The Use of Trace Element Data to Complement Stable Isotope Methods in the Characterization of Grape Musts
The Use of Trace Element Data to Complement Stable Isotope Methods in the Characterization of Grape Musts
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使用微量元素数据补充稳定同位素方法来表征葡萄汁
DOI：
10.5344/ajev.1994.45.1.79
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发表时间：
1994
影响因子：
1.9
通讯作者：
G. Martin
中科院分区：
文献类型：
--
作者：
M. Day;Ben;G. Martin
用于表征农产品的客观物理化学方法是提供有关食品成分和来源的公正信息的重要方法。在该领域成功的技术中，稳定同位素分析，尤其是通过核磁共振 (SNIF-NMR) 研究的位点特异性天然同位素分馏是最值得注意的。使用该技术可以确定食品工业中各种成品和原材料的地理来源。该技术目前在葡萄酒行业中的能力可以确定一般的生产区域。为了提高 snif-nmr 方法的准确性，对法国五个地区（1989 年年份）的微量元素浓度进行了分析。当与稳定同位素比率结合使用时，元素 Zn、Ca、Sr 和 Mg 将总体分类从 78%（仅使用同位素数据）提高到 89%。
Objective physico-chemical methods for the characterization of agricultural produce are important ways of providing impartial information on the composition and origin of food products. Of those techniques successful in this area, stable isotope analyses and especially Site Specific Natural Isotope Fractionation studied by nuclear magnetic resonance (SNIF-NMR) are among the most noteworthy. The use of this technique allows the determination of geographical origin of a variety of finished and raw materials in the food industry. The current capabilities of this technique in the wine industry allow the general area of production to be determined. Trace element concentrations have been analyzed for five regions of France (1989 vintage) in order to improve the accuracy of the snif-nmr method. When used in conjunction with stable isotope ratios, the elements Zn, Ca, Sr, and Mg increase the overall classification from 78% (with isotope data only) to 89%.