综合性氨基酸分析:在加利福尼亚州和意大利托斯卡纳种植的葡萄品种
Maísa M M Lima1, Ying Yng Choy1, Ron C Runnebaum1,2
1Department of Viticulture & Enology, University of California, Davis, California, USA.
Journal of food science
|October 16, 2024
概括
葡萄汁的氨基酸概况,包括林和氨酸,根据品种和来源显示出不同的模式. 来自意大利和加利福尼亚的Cabernet franc和Sauvignon显示出强烈的相关性,与Merlot不同.
科学领域:
- * 食品化学 食品化学
- * 分析化学 分析化学
- * 葡萄栽培和葡萄酒学
背景情况:
- *葡萄汁的成分受品种,地形和酒方法的影响.
- *氨基酸是影响葡萄制品风味,香气和营养价值的关键成分.
- *了解氨基酸概况可以帮助品种识别和地理来源确定.
研究的目的:
- *对来自不同品种和地理位置的葡萄汁中的23种氨基酸和谷氨酸进行分析.
- * 调查品种和原产地对氨基酸成分的影响.
- * 为了比较Merlot,Cabernet Sauvignon和Cabernet Franc果汁的氨基酸特征.
主要方法:
- * 在线前列衍生与超高性能液态染色学 (UHPLC) 和光检测相结合.
- *分析了来自意大利的博尔格里 (Bolgheri) 和纳帕谷 (Napa Valley) 的33个葡萄汁样本.
- *使用主要组件分析 (PCA) 和分层集群分析 (HCA) 的统计分析.
主要成果:
- * 观察到普罗林 (PRO),玛胺黄油酸 (GABA) 和氨酸 (ARG) 度的显著变化.
- *与卡伯内索维尼翁和卡伯内弗朗克相比,梅罗特果汁显示出不同的氨基酸概况.
- *来自Bolgheri的Merlot果汁与其他品种的果汁相比,在各个地点之间表现出更高的相似性.
- * 卡伯纳索维尼翁和卡伯纳弗朗克葡萄汁在博尔格里和纳帕谷葡萄园之间表现出更大的相似性.
结论:
- *氨基酸分析有效地根据品种和地理来源区分葡萄汁.
- *来自博尔格里和纳帕山谷的卡伯内特法兰克和卡伯内特索维尼翁果汁具有显著的氨基酸特征相似之处.
- *这项研究为葡萄汁化学提供了宝贵的见解,用于品种和原产地认证.
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