Artículo
Overcoming lemon postharvest molds caused by Penicillium spp. multiresistant isolates by the application of potassium sorbate in aqueous and wax treatments
Olmedo, Gabriela María
; Debes, Mario Alberto
; Sepúlveda, Milena; Ramallo, Jacqueline; Rapisarda, Viviana Andrea
; Cerioni, Luciana
; Volentini, Sabrina Inès
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Fecha de publicación:
05/2023
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Journal of Food Science
ISSN:
0022-1147
e-ISSN:
1750-3841
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Penicillium digitatum and Penicillium italicum are the main causal agents of postharvest diseases in lemon. Over the last decades, the appearance of isolates resistant to the main commercial fungicides has been considered one of the most serious problems for the citrus industry. In this work, potassium sorbate (KS) was evaluated as an alternative to chemical fungicides to control postharvest diseases caused by Penicillium isolates resistant to imazalil, thiabendazol, and pyrimethanil. In vitro assays showed that 1% KS inhibited conidia germination and mycelial growth of sensitive and resistant P. digitatum and P. italicum isolates, being this effect stronger at pH 5 than at pH 9. In curative treatments, the immersion of inoculated lemons in 1% KS aqueous solution for 30 s reduced green and blue molds incidences by around 80%. No wound protection effect was observed when wounded lemons were immersed in 3% salt solution before inoculation. Noteworthy, the inclusion of KS in a commercial wax coating effectively controlled green and blue molds, even in decays caused by fungicide resistance isolates. Together, results encourage the use of KS in lemon postharvest treatments to contribute to the management of resistant strains, which represent a major challenge in packinghouses worldwide.
Palabras clave:
citrus
,
food processing
,
fungide
,
GRAS salts
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Articulos(INECOA)
Articulos de INSTITUTO DE ECORREGIONES ANDINAS
Articulos de INSTITUTO DE ECORREGIONES ANDINAS
Articulos(INSIBIO)
Articulos de INST.SUP.DE INVEST.BIOLOGICAS
Articulos de INST.SUP.DE INVEST.BIOLOGICAS
Citación
Olmedo, Gabriela María; Debes, Mario Alberto; Sepúlveda, Milena; Ramallo, Jacqueline; Rapisarda, Viviana Andrea; et al.; Overcoming lemon postharvest molds caused by Penicillium spp. multiresistant isolates by the application of potassium sorbate in aqueous and wax treatments; Wiley Blackwell Publishing, Inc; Journal of Food Science; 88; 7; 5-2023; 2960-2967
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