葡萄酒
食品科学
化学
芳香
多酚
葡萄酒的香气
葡萄酒颜色
丹宁
口感
味道
感官分析
苯乙醛
花青素
葡萄酒的陈酿
抗氧化剂
原材料
有机化学
作者
Sara Ferrero-del-Teso,Ignacio Arias,Ana Escudero,Vicente Ferreira,Purificación Fernández-Zurbano,María-Pilar Sáenz-Navajas
标识
DOI:10.1016/j.lwt.2019.108848
摘要
Among the different grape factors involved in wine quality, the present work is focused on evaluating the effect of grape maturity on wine flavour and how these sensory effects are related to wine chemical composition. Moristel grapes were collected from two vine blocks, with a priori maximum variability in terms of grape quality, at three and four different points of maturation. Wines were elaborated in triplicate yielding 21 wine samples. Sensory characterisation of samples was carried out by a trained panel following the rate-all-that-apply method. Volatiles and non-volatiles with known sensory impact were quantified. Grape maturity generated significant sensory effects on wine astringency and fruity aromas including “raisin”, “black fruit” and “red fruit”. Interestingly, a significant effect on “oxidation” nuances revealed a general pattern in the appearance of higher oxidation aromas in wines elaborated with grapes prematurely harvested. This attribute was related to concentrations of free acetaldehyde, methional, phenylacetaldehyde and isoaldehydes, and aldehyde reactive polyphenols. The presence of “raisin” aroma was linked to β-damascenone, which was suggested to be formed during the on-vine dehydration process. “Astringency” was related to ethanol content, tannin activity (measured as the interaction of tannins with a hydrophobic surface), and the content in anthocyanin derived compounds.
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