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

Autor(es)

Borges, Endler Marcel ^{[1, 2]} ; Volmer, Dietrich A. ^[3] ; Brandelero, Evandro ^[1] ; Lafayette Neves Gelinski, Jane Mary ^[1] ; Gallimberti, Matheus ^[4] ; Barbosa, Jr., Fernando ^[4]

Afiliação do(s) autor(es)

^[1] Univ Oeste Santa Catarina, Nucleo Biotecnol, Rua Paese 198, Bairro Univ Bloco K, BR-89560000 Videira, SC - Brazil

^[2] Univ Reg Blumenau FURB, Dept Quim, Campus 1, Rua Antonio Veiga 140, BR-89012900 Blumenau, SC - Brazil

^[3] Univ Saarland, Inst Bioanalyt Chem, Campus B2-2, D-66123 Saarbrucken - Germany

^[4] Univ Sao Paulo, Fac Cincias Farmaceut Ribeiro Preto, Lab Toxicol & Essencialidade Metais, Ave Cafe S-N, BR-1404903 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: FOOD ANALYTICAL METHODS; v. 9, n. 2, p. 362-369, FEB 2016.
• Citações Web of Science: 5

Resumo

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. (AU)

• Processo FAPESP: 12/03465-1 - Desenvolvimento de novos métodos para determinação de hidrocarbonetos policíclico aromáticos em águas e material particulado utilizando a espectroscopia de Shpol'skii
• Beneficiário: Fernando Barbosa Júnior
• Modalidade de apoio: Auxílio à Pesquisa - Regular