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通过添加外源酵母衍生物,对Saperavi干红葡萄酒进行香味保存分析
Qianxin Liu1, Rui Xue2, Xinlong Chen1
1College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China.
Food chemistry: X
|August 1, 2025
概括
酵母衍生物,如曼诺蛋白,多糖和富含谷氨的非活化酵母 (G-IDYs),有效地保存葡萄酒.
科学领域:
- 葡萄酒学和葡萄酒化学
- 食品科学与技术 食品科学与技术
背景情况:
- 葡萄酒中的水果和花香主要来自从较高酒精度中衍生出来的 Ester.
- 和高酒精都会在葡萄酒老化过程中降解,影响香味质量.
研究的目的:
- 为了评估酵母人蛋白,酵母多糖和G-IDYs在保存Saperavi干红酒中的挥发性芳香化合物 (VAC) 的有效性.
- 为了确定这些酵母衍生物的最佳剂量,在老化过程中最大限度地保持芳香化合物.
主要方法:
- 用特定剂量的酵母人蛋白,多糖和G-IDYs治疗Saperavi干红酒.
- 在五个月的老化期内监测关键挥发性芳香化合物的度.
- 使用多变量分析,特别是正交部分最小平方差分分析 (OPLS-DA),以区分处理和控制葡萄酒.
主要成果:
- 处于0.2g/L的G-IDYs可分别减少43%和17%的乙烯酸乙烯和异醇的损失.
- 酵母多糖和人蛋白处理改善了中链的保留 (例如,乙烯六酸,乙烯八酸) 的32-68%.
- OPLS-DA证实了处理葡萄酒和对照葡萄酒之间VAC概况的显著差异.
结论:
- 酵母衍生物在葡萄酒老化过程中有效稳定关键的挥发性芳香化合物.
- 这些化合物提供了一种可行的策略,用于增强和保持干红葡萄酒的芳香质量.
- 这项研究为寻求改善葡萄酒保质期和感官属性的酒师提供了实用的见解.
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