地理来源,葡萄和土壤对Ecolly葡萄中稳定的同位素和矿物质元素的影响,以追溯性
Guihua Zeng1, Xiaoyun Hao2, Hua Wang3
1School of Food Science and Technology, Shihezi University, Shihezi, Xinjiang 832000, China; College of Enology, Shaanxi Engineering Research Center for Viti-viniculture, Northwest A&F University, Yangling, Shaanxi 712100, China.
Food chemistry
|October 8, 2023
概括
葡萄中的稳定同位素和多元素配置显示出明显的区域和年份差异. 这些发现建立了一种可靠的方法,用于使用土壤和葡萄分析来验证葡萄的来源和年份.
科学领域:
- 农业科学 农业科学
- 分析化学 分析化学
- 地质化学 地质化学
背景情况:
- 葡萄的原产地和年份对葡萄酒的质量和市场价值有很大的影响.
- 准确的身份验证方法对于防止欺诈和确保消费者信任至关重要.
研究的目的:
- 调查稳定同位素和多元素配置文件的实用性,以区分葡萄的来源和年份.
- 为葡萄的真实性建立一个强大的分析方法.
主要方法:
- 稳定同位素比 (δ2H, δ18O) 通过同位素比质谱法 (IRMS) 确定.
- 使用感应合等离子体质谱法 (ICP-MS) 进行多元元素分析.
- 统计分析包括主要组件分析 (PCA),集群分析 (CA),冗余分析,斯皮尔曼分析,随机森林 (RF) 和部分最小平方差异分析 (PLS-DA).
主要成果:
- 在不同葡萄的原产地和年份之间观察到同位素和元素配置的显著差异.
- 葡萄和土壤的同位素和元素组成显示出强烈的相关性.
- 确定了K,Tb,Cs,δ2H和Co等关键变量作为葡萄起源的重要歧视因素.
- 随机森林 (RF) 在歧视葡萄的来源和年份方面表现优于PLS-DA.
结论:
- 葡萄的同位素和元素形状明显受到地理来源,年份和土壤成分的影响.
- 稳定同位素和多元元素配置的综合分析提供了一个有希望和可靠的方法来验证葡萄的来源和年份.
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