河西走廊新引品种红葡萄酒酚类物质及颜色分析

Analysis of phenolics and color in red wines brewed by grape varieties newly introduced in Hexi corridor

该试验以7个河西走廊新引红葡萄品种(系)作为材料通过小容器发酵工艺酿造干红葡萄酒,测定了酒样的基础理化指标,总酚、单宁、花色苷、黄酮醇、黄烷醇和酒石酸酯的含量,以及CIELab颜色参数,对新引品种葡萄酒的酿酒特性进行了分析,以期为新引红葡萄品种的推广种植提供理论基础。结果表明,未经人工调酸,新引葡萄品种酒样的总酸含量为6.71~9.64 g/L,陈酿1年后卡本内·维洛斯酒样总酸变化较小,或能助力解决目前西北产区葡萄原料酸度不足的问题。此外,马瑟兰酒样的黄酮醇和酒石酸酯的含量较高,分别为354.81、311.85 mg/L,具有保持颜色稳定的潜力。与此同时,卡本内·维洛斯、莱博、小味尔多和赤霞珠169酒样酚类物质含量较高,其中卡本内·维洛斯酒样总酚含量为2349.70 mg/L,单宁含量为818.57 mg/L,具有良好的陈年潜力。

Seven newly introduced red grape varieties(clones)from the Hexi corridor were vinified into dry red wines by a small vessel fermentation process.The basic physicochemical parameters of the wine samples,the content of total phenols,tannins,anthocyanins,flavanols,flavanols and tartaric esters,as well as the CIELab color parameters,were determined.This was followed by an analysis of the winemaking characteristics of the newly introduced varieties to provide a theoretical basis for the promotion of their cultivation.The results showed that the total acid content of the wine samples ranged from 6.71 to 9.64 g/L without manual acid adjustment.After one year of ageing,the Cabernet Volos sample showed low variation in total acidity,which seems to contribute to solving the current problem of acidity deficiency in grapes from north-western China.Compared to the others,the Marselan sample had higher levels of flavanol and tartaric acid esters at 354.81 and 311.85 mg/L respectively,with the possibility of maintaining stable color.Meanwhile,Cabernet Volos,Rebo,Petit Verdot and Cabernet Sauvignon 169 contained higher amounts of phenolics.Among them,Cabernet Volos had 2349.70 mg/L of total phenols and 818.57 mg/L of tannins,offering excellent ageing potential.