Prosecco wine is one of the most important products of the Italian oenological landscape. Its production is strictly regulated by several disciplinary. Thus, it is important to verify the quality of the final product, to defend the uniqueness of this wine. This work describes a rapid method to discriminate among varieties of Italian Prosecco wine using the volatile-fraction distribution as an untargeted fingerprint. The volatile profile corresponds to gas-chromatograms obtained in head-space mode. Principal components analysis of chromatograms allows discriminating the Prosecco samples depending on geographical origin, cultivation practices, and wine-making technologies. In particular, conventional vs. biological agriculture and manual vs. mechanical harvesting give well-separated clusters when projected on a scores plot. Influence plots allow evaluating which variables are the most effective to describe the differences between oenological classes, which are declared in the label and coded in the disciplinary of origin denomination. The identification of discriminating molecules in the volatile profile is also performed by Kovats indexes. Thus, possible chemical markers for the classification of Italian Prosecco wines are appointed.

中文翻译：

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顶空气相色谱法基于挥发性成分作为化学计量指纹图谱快速区分意大利普罗赛克葡萄酒

普罗塞克葡萄酒是意大利酿酒领域最重要的产品之一。它的生产受到几个学科的严格控制。因此，重要的是要验证最终产品的质量，以捍卫这种葡萄酒的独特性。这项工作描述了一种使用挥发分分布作为非目标指纹来区分意大利Prosecco葡萄酒品种的快速方法。挥发性成分对应于在顶空模式下获得的气相色谱图。通过色谱图的主成分分析，可以根据地理来源，耕种方法和酿酒技术来区分Prosecco样品。特别是，在计分图上进行投影时，常规农业与生物农业以及手工农业与机械农业的收割效果很好。影响图可以评估哪些变量最能描述酿酒学类别之间的差异，这些变量在标签中声明并在原产地名称的学科中进行编码。挥发性成分中的鉴别分子的鉴定也通过Kovats指数进行。因此，为意大利Prosecco葡萄酒的分类指定了可能的化学标记。