Abstract
Recently, a major interest in searching for phytochemicals with nutritional and pharmaceutical purposes has arisen. In this regard, it is known that polyphenols present antioxidant properties as well as an inhibitory effect against some kinds of microorganisms. The aimof this study was to obtain aqueous-ethanolic extracts frompeels of avocado, cocoa bean, coconut and cactus pear by ultrasound-assisted extraction. The extracts were characterized in terms of phenolics (Folin-Ciocalteu reagent), antioxidant potential (ferric reducing/antioxidant power assay), radical-scavenging ability (2,2-diphenyl-2-picrylhydrazyl free radical assay), and antimicrobial activity against Staphylococcus aureus, Shigella dysenteriae and Candida albicans (disk diffusion test). The results revealed that the avocado peel extract had the highest phenol content (36.5 mg EAG g-1 dry weight), the highest antioxidant activity (141.2 mME Trolox g-1 dry weight) and the lowest IC50 value (59 ppm). Furthermore, avocado and coconut peels demonstrated an inhibitory effect against the tested microorganisms.
Translated title of the contribution | Fruit peels as sources of bioactive compounds with antioxidant and antimicrobial properties |
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Original language | English |
Pages (from-to) | 360-371 |
Number of pages | 12 |
Journal | Revista de la Facultad de Ciencias Agrarias |
Volume | 52 |
Issue number | 1 |
State | Published - 1 Jan 2020 |
Externally published | Yes |
Keywords
- Antimicrobial activity
- Antioxidant activity
- Fruit peel
- Phenolic compound