Dipartimento di Biologia, DBAF, Università degli Studi della Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy.
J Agric Food Chem. 2012 Jan 11;60(1):7-15. doi: 10.1021/jf204289u. Epub 2011 Dec 30.
In this study the characterization of white wines produced from the monovarietal 'Greco bianco' grape variety is presented for the first time. A total of 40 commercial wines, from two different southern Italian regions, Calabria and Campania, from the same grape variety and two different vintages, were investigated. The analyses were performed by means of chromatographic methods, conventional analyses, and nuclear magnetic resonance (NMR) spectroscopy. No differentiation was observed according to the year of production but a significant discrimination was achieved using principal component analysis (PCA) and partial least squares-discriminant analysis (PLS-DA). In particular, PLS-DA allowed the selection of compounds (total acidity; citric, malic, succinic, and lactic acids; total polyphenol index; glucose and proline/arginine ratio) useful for differentiating the studied wines on the basis of geographical origin.
本研究首次对单一品种‘Greco bianco’葡萄酿造的白葡萄酒进行了特征描述。共分析了来自意大利南部两个不同地区卡拉布里亚和坎帕尼亚的 40 种商业葡萄酒，这些葡萄酒均由同一品种和两个不同年份的葡萄酿造。采用色谱法、常规分析法和核磁共振波谱法（NMR）进行了分析。未观察到根据生产年份的差异，但主成分分析（PCA）和偏最小二乘判别分析（PLS-DA）实现了显著的区分。特别是，PLS-DA 允许选择化合物（总酸度；柠檬酸、苹果酸、琥珀酸和乳酸；总多酚指数；葡萄糖和脯氨酸/精氨酸比），这些化合物可用于根据地理来源区分所研究的葡萄酒。
