Quantificação de minerais e isômeros de tocoferóis em castanhas através da abordagem quimiométrica

Souza, Nilson Evelazio deRodrigues, Angela ClaudiaSouza, Aloisio Henrique PereiraMatsushita, MakotoPedrão, Mayka ReghianyDias, Lucia Felicidade

The levels of the α, δ, and (β+γ)-tocopherol isomers and the amounts of the minerals Se, Zn, Ca, Fe, K,Mn, Mg, and Cu were analyzed in chestnuts. High contents of Zn (>65%) relative to the recommendeddietary intake (RDI) were found in all chestnuts except macadamia nuts (25% of the RDI). All sampleshad Se contents higher than the RDI: Brazil nuts > macadamia nuts, cashew nuts > pecans > almonds> pistachio nuts > hazelnuts > European nuts. A greater concentration of α-tocopherol was found inalmonds (30% of RDI). All samples, except for hazelnuts, almonds, and macadamia nuts, had (γ+β)-tocopherols, with the largest amount found in pistachios. Only pecan nuts and European nuts hadδ-tocopherol and only in low amounts. Multivariate analysis allowed for better characterization anddistinction of the chestnuts.(AU)

1. antioxidants
2. selênio
3. zinc
4. zinco
5. Análise de componentes principais
6. selenium
7. Principal component analysis
8. antioxidantes