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根据风格和年龄对港口葡萄酒的歧视,使用颜色特征,和色素成分

Juliana Milheiro¹, Luís Filipe-Ribeiro¹, Fernanda Cosme²

¹CQ-VR - Chemistry Research Centre - Vila Real, FoodWin - Food and Wine Chemistry Lab, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal.

Food research international (Ottawa, Ont.)

|September 10, 2023

概括

波特葡萄酒的颜色受到葡萄和老化的影响,可以使用色彩特征区分白色,陶尼和红宝石风格. 棕色影响白葡萄酒和唐尼葡萄酒,而氧化影响红宝石葡萄酒的颜色.

科学领域:

葡萄酒学葡萄酒学葡萄酒学
食品化学食品化学
感官科学感官科学

背景情况:

波特葡萄酒的颜色是关键的质量指标,受到葡萄品种和老化的影响.
葡萄酒风格,年龄表示 (IOA) 和成分之间的关系在很大程度上仍未被探索.
染色特征为理解这些复杂的相互作用提供了潜在的途径.

研究的目的:

为了研究白色,陶尼和红宝石港口葡萄酒的色彩特性 (CIELab).
为了将这些色彩特征与不同葡萄酒风格和IOA类别的葡萄酒的化合物组成联系起来.
评估使用色度数据来区分波特葡萄酒类型的可行性.

主要方法:

使用CIELab颜色空间进行色度分析.
化合物的光谱测量测定.
应用各种数据分析模型进行分类.
在不同的港口葡萄酒风格 (白色,Tawny,Ruby) 和IOA类别中进行了比较研究.

主要成果:

港口葡萄酒风格和IOA类别使用色彩数据和分析模型成功进行了区分.
在较老的白色和陶尼港口中,较高的b*值 (黄色/棕色色调) 与糖的棕色化有关,而不是氧化.
氧化对于降低IOA较高的Tawny Ports的红色 (a*值) 是至关重要的.

结论:

彩色特征是有效的区分港口葡萄酒风格和IOA类别.
糖棕色显著导致老年白色和Tawny港口的颜色变化.
氧化过程在Tawny Ports的色彩演变中起着至关重要的作用,特别是影响红色的色调.

关键词:

颜色特征颜色特征颜色特征分类模型的分类模型.歧视性模型是不同的.化合物组成化合物组成葡萄酒葡萄酒葡萄酒葡萄酒葡萄酒红宝石港湾葡萄酒葡萄酒塔尼港口葡萄酒葡萄酒白色的港口葡萄酒葡萄酒

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