Liu, Y, Benohoud, M, Galani Yamdeu, JH orcid.org/0000-0003-4841-7414 et al. (2 more authors) (2021) Green extraction of polyphenols from citrus peel by-products and their antifungal activity against Aspergillus flavus. Food Chemistry: X, 12. 100144. 100144-. ISSN 2590-1575
Abstract
Aspergillus flavus is a pathogenic fungus associated with food safety issues worldwide. This study investigated the antifungal activity of citrus peel extracts prepared using food-grade solvents (hot water or ethanol). Mandarin (Citrus reticulata) peel ethanol extracts inhibited the mycelial growth of A. flavus (39.60%) more effectively than those of orange (32.31%) and lemon (13.51%) after 7 days of incubation. The growth of A. flavus could be completely inhibited by mandarin extracts at 300–400 mg mL−1, depending on the extraction solvent. Solid-phase extraction (SPE) separated the polyphenol-rich fractions, which showed up to 40% higher antifungal activity than crude extracts. Twelve polyphenols (2 phenolic acids and 10 flavonoids) were identified by HPLC-DAD, narirutin and hesperidin were the most abundant. In conclusion, citrus peels are promising bioresources of antifungal agents with potential applications in food and other industries.
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Copyright, Publisher and Additional Information: | © 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC-BY-NC-ND license | ||||||
Keywords: | Antifungal activity; Citrus sp.; Aspergillus flavus; Polyphenols; Solid Phase Extraction | ||||||
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Institution: | The University of Leeds | ||||||
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Food Science and Nutrition (Leeds) > FSN Chemistry and Biochemistry (Leeds) The University of Leeds > Faculty of Environment (Leeds) > School of Food Science and Nutrition (Leeds) > FSN Nutrition and Public Health (Leeds) |
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Depositing User: | Symplectic Publications | ||||||
Date Deposited: | 23 Nov 2021 15:48 | ||||||
Last Modified: | 23 Nov 2021 15:48 | ||||||
Status: | Published | ||||||
Publisher: | Elsevier | ||||||
Identification Number: | https://doi.org/10.1016/j.fochx.2021.100144 | ||||||
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