Abstract：
This study aimed to develop a geographical origin discrimination analytical method for chicken breasts and drumsticks based on inductively coupled plasma (ICP). The sixty elements were set as variables, and the geographical origin discrimination analysis was conducted through chemometrics. In orthogonal partial least square discriminant analysis (OPLS-DA), twenty-three variable importance in projection (VIP) elements were selected in chicken breasts, and twenty-eight VIP elements were selected in drumsticks. The importance of the selected elements was displayed by the area under the curve (AUC) value of the receiver operating characteristic (ROC). Verification of OPLS-DA was performed through permutation test and good results were obtained. A heatmap was also used as a method for determining the geographical origin, and each top element discriminant classification was 100 % accurate, as determined through canonical discriminant analysis (CDA). This method shows potential as a food analysis tool and can accurately determine the geographic origin of chicken.
摘要：
本研究旨在开发一种基于电感耦合等离子体（ICP）的鸡胸肉和鸡腿地理来源判别分析方法。60个元素被设置为变量，并通过化学计量学进行地理来源判别分析。在正交偏最小二乘判别分析(OPLS-DA)中，在鸡胸肉中选择了23个可变的投影重要性(VIP)元素，在鼓槌中选择了28个VIP元素。所选元素的重要性通过接收器操作特征(ROC)的曲线下面积(AUC)值显示。通过置换检验对OPLS-DA进行了验证,取得了良好的结果。热图也被用作确定地理起源的方法，每个顶级元素判别分类都是100%准确的，通过规范判别分析(CDA)确定。该方法显示出作为食品分析工具的潜力，可以准确确定鸡肉的地理来源。
