Antioxidant and antibacterial compounds from feijoa leaf extracts obtained by pressurized liquid extraction and supercritical fluid extraction.

Food Chemistry
Pedro Henrique SantosHaiko Hense

Abstract

This work investigated the efficiency of pressurized liquid extraction (PLE) and supercritical fluid extraction with cosolvent (SFE) in obtaining feijoa leaf extracts with high antioxidant and antibacterial activities. PLE was performed in customized equipment with environmentally friendly solvents, at 40/80 °C, in dynamic and static mode, and SFE was carried out for 210 min at 30 MPa, 55 °C and 15% ethanol-water as cosolvent. PLE extract (80 °C/ethanol-water/dynamic) provided the highest yield, total phenolic content, and antioxidant activities, but it was not effective as antibacterial agent. In contrast, SFE extract exhibited effectiveness against S. aureus, E. coli, and S. typhimurium, with minimum inhibitory concentration values from 14,211 to 3,553 µg.mL-1. Finally, gallic acid, catechin and isoquercetin were the major phenolics identified by liquid chromatography. Our findings revealed that feijoa leaf extracts by PLE and SFE have remarkable bioactivity, presenting a great potential to be used as natural food additives.

References

Jan 1, 1997·International Journal of Antimicrobial Agents·A BasileR Castaldo-Cobianchi
Aug 17, 2011·Analytica Chimica Acta·Arwa Mustafa, Charlotta Turner
Sep 29, 2012·Plant Science : an International Journal of Experimental Plant Biology·Giovanni AgatiMassimiliano Tattini
Jan 22, 2013·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Laura Tomás-MenorVicente Micol
Nov 22, 2014·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ningjian Liang, David D Kitts
Jul 1, 2017·Journal of Medicinal Food·Santi M MandalOctavio L Franco
Jan 4, 2018·Bioscience, Biotechnology, and Biochemistry·Hiroe AoyamaTsutomu Hatano
Apr 21, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jurga Bernatoniene, Dalia Marija Kopustinskiene
May 31, 2019·Biomedicine & Pharmacotherapy = Biomédecine & Pharmacothérapie·Abdur RaufHafiz Ansar Rasul Suleria
Jun 23, 2019·European Journal of Medicinal Chemistry·Kumari NehaM Shahar Yar
Sep 14, 2019·Biotechnology Reports·Naresh Kumar, Nidhi Goel
Mar 21, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Andrzej CendrowskiStanisław Kalisz

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