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首页> 外文期刊>Journal of mass spectrometry: JMS >delta N-15 from soil to wine in bulk samples and proline
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delta N-15 from soil to wine in bulk samples and proline

机译：散装样品和脯氨酸中从土壤到葡萄酒的N-15增量

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The feasibility of using N-15 as an additional isotopic marker able to link wine to its area of origin was investigated. The whole production chain (soil-leaves-grape-wine) was considered. Moreover, the research included evaluation of the effect of the fermentation process, the use of different types of yeast and white and red vinification, the addition of nitrogen adjuvants and ultrasound lysis simulating wine ageing. The N-15 of grapes and wine was measured in bulk samples and compounds, specifically in proline, for the first time. Despite isotopic fractionation from soil to wine, the N-15 values of leaves, grapes, wine and particularly must and wine proline conserved the variability of N-15 in the growing soil. Fermentation and ultrasound treatment did not affect the N-15 values of grape must, which was therefore conserved in wine. The addition of inorganic or organic adjuvants was able to influence the N-15 of bulk wine, depending on the amount and the difference between the N-15 of must and that of the adjuvant. The N-15 of wine proline was not influenced by adjuvant addition and is therefore the best marker for tracing the geographical origin of wine. Copyright (c) 2016 John Wiley & Sons, Ltd.
机译：研究了使用N-15作为能够将葡萄酒与其原产地联系起来的附加同位素标记的可行性。考虑了整个生产链（土壤-叶子-葡萄-酒）。此外，研究包括评估发酵过程的效果，使用不同类型的酵母和白色和红色葡萄酒酿造，添加氮佐剂和模拟葡萄酒陈化的超声波裂解。首次在散装样品和化合物中，特别是脯氨酸中测量了葡萄和葡萄酒的N-15。尽管从土壤到葡萄酒进行了同位素分馏，但叶片，葡萄，葡萄酒（尤其是葡萄汁和脯氨酸）的N-15值仍保持了生长土壤中N-15的变异性。发酵和超声波处理不会影响葡萄汁的N-15值，因此葡萄汁中的N-15值得以保存。无机或有机佐剂的添加能够影响散装酒的N-15，这取决于必需品和佐剂的N-15的含量和差异。葡萄酒脯氨酸的N-15不受佐剂添加的影响，因此是追踪葡萄酒地理起源的最佳标记。版权所有（c）2016 John Wiley＆Sons，Ltd.

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