Evaluation of biocontrol capacity of Pseudomonas graminis CPA-7 against foodborne pathogens on fresh-cut pear and its effect on fruit volatile compounds
Visualitza/Obre
Autor/a
Iglesias, María Belén
López, María Luisa
Echeverría, Gemma
Viñas, Inmaculada
Zudaire, Lorena
Data de publicació
2018-04-27ISSN
0740-0020
Resum
The application of microorganisms to control the growth of foodborne pathogens is an alternative to the use of chemical additives. In this work, Pseudomonas graminis CPA-7 was tested as a biocontrol agent against Salmonella enterica and Listeria monocytogenes on fresh-cut pear under conditions that simulate its commercial application at 5 ± 1 °C (under a modified atmosphere and antioxidant solution). The quality of the fresh-cut fruit, including the ethanol and acetaldehyde contents and the volatile profile, was determined. After the storage period, the L. monocytogenes population was reduced by 1-log unit by the presence of CPA-7; however, CPA-7 was not found to have antagonistic activity against S. enterica. The fruit quality (total soluble solids content and titratable acidity) was not negatively affected by CPA-7. The ethanol and acetaldehyde contents increased during the shelf-life of the fruit regardless of the presence of CPA-7. Some volatile compounds were key factors for discriminating samples from the two groups (the control group and the group that was inoculated with CPA-7). Some components are common in the volatile profile of pear (methyl acetate, 3-methylbutyl acetate, 1-butanol, 1-hexanol, and hexanal), and thus increases in their contents could enhance consumers flavour perception.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Matèries (CDU)
633 - Cultius i produccions
Pàgines
38
Publicat per
Elsevier
Publicat a
Food Microbiology
Citació
Iglesias, M., López, M., Echeverría, G., Viñas, I., Zudaire, L., & Abadias, M. (2018). Evaluation of biocontrol capacity of Pseudomonas graminis CPA-7 against foodborne pathogens on fresh-cut pear and its effect on fruit volatile compounds. Food Microbiology, 76, 226-236. doi:10.1016/j.fm.2018.04.007
Número de l'acord de la subvenció
MICINN-FEDER/AGL-2012/AGL-2012-38671/ES/EFECTO DEL MANEJO POSCOSECHA EN LA CALIDAD MICROBIOLOGICA, NUTRICIONAL Y SENSORIAL DE PERA "CONFERENCE" ENTERA Y MINIMAMENTE PROCESADA/
Programa
Postcollita
Aquest element apareix en la col·lecció o col·leccions següent(s)
- ARTICLES CIENTÍFICS [2850]
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