Abstract This study aimed to determine ellagic acid, vanillic acid, syringic acid, quercetin, and melatonin in samples of wines from Brazil, the Sao Francisco Valley region, and Argentine region (Valle de Uco, Lujan de Cuyo, Mendoza and Neuquen). The phenolic compounds and melatonin were determined by UHPLC MS/MS and HPLC. Quercetin was the compound found in major quantities in Argentine wines. In some bottles of Brazilian wines, vanillic acid and ellagic acid were found in higher bottles compared to Argentine wines. As for syringic acid, as selected filters in Brazilian wines, they were inferior in Argentine wines samples. PCA and HCA were carried out to group the data obtained according to the region of origin of the wines.

中文翻译：

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基于酚类和褪黑激素成分的南美葡萄酒地理特征：探索性分析

摘要 本研究旨在测定来自巴西、圣弗朗西斯科河谷地区和阿根廷地区（Valle de Uco、Lujan de Cuyo、Mendoza 和 Neuquen）的葡萄酒样品中的鞣花酸、香草酸、丁香酸、槲皮素和褪黑激素。酚类化合物和褪黑激素通过 UHPLC MS/MS 和 HPLC 测定。槲皮素是阿根廷葡萄酒中大量发现的化合物。在一些巴西葡萄酒瓶中，香草酸和鞣花酸含量高于阿根廷葡萄酒。至于丁香酸，作为巴西葡萄酒的精选过滤器，在阿根廷葡萄酒样品中则较差。进行 PCA 和 HCA 以根据葡萄酒的原产地对获得的数据进行分组。