First chemical profile analysis of acacia pods

Pedro, Soraia; Fernandes, Tiago A.; Luís, Ângelo; Antunes, Alexandra M.M.; Gonçalves, José Carlos; Gominho, Jorge; Gallardo, Eugenia; Anjos, O.

http://hdl.handle.net/10400.11/9006

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Authors

Pedro, Soraia

Fernandes, Tiago A.

Luís, Ângelo

Antunes, Alexandra M.M.

Gonçalves, José Carlos

Gominho, Jorge

Gallardo, Eugenia

Anjos, O.

Abstract(s)

This study intended to evaluate the potential industrial applications of various Acacia species (Acacia melanoxylon, Acacia longifolia, Acacia cyclops, Acacia retinodes, Acacia pycnantha, Acacia mearnsii, and Acacia dealbata) by examining their chemical composition, antioxidant, and antimicrobial properties. Using high-resolution mass spectrometry, a comprehensive analysis successfully identified targeted compounds, including flavonoids (flavonols/flavones) and phenolic acids, such as 4-hydroxybenzoic acid, p-coumaric acid, and ellagic acid. Additionally, p-coumaric acid was specifically identified and quantified within the hydroxycinnamic aldehydes. This comprehensive characterization provides valuable insights into the chemical profiles of the studied species. Among the studied species, A. pycnantha exhibited a higher concentration of total phenolic compounds, including catechin, myricetin, quercetin, and coniferaldehyde. Furthermore, A. pycnantha displayed notable antibacterial activity against K. pneumoniae, E. coli, S. Typhimurium, and B. cereus. The identified compounds in Acacia pods and their shown antibacterial activities exhibit promising potential for future applications. Moreover, vibrational spectroscopy was a reliable method for distinguishing between species. These significant findings enhance our understanding of Acacia species and their potential for various industrial applications.

Description

This work was supported by project PCIF/GVB/0145/2018 (Acacia4fireprev— https://www.acacia4fireprev.com/equipa 4 September 2023). Fundação para a Ciência e a Tecnologia (FCT), Portugal, for financial support through projectsUIDB/00239/2020 (CEF),UIDB/QUI/00100/2020 and UIDP/00100/2020 (to CQE), LA/P/0056/2020 (to IMS), UIDP/00709/2020 (CICS-UBI), project UIDB/00681/2020 (CERNAS-IPCB) funding is also gratefully acknowledged.