for reveal ing the changes in microbial contamination level on Tan sheep carcass(body)during processing. The results showed that the mean APC was(2.27±0.43)lg(CFU/cm^(2))after skinning.After evisceration,trimming and weighing,and chilling,the mean APC increased significantly(P<0.05)to(2.52±0.45),(3.01±0.44),and(2.28±0.41) lg(CFU/cm^(2)),respectively. The mean APC decreased significantly(P<0.05)to(2.28±0.37)lg(CFU/cm^(2))after tail removal and singeing and(2.28±0.41)lg(CFU/cm^(2))after washing.

关 键 词：屠宰 羊胴(屠)体 微生物污染 水平 菌落总数 

分 类 号：TS251.41[轻工技术与工程—农产品加工及贮藏工程]