浦江葡萄同位素与矿物元素特征及地理标志保护模型构建

为探讨稳定同位素与矿物元素在葡萄产地鉴别上的可行性,本研究分别从浦江、浙江其他产地(慈溪、温岭)、上海和安徽4个不同产地采集代表性葡萄样品;通过稳定同位素比率质谱(EA-IRMS)元素分析仪和电感耦合等离子体质谱(ICP-MS)测定其同位素比率与矿物质元素含量,结合化学计量学统计工具对浦江葡萄开展原产地判别研究.结果表...

Stable Isotope and Mineral Element Characteristics and Construction of the Geographic Identification Protection Model of Pujiang Grape

In order to explore the feasibility of mineral elements and stable isotopes in the identification of grape origin,representative samples from 4 different producing areas in Pujiang and Zhejiang(Cixi,Wenling),Shanghai and Anhui was collected.Mineral element content and stable isotope ratio of grape samples were determined by inductively coupled plasma-mass spectrometry(ICP-MS)and elemental analyzer-stable isotope ratio mass spectrometry(EA-IRMS),and the origin identification were discussed by chemometrics.The results showed that theδ¹³C、δ²Handδ¹⁸O in Pujiang grape were significantly different from Anhui grape,while not significantly different from other producing areas in Zhejiang and Shanghai.At the same time,there was no significant difference in Al,Na,Mo,V and Sr between other one or two producing areas,whereas the other mineral elements are significantly different in each producing area.The origin discrimination model of Pujiang grape was established by PLS-DA,in which the discrimination accuracy of Pujiang grape reached 100%and the overall discrimination accuracy reached 75%.The results of this study provide reference methods and research ideas for discriminating grape producing areas on a small spatial scale.