Phenolic characteristics and antioxidant activity of merlot and cabernet sauvignon wines increase with vineyard altitude in a high-altitude region
Phenolic characteristics and antioxidant activity of merlot and cabernet sauvignon wines increase with vineyard altitude in a high-altitude region
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高海拔地区梅洛和赤霞珠葡萄酒的酚类特征和抗氧化活性随着葡萄园海拔的升高而增加
DOI：
10.21548/38-2-1068
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发表时间：
2017-01-01
影响因子：
1.3
通讯作者：
Liu, X.
中科院分区：
文献类型：
--
作者：
Jin, Xiao-duo;Wu, X.;Liu, X.
海拔作为风土表现的一个重要因素，可能会影响葡萄酒的质量。我们评估了海拔及其相关的气候条件对来自高海拔地区的葡萄酿制的红葡萄酒的酚类特征和抗氧化活性的影响。梅鹿辄（ME）和赤霞珠（CS）葡萄酒中总酚、总黄酮和总花色苷含量随海拔升高而增加，赤霞珠葡萄酒单宁含量随海拔升高而增加，海拔较高的梅鹿辄和CS葡萄酒抗氧化能力较强。水杨酸，胡萝卜酸，咖啡酸，（+）-儿茶素，（−）-表儿茶素，和个人的酚类化合物的总和在葡萄酒中增加的基础上的HPLC的结果与海拔高度。ME葡萄酒的感官评价得分随着海拔的升高而增加。最高的分数被确定为CS葡萄酒起源于2 608米。一个明确的分组葡萄酒根据葡萄品种和葡萄园海拔进行了观察，通过主成分分析。回归分析表明，海拔高度，其次是日照时数，在高海拔地区的不同地点的红葡萄酒的酚特性和抗氧化活性的差异作出了最大的贡献。
Altitude, as an important factor in the expression of terroir, may affect wine quality. We evaluated the effect of altitude and its related climatic conditions on the phenolic characteristics and antioxidant activity of red wines made from grapes originating from high-altitude areas. The content of total phenolic compounds, total flavonoids and total anthocyanins increased with altitude in Merlot (ME) and Cabernet Sauvignon (CS) wines. Cabernet Sauvignon wines showed richer tannins with increasing altitude. Merlot and CS wines from higher altitude vineyards, showed a greater antioxidant capacity. Salicylic acid, syringic acid, caffeic acid, (+)-catechin, (−)-epicatechin, and the sum of individual phenolic compounds in the wines increased with altitude based on the results of HPLC. The scores of the sensory evaluation of ME wines increased with higher altitude. The highest score was determined for CS wine originating from 2 608 m. A clear grouping of wines according to grape cultivar and vineyard altitude was observed by principal component analysis. Regression analysis showed that altitude, followed by sunshine hours, made the greatest contribution to differences in the phenolic characteristics and antioxidant activity of red wines at different sites in a high-altitude region.