中国牛肉大理石花纹等级图谱的改进研究_汤晓艳.pdfVIP

中国农业科学 2006,39(10):2101-2106 Scientia Agricultura Sinica 中国牛肉大理石花纹等级图谱的改进研究 汤晓艳 1,2，徐幸莲 1，钱永忠 2，贾 渊 3，王 敏 2，周光宏 1 （1 南京农业大学农业部农畜产品加工与质量控制重点开放实验室，南京 210095；2 中国农业科学院农业质量标准与检测技术研究所， 北京 100081；3 西南科技大学计算机学院，绵阳 621010） 摘要：【目的】为了解决中国农业行业标准——《牛肉质量分级》应用时发现的大理石花纹等级标准图谱的大 理石花纹量化不均的问题。【方法】对牛肉眼肌截面照片中的大理石花纹进行图像处理，提取其中的特征参数，并 进行统计分析。【结果】建立了大理石花纹得分与大理石花纹总面积、大颗粒脂肪密度、中等颗粒脂肪密度和脂肪 分布均匀度的线性预测模型，在预测模型和有代表性的样本参数统计的基础上对不同大理石花纹等级的特征参数 进行了量化调整，将原有的 4 级调整为 7 级，构建了新的大理石花纹等级图谱。【结论】筛选的预测模型合理性较 好（R2=0.8415），新的大理石花纹总面积从1至7级依次为 14%、11%、8%、6%、4%、2%和 0.5%。 关键词：牛肉；大理石花纹标准图谱；改进 Improvement of Marbling Grading System for Chinese Beef TANG Xiao-yan1,2, XU Xing-lian1, QIAN Yong-zhong2, JIA Yuan3, WANG Min2, ZHOU Guang-hong1 ( 1Laboratory of Agricultural and Animal Products Processing and Quality Control, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095; 2Institute of Quality Standards Testing Technology for Agri-Products, Chinese Academy of Agricultural Science, Beijing 100081; 3College of Computer, Southwest University of Science and Technology, Mianyang 621010 ) Abstract: 【Objective】A study was carried out on a marbling grading system for Chinese beef, which has not been properly framed in the Beef Grading Standard issued by Ministry of Agriculture. 【Method】Parameters representing count and area densities of marbling were picked through computer-aided analysis of the marbling images. 【Result】Linear predicted models were set up to express the relationship between the marbling grade and the parameters, including the sum of the marbling area, large marbling flecks density, middle marbling flecks density, and marbling distribution. Based on the above results, a seven-grade s