Research Group on Viticulture and Enology (GIRVITEN), University of Valladolid, Av. de Madrid, 57, 34004 Palencia, Spain.
Research Group on Viticulture and Enology (GIRVITEN), University of Valladolid, Av. de Madrid, 57, 34004 Palencia, Spain.
Food Chem. 2022 Feb 1;369:130850. doi: 10.1016/j.foodchem.2021.130850. Epub 2021 Aug 13.
Recent studies have shown that mild to moderate iron chlorosis can have positive effects on grape quality potential, including volatile profile. The main objective of this work was to investigate, for the first time, how moderate iron stress in grapevines affects the presence of volatile organic compounds (VOCs) in wines. The study was carried out during 2018-2019 seasons, in 20 Tempranillo vineyard subzones with different degree of iron deficiency, located in Ribera del Duero (North-Central Spain). The results showed that moderate iron stress increased in wines the concentrations of VOCs associated with floral notes, such as 2-phenylacetaldehyde, 2-phenylethanol and 2-phenylethyl acetate, while reducing the presence of C6-alcohols, responsible for green-herbaceous aroma. A favourable reduction of pH and a betterment of parameters related to colour were detected in wines from iron deficient subzones. Chlorosis incidence was associated to improvements in wine sensory attributes as layer intensity, black fruit and aroma intensity.
最近的研究表明,轻度到中度的缺铁性胁迫对葡萄品质有积极影响,包括挥发性成分。本研究的主要目的是首次研究中度铁胁迫对葡萄酒中挥发性有机化合物(VOCs)存在的影响。该研究于 2018-2019 年在位于西班牙中北部里贝拉德尔杜埃罗(Ribera del Duero)的 20 个不同缺铁程度的添普兰尼洛(Tempranillo)葡萄园亚区进行。结果表明,中度铁胁迫会增加葡萄酒中与花香相关的 VOCs 浓度,如 2-苯乙醛、2-苯乙醇和 2-苯乙基乙酸酯,而降低 C6-醇的含量,C6-醇会产生青草味。在缺铁亚区的葡萄酒中,检测到 pH 值的有利降低和与颜色相关的参数的改善。黄化病的发生率与葡萄酒感官属性的改善有关,如层次感、黑色水果和香气强度。