Phenolic Concentrations and Antioxidant Properties of Wines Made from North American Grapes Grown in China

Molecules

Lei Zhu¹  Yali Zhang¹  Jiajin Deng¹  Huirong Li¹ 

[1] ¹College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China ²Center for Viticulture and Small Fruit Research, Florida Agricultural and Mechanical University, Tallahassee, FL 32317, USA ^†These authors contributed equally to this work.

关键词: wine;    North American grapes;    phenolic concentration and composition;    antioxidant capacity;   

DOI  :  10.3390/molecules17033304

来源: mdpi

【 摘 要 】

The characteristics of wine phenolics found in several North American and (for comparison) European grape cultivars grown in China were analyzed. This was done to find non-Vitis vinifera wines with prominent features in order to diversify the kinds of wines. The phenolic richness and antioxidant activity decreased in the order: red > rose > white wines. In the red wines, the American grape ‘Cynthiana’ had the highest total concentrations of phenols, anthocyanins, flavonols and phenolic acids, as well as antioxidant capacity, followed by the French hybrid ‘Chambourcin’, the lowest were detected in two European grape varieties, ‘Merlot’ and ‘Cabernet Sauvignon’, while the total flavon-3-ols levels were reversed among these red grape cultivars. The highest concentration of stilbenes out of all the wines analyzed was found in the ‘Merlot’ variety. There were significant differences among wine phenolic compositions between North American and European grape cultivars. The antioxidant activities were significantly related to the concentrations of total phenols (r² = 0.996), anthocyanins (r² = 0.984), flavonols (r² = 0.850) and gallic acid (r² = 0.797). The prominent features of wine aroma and nutrition could make the American grape wines attractive to consumers. It is therefore necessary to perform further research on cultural practices and wine making involving these grapes.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.