Titre du document / Document title
Efficacy of gaseous chlorine dioxide as a sanitizer for killing Salmonella, yeasts, and molds on blueberries, strawberries, and raspberries
Auteur(s) / Author(s)
SY Kaye V. (1 2) ;
MCWATTERS Kay H. (2) ;
BEUCHAT Larry R. (1 2) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Center for Food Safety, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223-1797, ETATS-UNIS
(2) Department of Food Science and Technology, University of Georgia, 1109 Experiment Street, Griffin, Georgia 30223-1797, ETATS-UNIS
Résumé / Abstract
Gaseous chlorine dioxide (ClO
2) was tested for its effectiveness in killing Salmonella, yeasts, and molds on blueberries, strawberries, and red raspberries. An inoculum (100 μl, 6.0 to 6.8 log CFU/g of fruit) that contained five serotypes of Salmonella enterica was deposited on the skin, calyx tissue, or stem scar tissue of blueberries, skin or stem scar tissue of strawberries, and skin of red raspberries, dried for 2 h at 22°C, then held for 20 h at 4°C and 2 h at 22°C before treatment. Sachets that contained reactant chemicals were formulated to release gaseous ClO
2 at concentrations of 4.1, 6.2, and 8.0 mg/ liter of air within treatment times of 30, 60, and 120 min, respectively, at 23 ± 1°C. Lethality of ClO
2 to Salmonella, yeasts, and molds was measured when fruits were in an atmosphere that contained 75 to 90% relative humidity. Treatment with 8.0 mg/liter of ClO
2 significantly (a = 0.05) reduced the population of Salmonella on blueberries by 2.4 to 3.7 log CFU/g. Lethality was higher to cells in inoculum placed on the skin compared with the stem scar tissue. Populations of Salmonella on strawberries treated with 8.0 mg/liter of ClO
2 were reduced by 3.8 to 4.4 log CFU/g; a significant reduction of 1.5 log CFU/g of raspberries was achieved. Treatment with 4.1 to 8.0 mg/liter of ClO
2 caused reductions in populations of yeast and molds on blueberries, strawberries, and raspberries of 1.4 to 2.5, 1.4 to 4.2, and 2.6 to 3.0 log CFU/g, respectively. Treatment with 4.1 mg/liter of ClO
2 did not markedly affect the sensory quality of fruits stored for up to 10 days at 8°C. Results indicate that gaseous ClO
2 has promise as a sanitizer for small fruits.
Revue / Journal Title
Journal of food protection
ISSN
0362-028X
CODEN JFPRDR
Source / Source
2005, vol. 68, n
o6, pp. 1165-1175 [11 page(s) (article)] (46 ref.)
Langue / Language
Anglais
Editeur / Publisher
International Association for Food Protection, Des Moines, IA, ETATS-UNIS
(1977)
(Revue)
Mots-clés anglais / English Keywords
Berry ;
Fruit ;
Ericaceae ;
Spermatophyta ;
Angiospermae ;
Dicotyledones ;
Rosaceae ;
Bacteria ;
Enterobacteriaceae ;
Alteration ;
Raspberry ;
Strawberry ;
Blueberry ;
Vaccinium ;
Mould ;
Yeast ;
Fragaria ;
Salmonella ;
Disinfecting agent ;
Chlorine dioxide ;
Mots-clés français / French Keywords
Baie(fruit) ;
Fruit ;
Ericaceae ;
Spermatophyta ;
Angiospermae ;
Dicotyledones ;
Rosaceae ;
Bactérie ;
Enterobacteriaceae ;
Altération ;
Framboise ;
Fraise(fruit) ;
Myrtille ;
Vaccinium ;
Moisissure ;
Levure ;
Fragaria ;
Salmonella ;
Désinfectant ;
Chlore dioxyde ;
Mots-clés espagnols / Spanish Keywords
Baya(fruto) ;
Fruto ;
Ericaceae ;
Spermatophyta ;
Angiospermae ;
Dicotyledones ;
Rosaceae ;
Bacteria ;
Enterobacteriaceae ;
Alteración ;
Frambuesa ;
Fresa(fruta) ;
Mirtillo ;
Vaccinium ;
Moho ;
Levadura ;
Fragaria ;
Salmonella ;
Desinfectante ;
Cloro dióxido ;
Localisation / Location
INIST-CNRS, Cote INIST : 547, 35400012471232.0060
Nº notice refdoc (ud4) : 16830582
