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Antimicrobial activity of lipids extracted from Hermetia illucens reared on different substrates.
Franco, Antonio; Scieuzo, Carmen; Salvia, Rosanna; Pucciarelli, Valentina; Borrelli, Luca; Addeo, Nicola Francesco; Bovera, Fulvia; Laginestra, Ambrogio; Schmitt, Eric; Falabella, Patrizia.
Afiliación
  • Franco A; Department of Sciences, University of Basilicata, Via Dell'Ateneo Lucano 10, 85100, Potenza, Italy.
  • Scieuzo C; Spinoff XFlies S.R.L, University of Basilicata, Via Dell'Ateneo Lucano 10, 85100, Potenza, Italy.
  • Salvia R; Department of Sciences, University of Basilicata, Via Dell'Ateneo Lucano 10, 85100, Potenza, Italy.
  • Pucciarelli V; Spinoff XFlies S.R.L, University of Basilicata, Via Dell'Ateneo Lucano 10, 85100, Potenza, Italy.
  • Borrelli L; Department of Sciences, University of Basilicata, Via Dell'Ateneo Lucano 10, 85100, Potenza, Italy. r.salvia@unibas.it.
  • Addeo NF; Spinoff XFlies S.R.L, University of Basilicata, Via Dell'Ateneo Lucano 10, 85100, Potenza, Italy. r.salvia@unibas.it.
  • Bovera F; Department of Sciences, University of Basilicata, Via Dell'Ateneo Lucano 10, 85100, Potenza, Italy.
  • Laginestra A; Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Via F. Delpino 1, 80137, Naples, Italy.
  • Schmitt E; Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Via F. Delpino 1, 80137, Naples, Italy.
  • Falabella P; Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Via F. Delpino 1, 80137, Naples, Italy.
Appl Microbiol Biotechnol ; 108(1): 167, 2024 Jan 23.
Article en En | MEDLINE | ID: mdl-38261012
ABSTRACT
As the problem of antimicrobial resistance is constantly increasing, there is a renewed interest in antimicrobial products derived from natural sources, particularly obtained from innovative and eco-friendly materials. Insect lipids, due to their fatty acid composition, can be classified as natural antimicrobial compounds. In order to assess the antibacterial efficacy of Hermetia illucens lipids, we extracted this component from the larval stage, fed on different substrates and we characterized it. Moreover, we analyzed the fatty acid composition of the feeding substrate, to determine if and how it could affect the antimicrobial activity of the lipid component. The antimicrobial activity was evaluated against Gram-positive Micrococcus flavus and Gram-negative bacteria Escherichia coli. Analyzing the fatty acid profiles of larval lipids that showed activity against the two bacterial strains, we detected significant differences for C40, C100, C161, C183 n3 (ALA), and C201. The strongest antimicrobial activity was verified against Micrococcus flavus by lipids extracted from larvae reared on strawberry, tangerine, and fresh manure substrates, with growth inhibition zones ranged from 1.38 to 1.51 mm, while only the rearing on manure showed the effect against Escherichia coli. Notably, the fatty acid profile of H. illucens seems to not be really influenced by the substrate fatty acid profile, except for C180 and C182 CIS n6 (LA). This implies that other factors, such as the rearing conditions, larval development stages, and other nutrients such as carbohydrates, affect the amount of fatty acids in insects. KEY POINTS • Feeding substrates influence larval lipids and fatty acids (FA) • Generally, there is no direct correlation between substrate FAs and the same larvae FAs • Specific FAs influence more the antimicrobial effect of BSF lipids.
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Texto completo: 1 Base de datos: MEDLINE Asunto principal: Dípteros / Estiércol / Micrococcus Límite: Animals Idioma: En Revista: Appl Microbiol Biotechnol Año: 2024 Tipo del documento: Article País de afiliación: Italia

Texto completo: 1 Base de datos: MEDLINE Asunto principal: Dípteros / Estiércol / Micrococcus Límite: Animals Idioma: En Revista: Appl Microbiol Biotechnol Año: 2024 Tipo del documento: Article País de afiliación: Italia