Monitoring the Authenticity of Organic Grape Juice via Chemometric Analysis of Elemental Data

作者：Borges Endler Marcel^*; Volmer Dietrich A; Brandelero Evandro; Lafayette Neves Gelinski Jane Mary; Gallimberti Matheus; Barbosa Fernando Jr

来源：Food Analytical Methods, 2016, 9(2): 362-369.

DOI：10.1007/s12161-015-0191-x

• Chemometrics
• ICP-MS
• Multi-element fingerprinting
• Organic food
• Quality control
• Grape juice

Elemental determination was carried out on 36 grape juice samples (19 organic and 17 ordinary), with the goal of identifying significant differences between the two types of juice for classification purposes. Inductively coupled plasma-mass spectrometry was used for the determination of 24 elements, Al, As, Ba, Ca, Cd, Ce, Co, Cr, Cu, Fe, La, Mg, Mn, Mo, Na, Ni, P, Pb, Rb, Se, Sn, Ti, V, and Zn. Ba, Ce, La, Mg, P, Pb, Rb, Sn, and Ti concentrations were found to be higher in organic versus ordinary samples, while Na and Va concentrations were higher in ordinary versus organic samples. The remaining investigated elements exhibited statistically equivalent concentration levels in both types of samples. Principal component analysis (PCA) and soft independent modeling of class analogy (SIMCA) statistical techniques of the elemental fingerprints were readily able to discriminate organic from ordinary samples and can be used as alternative methods for adulteration evaluation.

• 出版日期2016-2