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Provedor de dados:  Ciênc. Tecnol. Aliment.
País:  Brazil
Título:  A multivariate approach to differentiate yerba mate (Ilex paraguariensis) commercialized in the southern Brazil on the basis of phenolics, methylxanthines and in vitro antioxidant activity
Autores:  ZIELINSKI,Acácio Antonio Ferreira
BORTOLINI,Débora Gonçalves
Demiate,Ivo Mottin
Data:  2020-01-01
Ano:  2020
Palavras-chave:  Bioactive compounds
Geographical origin
Pattern recognition
Resumo:  Abstract The consumption of yerba mate beverages is related to several health benefits. These desirable properties are mainly due to the bioactive compounds. However, the levels of those compounds are directly affected by factors such as geographical origin. This study aimed to use chemometrics to evaluate the antioxidant compounds of yerba mate (consumed as chimarrão) marketed in southern Brazil. Neochlorogenic acid and caffeine were the main bioactive compounds found in this type of yerba mate beverage (chimarrão). The dataset was analyzed by chemometrics, and principal component analysis using the first three principal components explained 61.30% of the total variance. Hierarchical cluster analysis suggested three clusters, with cluster 1 containing the majority of the samples from the states of Rio Grande do Sul and Paraná, with higher levels of phenolics, methylxanthines, and antioxidant activity. The supervised methods, soft independent modeling of class analogy (SIMCA) and partial least squares-discriminant analysis (PLS-DA), had similar predictability (≥75% of accuracy) in terms of classifying yerba mate according to different Brazilian regions. Therefore, the chemometric tools used in the current study was suitable to monitor and assess a large variation of the antioxidant composition of yerba mate from different southern Brazilian states.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Sociedade Brasileira de Ciência e Tecnologia de Alimentos
Relação:  10.1590/fst.15919
Formato:  text/html
Fonte:  Food Science and Technology n.ahead 2020
Direitos:  info:eu-repo/semantics/openAccess

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