Antimicrobial effect of insect chitosan on Salmonella Typhimurium, Escherichia coli O157:H7 and Listeria monocytogenes survival
| Autor: | Dolores Rodrigo, Diana Ibañez-Peinado, María Úbeda-Manzanaro, Antonio Martínez |
|---|---|
| Přispěvatelé: | Ministerio de Ciencia, Innovación y Universidades (España), European Commission |
| Rok vydání: | 2020 |
| Předmět: |
Bacterial Diseases
Salmonella typhimurium Salmonella Pathology and Laboratory Medicine medicine.disease_cause Penaeus monodon Chitosan chemistry.chemical_compound Medical Conditions Medicine and Health Sciences Food science Tenebrio Acetic Acid Multidisciplinary biology Eukaryota Antimicrobial Bacterial Pathogens Crustaceans Anti-Bacterial Agents Insects Chemistry Infectious Diseases Experimental Organism Systems Medical Microbiology Physical Sciences Medicine Prokaryotic Models Pathogens Research Article Escherichia Arthropoda Science macromolecular substances Acetic acid Research and Analysis Methods Microbiology Model Organisms Enterobacteriaceae Listeria monocytogenes Escherichia coli medicine Animals Microbial Pathogens Bacteria Gut Bacteria technology industry and agriculture Chemical Compounds Organisms Biology and Life Sciences Listeria Monocytogenes biology.organism_classification Invertebrates carbohydrates (lipids) chemistry Animal Studies Listeria Acids Zoology Entomology |
| Zdroj: | PLoS ONE Digital.CSIC. Repositorio Institucional del CSIC instname PLoS ONE, Vol 15, Iss 12, p e0244153 (2020) |
| ISSN: | 1932-6203 |
| Popis: | The antimicrobial capability of chitosan from Tenebrio molitor as compared with chitosan from crustacean (Penaeus monodon) on different pathogenic microorganisms of concern in food safety was studied. The antimicrobial effect was tested at pH 5 and pH 6.2 and at two different initial concentrations (103 or 106 CFU/mL). Results indicated that chitosan from both sources have antimicrobial activity, although the effect depended on the microorganism considered (Salmonella Typhimurium, Listeria monocytogenes and Escherichia coli O157:H7). Our results indicated that Salmonella was the most resistant bacteria, and that chitosan from insect was less active than chitosan from crustacean, especially against Salmonella. Another important factor on antimicrobial activity was the pH of the sample. When chitosan was added to a solution with a pH of 6.2 it was more active against Listeria and Escherichia coli, than at pH 5.00. Besides, the effect of chitosan appears to decrease with the incubation time, since some increases in counts were observed on E. coli and Salmonella after the 24 and 49 hours of incubation. The authors are grateful to the Spanish Ministry of Science for funding through project AGL2017-86840-C2-2-R, and to FEDER funds from EU. The funders had no role in study design, data collection and analysis decision to publish, or preparation of the manuscript. |
| Databáze: | OpenAIRE |
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