Journal
FOOD RESEARCH INTERNATIONAL
Volume 102, Issue -, Pages 700-709Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.foodres.2017.09.055
Keywords
Paullinia cupana; Geographical origin; QTOF-MS; PCA; OPLS-DA
Categories
Funding
- CAPES
- CNPq [465335/2014-4]
- FINEP
- FAPESB [0011/2014]
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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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