Department of Food Science and Istituto per la Ricerca e le Applicazioni Biotecnologiche per la Sicurezza e la Valorizzazione dei Prodotti Tipici e di Qualità, University of Foggia, Via Napoli, 25, 71100 Foggia, Italy.
J Agric Food Chem. 2011 Sep 28;59(18):9815-26. doi: 10.1021/jf203003c. Epub 2011 Sep 2.
Seven table grape cultivars grown in Apulia region were considered: Italia, Baresana, Pizzutello, Red Globe, Michele Palieri, Crimson Seedless, and Thompson Seedless. Seeds, skins and pulps were extracted and analyzed for their phenolic profiles and antioxidant activities. The hierarchy in the phenolic contents was seeds, skins, and pulps. These results indicate that the intake of the whole berries (seeds included) must be strongly recommended. The highest phenolic contents were detected on Italia and Michele Palieri cv., respectively within the white and the red/black table grapes. Seeds gave a high contribution to the berry antioxidant activity, as they had higher phenolic content than skins and contained high quantities of proanthocyanidines, but the strongest antioxidant activity was shown by the pulp juices due to their content in hydroxycinnamyl acids. The principal component analysis applied to the phenolic composition and antioxidant activity of skins, pulps, and seeds allowed a good separation of Italia and Michele Palieri cultivars. According to the cluster analysis, cultivars were grouped into two clusters, one including Michele Palieri and the other one including Italia, Baresana, Pizzutello, and Thompson Seedless.
研究了在普利亚地区种植的 7 个葡萄品种：Italia、Baresana、Pizzutello、Red Globe、Michele Palieri、Crimson Seedless 和 Thompson Seedless。提取并分析了种子、果皮和果肉的酚类物质组成和抗氧化活性。酚类物质含量的层次是种子、果皮和果肉。这些结果表明，必须强烈推荐摄入整个浆果（包括种子）。在白葡萄和红/黑葡萄中，Italia 和 Michele Palieri 品种的种子中分别检测到最高的酚类物质含量。种子对浆果的抗氧化活性有很大的贡献，因为它们的酚类物质含量高于果皮，并且含有大量的原花青素，但由于含有羟基肉桂酸，果肉汁显示出最强的抗氧化活性。主成分分析应用于果皮、果肉和种子的酚类物质组成和抗氧化活性，能够很好地区分 Italia 和 Michele Palieri 品种。根据聚类分析，品种被分为两个集群，一个集群包括 Michele Palieri，另一个集群包括 Italia、Baresana、Pizzutello 和 Thompson Seedless。
