title: Combined effects of potassium sorbate, hot water and thiabendazole against green mould of citrus fruit and residue levels.
abstract: Postharvest treatments of potassium sorbate only controlled recently established infections of Penicillium digitatum on Femminello siracusano lemons but did not confer any persistent protection. The loss of efficacy of potassium sorbate to control green mould decay was related to its irregular deposition on the fruit surface, as revealed by environmental scanning electron microscopy of oranges, and to the brief persistence of potassium sorbate residues. When treatment was done at 53°C, the co-application of potassium sorbate with thiabendazole reduced thiabendazole residues in Moro and Sanguinello oranges, compared to thiabendazole treatment alone. However, treatment efficacy against two isolates of P. digitatum (thiabendazole-sensitive and thiabendazole-resistant) notably improved, indicating that potassium sorbate and hot water potentiated thiabendazole activity. Potassium sorbate residues remarkably decreased during fruit storage and were not affected by the co-application of thiabendazole.
authors.affiliation: Institute of Sciences of Food Production, National Research Council, Traversa La Crucca 3, Regione Baldinca, 07040 Li Punti, Sassari, Italy.
authors.forename: Salvatore
authors.initials: S
authors.lastname: D'Aquino
authors.forename: Angela
authors.initials: A
authors.lastname: Fadda
authors.forename: Antonio
authors.initials: A
authors.lastname: Barberis
authors.forename: Amedeo
authors.initials: A
authors.lastname: Palma
authors.forename: Alberto
authors.initials: A
authors.lastname: Angioni
authors.forename: Mario
authors.initials: M
authors.lastname: Schirra
mesh_terms: D002957:Citrus / Q000382:microbiology*; D005519:Food Preservation / Q000379:methods*; D005659:Fungicides, Industrial / Q000494:pharmacology*; D006358:Hot Temperature; D010407:Penicillium / Q000187:drug effects*; D010935:Plant Diseases / Q000382:microbiology*; D013011:Sorbic Acid / Q000494:pharmacology*; D013827:Thiabendazole / Q000494:pharmacology*; D014867:Water / Q000032:analysis
chemical_list: D005659:Fungicides, Industrial; D014867:Water; D013827:Thiabendazole; D013011:Sorbic Acid