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Artigo Produção Nacional Revisado por pares
BIBTEX RIS

Chemical profiling of guarana seeds ( Paullinia cupana ) from different geographical origins using UPLC-QTOF-MS combined with chemometrics

2017; Elsevier BV; Volume: 102; Linguagem: Inglês

10.1016/j.foodres.2017.09.055

ISSN

1873-7145

Autores

Givaldo Souza da Silva, Kirley Marques Canuto, Paulo Riceli Vasconcelos Ribeiro, Edy Sousa de Brito, Madson Moreira Nascimento, Guilherme Julião Zocolo, Janclei Pereira Coutinho, Raildo Mota de Jesus,

Tópico(s)

Phytochemicals and Antioxidant Activities

Resumo

Paullinia cupana, commonly known as guarana, is an Amazonian fruit whose seeds are used to produce the powdered guarana, which is rich in caffeine and consumed for its stimulating activity. The metabolic profile of guarana from the two largest producing regions was investigated using UPLC-MS combined with multivariate statistical analysis. The principal component analysis (PCA) showed significant differences between samples produced in the states of Bahia and Amazonas. The metabolites responsible for the differentiation were identified by orthogonal partial least squares discriminant analysis (OPLS-DA). Fourteen phenolic compounds were characterized in guarana powder samples, and catechin, epicatechin, B-type procyanidin dimer, A-type procyanidin trimer and A-type procyanidin dimer were the main compounds responsible for the geographical variation of the samples.

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