Brescia M A, Di Martino G, Guillou C, Reniero F, Sacco A, Serra F
Dipartimento di Chimica, Campus Universitario, Università di Bari, Via Orabona 4, 70126 Bari, Italy.
Rapid Commun Mass Spectrom. 2002;16(24):2286-90. doi: 10.1002/rcm.860.
The identification of the geographical origin of foods is attracting great interest from consumers and producers since it may be used as a criterion for guaranteeing quality and authenticity. Stable isotope techniques can provide useful information on the origin of food products. The natural abundance isotopic ratios of carbon, oxygen and nitrogen were determined and a comparison made between the isotopic content of samples originating from Italy and those of samples originating from other countries (Canada, Turkey, Australia). A correlation was found between the isotopic composition and geographical origin of the samples. The relationship between isotopic content and the latitude has been confirmed.
食品地理来源的鉴定正吸引着消费者和生产者的极大兴趣，因为它可作为保证质量和真实性的一个标准。稳定同位素技术能够提供有关食品来源的有用信息。测定了碳、氧和氮的自然丰度同位素比率，并对源自意大利的样品与源自其他国家（加拿大、土耳其、澳大利亚）的样品的同位素含量进行了比较。发现样品的同位素组成与其地理来源之间存在相关性。同位素含量与纬度之间的关系也得到了证实。
