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大量和化合物特定的稳定同位素分析用于核桃的认证 (Juglans regia) 起源

Zatil A Athaillah¹, Chris Yarnes², Selina C Wang¹

¹Food Science and Technology Department of University of California, Davis, One Shields Avenue, Davis, California 95616, United States.

Journal of agricultural and food chemistry

|November 2, 2023

概括

新的稳定同位素分析方法可以确定核桃的地理来源. 脂肪酸和氨基酸的化合物特定稳定同位素分析 (CSIA) 有效地区分了核桃的来源.

科学领域:

食品科学食品科学食品科学
分析化学分析化学
农业科学农业科学

背景情况:

消费者对产品原产地信息的需求正在增加.
核桃的地理原产地验证对于市场的完整性至关重要.
确定核桃来源的现有方法需要改进.

研究的目的:

开发和验证新的技术,以区分核桃的地理真实性.
调查稳定同位素分析对核桃原产地确定有用性的研究.
为了比较散装稳定同位素分析 (BSIA) 与化合物特定稳定同位素分析 (CSIA) 的来源歧视.

主要方法:

进行了批量稳定同位素分析 (BSIA),包括δ13C批量,δ15N批量和δ34S批量.
对脂肪酸和氨基酸进行了特定化合物的稳定同位素分析 (CSIA).
利用差异分析 (ANOVA) 和线性差异分析 (LDA) 来进行美国和中国核桃样本的统计比较.

主要成果:

观察到特定同位素比的显著变化,包括δ2H脂肪酸 (δ2HC18:1),δ13C脂肪酸 (δ13CC18:2, δ13CC18:3),以及δ13C和δ2H氨基酸 (δ13CGly, δ13CLeu, δ13CVal, δ2HGlu, δ2HIle, δ2HLeu, δ2HThr).
与BSIA相比,化合物特定稳定同位素分析 (CSIA) 在区分核桃的地理来源方面表现出更高的有效性.
统计分析证实了部分CSIA参数的歧视力.

结论:

脂肪酸和氨基酸的化合物特定稳定同位素分析 (CSIA) 是确定核桃的地理来源的可靠方法.
这种技术为确保核桃产品的真实性和可追溯性提供了一个有价值的工具.
这些发现支持在食品认证和原产地验证中应用先进的分析方法.

关键词:

大量批量批量批量批量一个特定化合物的化合物.原产地认证的真实性它是稳定的同位素.胡果和胡果是一个很好的选择.

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