1. 广州海关广东省动植物与食品进出口技术措施研究重点实验室
2. 广州医科大学药学院
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卢丽, 刘青, 丁博, 等. 元素含量分析应用于樱桃产地溯源[J]. 分析测试学报, 2020,39(2):219-226.
Origin Traceability of Cherries by Mineral Element Analysis[J]. 2020,39(2):219-226.
利用电感耦合等离子体质谱仪(ICP-MS)和电感耦合等离子体发射光谱仪(ICP-OES)对来自美国、加拿大和中国3个地区的92份樱桃中51种元素含量进行测定,并结合化学计量学中主成分分析(PCA)和偏最小二乘法-判别分析(PLS-DA),建立了基于元素含量的判别模型对3个地区樱桃进行区分。结果表明,PCA和PLS-DA多元统计模型均可区分中国和美国、加拿大和中国来源的樱桃样品,中国樱桃与美国、加拿大两国樱桃样品具有显著聚集特征,但美国与加拿大两国樱桃样品聚集交叉在一起。樱桃样品的PLS-DA产地溯源鉴定模型显示,Pr、Nd、Ce、Y、Co、Mo、Mn、Dy、Gd、Ni、Ho、Sm、Sr、Er、Ga、U、Na、Yb、Be和Zn 20种元素为主要显著元素变量,根据这20种元素含量分布情况即可构建樱桃的产地溯源鉴定模型。PLS-DA产地溯源鉴定模型对3个产地来源樱桃样品识别率分别是美国50%、加拿大83.3%和中国83.3%。
A total of 92 samples from three countries,ie.the United States,Canada and PR.China were determined by inductively coupled plasma mass spectrometry(ICP-MS) and inductively coupled plasma(ICP)-optical emission spectroscopy(OES).A regional discrimination model was set up using the mineral element content combined with chemometrics of Principal component analysis(PCA) and Partial least squares discriminant analysis(PLS-DA).Results showed that the PCA and PLS-DA multivariate statistical models could be used to distinguish the cherry samples from these three countries.Cherries from the United States,Canada and China appeared a certain clustering effect,but Canadian cherries exhibited a certain intersection with American cherries.The PLS-DA origin traceability model for cherry samples showed that 20 elements such as Pr,Nd,Ce,Y,Co,Mo,Mn,Dy,Gd,Ni,Ho,Sm,Sr,Er,Ga,U,Na,Yb,Be and Zn were the main significant elemental variables.According to the distribution of these 20 elements,the traceability identification model for cherries could be constructed.The identification rates of the PLS-DA origin traceability model for the three source cherry samples was 50% from the US,83.3% from Canada and 83.3% from China.
樱桃元素分析产地溯源PCAPLS-DA
cherryelement analysisorigin traceabilityPrincipal component analysis(PCA)Partial least squares discriminant analysis(PLS-DA)
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