Stable carbon isotope content in ethanol of EC data bank wines from Italy, France and Germany
Stable carbon isotope content in ethanol of EC data bank wines from Italy, France and Germany
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DOI：
10.1007/bf01192881
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发表时间：
1996-01-01
期刊：
影响因子：
--
通讯作者：
Merle, MH
中科院分区：
文献类型：
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作者：
Rossmann, A;Schmidt, HL;Merle, MH
在本工作中，我们讨论了葡萄酒乙醇碳同位素分析对于意大利、法国和德国葡萄酒原产地归属和掺假证明的有用性。首先，通过实验室间的比对测量结果和对相同样品的蒸馏程序的测试，证明了三个实验室的结果的可比性。此外，在所有国家的样品中，可以发现葡萄酒中的糖和乙醇中碳同位素含量的密切相关性。利用1991 ~ 1993年意大利、法国和德国的欧洲共同体数据库葡萄酒δ ~（13）C值，描述和讨论了影响这些值变化的主要因素。通过对加标样品的检测，证明了δ（13）C分析在检测某些类型的葡萄酒富集中的有用性;特别是如果采用C-13-8同位素比质谱法进行的碳同位素分析作为一种额外的工具，用于提高已经通过H-2-NMR正式进行的葡萄酒乙醇中特定位点氢同位素含量测定的安全性。
In the present work we discuss the usefulness of carbon isotope analysis of wine ethanol for the assignment of origin and the proof of adulteration of Italian, French and German wines. At first the comparability of the results from three laboratories is demonstrated by the results of interlaboratory comparison measurement and by tests of the distillation procedures applied to the same samples. Furthermore, a close correlation of carbon isotope content in sugars from must and ethanol from the related wine could be found for samples from all countries. Using the delta(13)C values of EC data bank wines from 1991 to 1993 for Italy, France and Germany, we describe and discuss the main factors of influence which are responsible for the variation of those values. By examination of spiked samples, the usefulness of the delta(13)C analysis in the detection of certain types of wine enrichment is demonstrated; especially if the carbon isotope analysis by C-13-8 isotope ratio mass spectrometry is employed as an additional tool for improving the security of the already officially performed determination of the site-specific hydrogen isotope content in wine ethanol by H-2-NMR.