期刊
AMERICAN JOURNAL OF ENOLOGY AND VITICULTURE
卷 63, 期 2, 页码 232-240出版社
AMER SOC ENOLOGY VITICULTURE
DOI: 10.5344/ajev.2012.11087
关键词
multielement; grape; wine; soil
资金
- Earmarked Fund for Modern Agro-Industry Technology Research System [CARS-30]
Twenty-eight trace elements and 16 rare earth elements were analyzed through ICP-MS in soils, grapes, and wines from seven wine-producing regions in China. Analysis of variance showed that almost all elements in the grapes and wines and approximately half of the tested elements in the soils existed in statistically significant different amounts on a regional basis. Stepwise linear discriminant analysis (SLDA) revealed 22 parameters (Cr, Co, Ni, Ga, Se, Y, Zr, Nb, Mo, Pd, In, La, Pr, Sm, Eu, Gd, Tm, Yb, Au, Tl, Th, U) to evaluate soils with 93.5% accuracy, 17 parameters (Li, Co, Se, Sr, Zr, Mo, Pd, Cd, In, Ba, La, Ce, Pr, Eu, W, Pt, Au) to assess grapes with 96.5% accuracy, and 10 parameters (Sc, V, Cr, Ga, Se, Sr, Pd, Sn, Tl, U) to distinguish the origin of wines with 100% accuracy. Pearson's r correlation analysis showed a good correlation between grapes and soils and between wines and grapes but a weak correlation between wines and soils in terms of multielements, as only two elements (Se and Pd) were common SLDA descriptors to the three classes of material analyzed. Discrimination of grapes by soil descriptors and wines by grape descriptors suggests that differences in multielement patterns of wines among different regions are largely due to variations in soil geochemistry.
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