评估混合牛奶奶酪的来源复杂性: 综合性同位素和多元元素方法 格拉维埃拉纳克索斯 PDO
Majda Nikezić1,2, Paraskevi Chantzi3,4, Johanna Irrgeher5
1Department of Environmental Sciences, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia.
Foods (Basel, Switzerland)
|August 29, 2024
概括
这项研究使用 (Sr) 同位素和元素分析分析了Graviera Naxos奶酪的地化学特征. 结果显示,海盐显著影响奶酪的Sr签名,使原产地认证复杂化.
科学领域:
- 地质化学 地质化学
- 食品科学 食品科学 食品科学
- 同位素分析的分析.
背景情况:
- 格拉维埃拉纳克索斯 (Graviera Naxos) 是一种由混合牛奶 (牛奶,山羊奶,羊奶) 制成的原产地保护名称奶酪.
- 证明乳制品的地理来源是复杂的.
- (Sr) 同位素是地理来源的潜在指标.
研究的目的:
- 为了确定格拉维埃拉纳克索斯奶酪的地化学特征.
- 评估同位素对验证其地理来源的有用性.
- 为了研究环境因素和成分对奶酪同位素组成的影响.
主要方法:
- 对Sr同位素 (87Sr/86Sr) 和多元素组成的分析.
- 来自纳克索斯岛的格拉维埃拉纳克索斯奶酪,牛奶,料,水和土壤的采样.
- 应用混合模型来确定奶酪Sr签名中的成分贡献.
主要成果:
- 格拉维埃拉纳克索斯的样本显示了一个狭窄的Sr/Sr范围 (0.708910.70952).
- 牛奶的Sr同位素特征受到来自不同地质区域的料的影响,而不仅仅是当地环境.
- 一个混合模型表明,海盐对奶酪的Sr签名的平均贡献为73.1%.
结论:
- 由于料的影响,牛奶的Sr同位素特征并不总是当地的育种环境的可靠指标.
- 海盐是格拉维埃拉纳克索斯奶酪Sr同位素特征的主要贡献者.
- 复杂的地化学方法是必要的,以准确验证乳制品的地理来源.
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