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Electrophoresis 2020-Aug

Polyphenolic compounds with biological activity in guabiroba fruits (Campomanesia xanthocarpa Berg.) by comprehensive two-dimensional liquid chromatography

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Stefany Arcari
Katia Arena
Jeferson Kolling
Paloma Rocha
Paola Dugo
Luigi Mondello
Francesco Cacciola

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This study aimed to evaluate the polyphenolic composition along with the biological activity of guabiroba (Campomanesia xanthocarpa Berg.) fruits using comprehensive two-dimensional liquid chromatography (LC×LC). A simplex centroid design comprising three solvents (methanol, 2% acetic acid and acetonitrile) was used to optimize the extraction mixture for polyphenols from ripe and unripe guabiroba fruits. A quantitative LC×LC platform was proposed to characterize the guabiroba extracts using a RP-Amide column and a C18 column in the first and second dimensions, respectively. Anti-diabetic properties, using in vitro enzyme assay models and in vivo antioxidant activity with the eukaryote model Saccharomyces cerevisiae, was measured. Total phenolics compounds were more efficiently extracted with 2% acetic acid solution and acetonitrile (50:50, v/v). A total of 37 different compounds were identified and quantified using the proposed LC×LC method (linearity ranging from 0.9990 to 0.9994, intraday and interday precision from 0.40 to 10.57% and, accuracy from 81.89 to 108.98%). Significant differences were observed between ripe and unripe guabiroba fruits, especially for the compounds geraldone and methyl galangin isomer. Guabiroba fruits showed significant antidiabetic and antioxidant properties and may be potentially adopted as part of dietary strategies in the management of early stages of type 2 diabetes and associated complications. This article is protected by copyright. All rights reserved.

Keywords: Antidiabetic activity; Antioxidant activity; LC×LC; Polyphenols; Simplex-centroid design.

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