L. monocytogenes is a foodborne pathogen responsible for a serious disease with a high mortality rate, particularly in vulnerable consumers. Recently, the scientific community has shown increasing attention to the search for new natural molecules with antimicrobial activity, aimed at preventing the spread of foodborne diseases. Extremophilic microorganisms, typical of extreme temperature environments, are a valuable source of these molecules. The present work aimed to study the antibacterial activity of four pure compounds derived from a molecule, the pentadecanal, produced by the Antarctic bacterium Pseudoalteromonas haloplanktis, against two different pathotypes of L. monocytogenes. Growth assays were performed in 96-well polystyrene plates with serial dilutions of the tested compounds at different concentrations (0.6, 0.3, 0.15, 0.07 mg/mL). The plates were incubated at 37°C for 24 h, with a spectrophotometric reading at OD 600 nm. Preliminary results of this study showed that pentadecanal inhibits the growth of L. monocytogenes, with a MIC (Minimum Inhibitory Concentration) of 0.6 mg/mL. Acetal, carboxylic acid, and ester did not demonstrate antibacterial activity at the concentrations tested. These findings suggest the possibility of using pentadecanal as a natural antibacterial to improve safety standards along the food supply chain.

Antimicrobial activity evaluation of pure compounds obtained from Pseudoalteromonas haloplanktis against Listeria monocytogenes: Preliminary results / Venuti, Iolanda; Ceruso, Marina; D'Angelo, Caterina; Casillo, Angela; Pepe, Tiziana. - In: ITALIAN JOURNAL OF FOOD SAFETY. - ISSN 2239-7132. - 11:2(2022), p. 10320. [10.4081/ijfs.2022.10320]

Antimicrobial activity evaluation of pure compounds obtained from Pseudoalteromonas haloplanktis against Listeria monocytogenes: Preliminary results

Venuti, Iolanda
Primo
Writing – Original Draft Preparation
;
Ceruso, Marina
Secondo
Conceptualization
;
D'Angelo, Caterina
Methodology
;
Casillo, Angela
Methodology
;
Pepe, Tiziana
Ultimo
Conceptualization
2022

Abstract

L. monocytogenes is a foodborne pathogen responsible for a serious disease with a high mortality rate, particularly in vulnerable consumers. Recently, the scientific community has shown increasing attention to the search for new natural molecules with antimicrobial activity, aimed at preventing the spread of foodborne diseases. Extremophilic microorganisms, typical of extreme temperature environments, are a valuable source of these molecules. The present work aimed to study the antibacterial activity of four pure compounds derived from a molecule, the pentadecanal, produced by the Antarctic bacterium Pseudoalteromonas haloplanktis, against two different pathotypes of L. monocytogenes. Growth assays were performed in 96-well polystyrene plates with serial dilutions of the tested compounds at different concentrations (0.6, 0.3, 0.15, 0.07 mg/mL). The plates were incubated at 37°C for 24 h, with a spectrophotometric reading at OD 600 nm. Preliminary results of this study showed that pentadecanal inhibits the growth of L. monocytogenes, with a MIC (Minimum Inhibitory Concentration) of 0.6 mg/mL. Acetal, carboxylic acid, and ester did not demonstrate antibacterial activity at the concentrations tested. These findings suggest the possibility of using pentadecanal as a natural antibacterial to improve safety standards along the food supply chain.
2022
Antimicrobial activity evaluation of pure compounds obtained from Pseudoalteromonas haloplanktis against Listeria monocytogenes: Preliminary results / Venuti, Iolanda; Ceruso, Marina; D'Angelo, Caterina; Casillo, Angela; Pepe, Tiziana. - In: ITALIAN JOURNAL OF FOOD SAFETY. - ISSN 2239-7132. - 11:2(2022), p. 10320. [10.4081/ijfs.2022.10320]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/903825
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