Abstract Dry matter, soluble solids content, titratable acidity, sugars, organic acids, vitamin C and polyphenol contents were determined in four blood-flesh and ten white-flesh peach cultivars. Among polyphenols, kaempferol-3-glucoside, p-coumaroylquinic acid, cryptochlorogenic acid, and cyanidin-3-rutinoside were reported for the first time in blood-flesh peaches. Two pyranoanthocyanins were also reported for the first time in Prunus persica. As expected, anthocyanin content was significantly higher in blood-flesh fruits, but our results also showed they are above all richer in hydroxycinnamic acids and flavonols. Chlorogenic acid content was 4 times higher in blood-fleshed fruits and those of quercetin glycosides 20–40 times higher. Conversely, (+)-catechin content was twice higher in white-flesh fruits. Among other bioactive compounds, vitamin C content was also 40 % significantly higher in blood-flesh fruits. As regards quality parameters, if levels of titratable acidity and total organic acids were about 2-fold significantly higher in blood-flesh fruits, those of total sugars and soluble solids contents were not significant. All these results show that blood-flesh peach cultivars represent an important source of antioxidants, and therefore suggest they are nutritionally interesting for health.

中文翻译：

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四种欧洲商业血肉桃品种 (Prunus persica L. Batsch) 的理化特性、维生素 C 和多酚成分

摘要 测定了4个血肉桃和10个白肉桃品种的干物质、可溶性固形物含量、可滴定酸度、糖类、有机酸、维生素C和多酚含量。在多酚类物质中，山奈酚-3-葡萄糖苷、对香豆酰奎宁酸、隐绿原酸和花青素-3-芸香苷在桃子血肉中首次报道。在 Prunus persica 中也首次报道了两种吡喃花青素。正如预期的那样，血肉水果中的花青素含量明显更高，但我们的结果还表明，它们首先富含羟基肉桂酸和黄酮醇。血肉果实中的绿原酸含量高出 4 倍，而槲皮素糖苷中的绿原酸含量高出 20-40 倍。相反，(+)-儿茶素含量在白肉水果中高出两倍。在其他生物活性化合物中，血肉水果中的维生素 C 含量也显着高出 40%。在质量参数方面，如果血肉果实的可滴定酸度和总有机酸水平显着高约2倍，则总糖和可溶性固形物含量不显着。所有这些结果表明，血肉桃品种代表了抗氧化剂的重要来源，因此表明它们在营养上对健康有益。