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Antimicrobial and antioxidant activity of crude onion (Allium cepa, L.) extracts
Abstract
Summary: Antioxidant and antimicrobial activity of the ethyl acetate and water subfractions of methanolic extracts of three Spanish onion varieties were assayed. Flavonoids were mainly present in ethyl acetate subfraction being 34.92 ± 0.75, 7.95 ± 0.16, 0.38 ± 0.01 μmol of rutin eq. g−1 D.W. and its antioxidant capacity was 74.86 ± 1.77, 24.59 ± 0.67, 4.55 ± 0.44 μmol Trolox g−1 D.W. of Grano de Oro, Fuentes de Ebro and Calçot de Valls varieties, respectively. The antimicrobial activity of flavonol standards and onion extracts was evaluated against some food spoiler microorganisms. Quercetin and kaempferol were inhibitory against gram positive bacteria such as Bacillus cereus, Staphylococcus aureus, Microcroccus luteus and Listeria monocytogenes. Gram negative bacteria Escherichia coli and Pseudomonas aeruginosa were less sensible to the antimicrobial effect of both flavonol standards and Candida albicans was totally resistant. Among the onion extracts tested only ethyl acetate subfraction showed antimicrobial inhibition.
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Cites
Rapid Determination of Polyphenols and Vitamin C in Plant-Derived Products
Georgé, S., Brat, P., Alter, P., & Amiot, M. J. (2005) · Journal of Agricultural and Food Chemistry · doi:10.1021/jf048396b · Cited by 804
Cited by
Khursheed, A., Rather, M. A., Jain, V., Wani, A. R., Rasool, S., Nazir, R., Malik, N. A., & Majid, S. A. (2022) · Microbial Pathogenesis · doi:10.1016/j.micpath.2022.105854 · Cited by 322
Gatto, M. A., Ippolito, A., Linsalata, V., Cascarano, N. A., Nigro, F., Vanadia, S., & Di Venere, D. (2011) · Postharvest Biology and Technology · doi:10.1016/j.postharvbio.2011.02.005 · Cited by 264
Metadata
- Authors
- Santas, J., Almajano, M. P., & Carbó, R.
- Venue
- International Journal of Food Science & Technology
- Publisher
- Oxford University Press (OUP)
- Published
- 2010-01-25
- Volume
- 45
- Issue
- 2
- Pages
- 403-409
- ISSN
- 0950-5423 (ISSN-L)
- 1365-2621
- OpenAlex
- W2140734107
- Cited by
- 191
- References
- 1
- FWCI
- 8.73
- Type
- journal article
- Language
- en
- Open access
- closed
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- Santas, J., Almajano, M. P., & Carbó, R. (2010). Antimicrobial and antioxidant activity of crude onion (Allium cepa, L.) extracts. International Journal of Food Science & Technology. https://doi.org/10.1111/j.1365-2621.2009.02169.x
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