食品科学 ›› 2020, Vol. 41 ›› Issue (18): 303-310.doi: 10.7506/spkx1002-6630-20190722-289

• 安全检测 • 上一篇    下一篇

综合肉样及环境矿物质元素信息的滩羊肉产地鉴别

王雪蓉,罗瑞明,李亚蕾,马梦斌   

  1. (宁夏大学农学院,宁夏?银川 750021)
  • 出版日期:2020-09-25 发布日期:2020-09-18
  • 基金资助:
    宁夏回族自治区重点研发计划项目(2017BY068)

Geographical Origin Identification of Tan Sheep Meat Based on Mineral Element Profiles of Meat and Environmental Samples

WANG Xuerong, LUO Ruiming, LI Yalei, MA Mengbin   

  1. (College of Agriculture, Ningxia University, Yinchuan 750021, China)
  • Online:2020-09-25 Published:2020-09-18

摘要: 采用电感耦合等离子体质谱仪测定盐池县滩羊肉和环境中25?种矿物元素含量,并结合主成分分析、聚类分析及线性判别分析进一步解析盐池县滩羊肉及环境中矿物元素含量特征,从而筛选盐池滩羊肉产地溯源指标及环境溯源指标,综合肉样及环境矿物质元素信息,建立判别模型并验证。最终筛选出的盐池县滩羊肉矿物元素指标为Cr、Ni、Cu、Rb、Sr、Mo、Ba、Mn、Sn,回代检验和交叉检验的整体正确判别率分别为97.50%、95.00%;盐池县环境矿物元素指标为K、P、Ca、Na、Mg、V、Ni、Zn、Ba、Rb、Cr、Sr、Fe,回代检验和交叉检验的整体正确判别率分别为93.80%、97.50%;盐池县滩羊肉与环境的共同矿物元素溯源指标为Cr、Ni、Rb、Sr、Ba,回代检验和交叉检验的整体正确判别率分别为96.30%、95.00%。说明筛选出的元素对随机滩羊肉样品产地鉴别有效,可作为盐池滩羊肉产地矿物元素指纹溯源的信息指标。

关键词: 盐池滩羊肉;矿物元素;产地溯源

Abstract: In this study, the contents of 25 mineral elements in Tan sheep meat and environmental samples from Yanchi county in Ningxia were determined by inductively coupled plasma-mass spectrometry (ICP-MS). The characteristics of these mineral elements were further analyzed by principal component analysis (PCA), cluster analysis (CA) and linear discriminant analysis (LDA) in order to screen for geographical traceability indicators. A discriminant model was established and verified based on the mineral element profiles of both meat and environmental samples. For meat samples, the mineral elements selected were Cr, Ni, Cu, Rb, Sr, Mo, Ba, Mn and Sn, and the overall accuracy rates of back substitution test and cross validation were 97.50% and 95.00%, respectively. For environmental samples, the mineral elements selected were K, P, Ca, Na, Mg, V, Ni, Zn, Ba, Rb, Cr, Sr and Fe. and the overall accuracy rates of back substitution test and cross validation were 93.80% and 97.50%, respectively. The traceability indexes common to Tan sheep meat and the environment were Cr, Ni, Rb, Sr, and Ba. The overall accuracy rates of back substitution test and cross validation were 96.30% and 95.00%, respectively. This study indicated that the selected mineral elements were effective in identifying the geographical origin of random Tan sheep meat samples, and could be used as indicators for fingerprint geographical traceability of Yanchi Tan sheep meat.

Key words: Tan sheep meat from Yanchi; mineral elements; geographical traceability

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