Dipartimento di Scienze, Università degli Studi di Roma TRE, Largo S. Leonardo Murialdo, 1, I-00146 Rome, Italy; Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Via G. La Pira, 4, I-50121 Florence, Italy.
Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Via G. La Pira, 4, I-50121 Florence, Italy.
Food Chem. 2018 Aug 30;258:374-380. doi: 10.1016/j.foodchem.2018.03.083. Epub 2018 Mar 20.
Sr/Sr was determined on fresh red and white grapes, soils and rocks from three selected vineyards to verify the isotopic relationships between the fruit of the vine and geologic substrata of vineyards. Sr/Sr were determined on sampled grapes of four different harvest years and different grape varieties, on bioavailable fraction of soils, on whole soils, and on bedrocks from the geo-pedological substratum of the vineyards. The vineyards chosen for the experimental works belong to an organic farming winery and thus cultivation procedures were strictly controlled. Grapes were sampled during the harvests of four different but consecutive years with Sr/Sr that does not change reflecting the values of the soil bioavailable fraction. No variations among grapes from different vine cultivars were observed. A strict isotope relationship with soil bio-available fraction was observed. These findings demonstrate the reliability of Sr/Sr, even at a very small scale, for food products geographic origin assessment.
在三个选定的葡萄园的新鲜红葡萄和白葡萄、土壤和岩石上测定 Sr/Sr，以验证葡萄果实与葡萄园地质基质之间的同位素关系。对来自四个不同收获年份和不同葡萄品种的采样葡萄、土壤的生物可利用部分、整个土壤和葡萄园地质-土壤基质的基岩进行 Sr/Sr 测定。为实验工作选择的葡萄园属于有机农业酿酒厂，因此严格控制种植程序。在四个不同但连续的收获年份期间对葡萄进行采样，Sr/Sr 没有变化反映了土壤生物可利用部分的值。不同葡萄品种的葡萄之间没有观察到变化。与土壤生物可利用部分之间存在严格的同位素关系。这些发现证明了 Sr/Sr 的可靠性，即使在非常小的范围内，也可用于评估食品的地理来源。
