冷却猪肉表面菌落总数的快速无损检测方法研究  

A Rapid Nondestructive Measurement Method for Assessing the Total Plate Count on Chilled Pork Surface

作　　者：陶斐斐[1] 王伟[1] 李永玉[1] 彭彦昆[1] 吴建虎[1] 单佳佳[1] 张雷蕾[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《光谱学与光谱分析》2010年第12期3405-3409,共5页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(30771244);北京市自然科学基金项目(6082016);国家(863)高技术研究发展计划项目(2008AA10Z210);中国农业大学基本科研业务费研究生科研创新专项资助

摘　　要：研究了4℃冷链条件下,冷却猪肉在1-14 d贮藏期间,表面菌落总数与400-1 100 nm光谱范围内相应高光谱图像的关系,提出了一种基于高光谱技术的冷却猪肉表面菌落总数的快速无损检测方法。并采用多元线性回归和偏最小二乘回归两种统计分析方法分别建立预测模型,均得到较好的预测结果,其预测集相关系数RV分别为0.886和0.863。实验结果表明,利用高光谱技术可以较好地定量分析冷却猪肉表面的菌落总数,应用该技术对冷却猪肉品质安全进行快速无损评价是可行的。The present paper proposed a method based on the hyperspectral technology for rapidly,nondestructively quantify the total plate count on chilled pork surface.In the research,50 chilled pork samples stored at 4 ℃ for 1-14 days were used to study the relationship between the total plate count on chilled pork surface and their hyperspectral images collected in 400-1 100 nm.Two models were established using MLR and PLSR methods,and the prediction showed that they can both give satisfactory results with Rv=0.886 and 0.863 respectively.The overall research demonstrates that the hyperspectral technology can well quantify the total plate count on chilled pork surface,and so indicates that it is a valid tool to assess the quality and safety properties of chilled pork in the future.

关 键 词：高光谱 冷却猪肉 菌落总数 多元线性回归 偏最小二乘回归 

分 类 号：S123[农业科学—农业基础科学]