Abstract
The main objective of this study is to compare the extraction efficiency, phenolic composition and antioxidant activity of fallen red leaves of the tropical almond (Terminalia catappa) using two extraction methods. The leaf was extracted under different conditions: soaking (12 and 24Â h) and pulse electric fields (0.5 and 0.75Â kV/cm). The results demonstrated that the highest total phenolic content (TPC) and higher antioxidant activity were related to the 50% concentration of red leaf extract. The evaluation of the two extraction methods revealed that the extract of red leaf obtained via PEF with 0.75Â kV/cm field strength had the highest TPC and antioxidant activity (DPPH). Finally, red leaf phenolic compounds were identified and reported by HPLC.
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Moghaddam, T.N., Elhamirad, A.H., Saeidi Asl, M.R. et al. Pulsed electric field-assisted extraction of phenolic antioxidants from tropical almond red leaves. Chem. Pap. 74, 3957–3961 (2020). https://doi.org/10.1007/s11696-020-01153-x
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DOI: https://doi.org/10.1007/s11696-020-01153-x