Chemometric analysis and evaluation of antioxidant potential from organic extracts of Vismia spp.

Abstract

This work aimed to contribute to the chemotaxonomic study and determination of antioxidant potential of species of the genus Vismia, which until now has not had any detailed studies in this area. Thus, the fruits of the species, V. cayennensis, V. guianensis and V. aff. guianensis were collected in terra firme forest around Itacoatiara-AM. Organic extracts from Vismia spp. were obtained with solvents in increasing order of polarity and submitted to chemical analysis by mass spectrometry with electrospray ionization (ESI-MS) for the chemometric and biological study, regarding the antioxidant potential against the DPPH radical and the total phenolic content. From the chemometric analysis it was possible to observe the chemical similarity between the samples of hexane extract (EH-VG) and dichloromethane (ED-VG) of the species V. guianensis, and hexane (EH-VX), dichloromethane (ED-VX), ethyl acetate (EA-VX) and methanolic acetate (EM-VX) from the species V. aff. guianensis. As for the antioxidant test, the methanol extract (EMVX) stood out for having a high content of total phenolics (1592.6 ± 3.8 μM ET) compared to the other extracts.