Antimicrobial activity of hydroalcoholic extracts of Moringa oleifera against bacterial pathogens
Agricultura y Silvicultura
Authors
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Lirialis Garcia Mesa
Centro de Investigaciones Pesqueras (CIP). Playa, La Habana, Cuba.
https://orcid.org/0000-0002-2096-7871
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Maylee Pozo Escobar
Centro de Investigaciones Pesqueras (CIP). Playa, La Habana, Cuba.
https://orcid.org/0000-0003-4807-4191
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Raquel Silveira Coffigny
Centro de Investigaciones Pesqueras (CIP). Playa, La Habana, Cuba.
https://orcid.org/0000-0002-0753-959X
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Aniley Fernández Valle
Centro de Investigaciones Pesqueras (CIP). Playa, La Habana, Cuba.
https://orcid.org/0009-0006-6777-3245
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Ernesto Almora Hernández
Centro de Investigación de Plantas Proteicas y Productos Bionaturales (CIPB). Playa, La Habana, Cuba.
https://orcid.org/0000-0002-1431-7004
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Vivian Lago Abascal
Centro de Investigación de Plantas Proteicas y Productos Bionaturales (CIPB). Playa, La Habana, Cuba.
https://orcid.org/0000-0002-3229-1872
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Efraín Rodríguez Jiménez
Centro de Investigación de Plantas Proteicas y Productos Bionaturales (CIPB). Playa, La Habana, Cuba.
https://orcid.org/0000-0002-8315-4413
DOI:
https://doi.org/10.33936/la_tecnica.v16i2.8316Keywords:
Moringa oleifera, aquaculture, plant extracts, antimicrobial activity, bacterial pathogens.Abstract
Bacterial infections in fish are a problem that has increased with the use of new production systems. Several plants exhibit antimicrobial activity against fish pathogens. This study evaluated the antimicrobial activity of hydroalcoholic extracts of Moringa oleifera (apical part, leaflets, seed coat, and seed cake) against 12 bacterial pathogens isolated from fish and shrimp using the agar diffusion method. Sixteen extracts were prepared by varying the ethanol concentration (30 and 70%) and the solute/solvent ratio (1/10 and 1/30); their phytochemical profiles were previously characterized. Leaf extracts (70% ethanol, 1/10 ratio) showed the greatest inhibitory activity, with halos of up to 17 mm against Staphylococcus aureus ATCC-00034 and 15 mm against Vibrio alginolyticus, inhibiting 60% of the isolates tested. In contrast, the apical extracts showed minimal efficacy (active only against Streptococcus sp. ATCC-15185), despite their high polyphenol content (512.48 mg EAG·g-1). The hull and seed bran were primarily effective against V. harveyi. The results demonstrate that the M. oleifera plant exhibits antimicrobial activity against a wide range of bacterial genera isolated from fish. However, sensitivity results vary depending on the bacterial species tested, the plant part, the solvent concentration, and the solute/solvent ratio.
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References
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Copyright (c) 2026 Lirialis Garcia Mesa, Maylee Pozo Escobar, Raquel Silveira Coffigny , Aniley Fernández Valle , Ernesto Almora Hernández, Vivian Lago Abascal, Efraín Rodríguez Jiménez
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
