Chloroxyanion Residues in Cantaloupe and Tomatoes after Chlorine Dioxide Gas Sanitation.
Chlorine dioxide gas is effective at cleansing fruits and vegetables of bacterial pathogens and(or) rot organisms, but little data are available on chemical residues remaining subsequent to chlorine gas treatment. Therefore, studies were conducted to quantify chlorate and perchlorate residues after tomato and cantaloupe treatment with chlorine dioxide gas. Treatments delivered 50 mg of chlorine dioxide gas per kg of tomato (2-h treatment) and 100 mg of gas per kg of cantaloupe (6-h treatment) in sealed, darkened containers. Chlorate residues in tomato and cantaloupe edible flesh homogenates were less than the LC-MS/MS limit of quantitation (60 and 30 ng/g respectively), but were 1319 ± 247 ng/g in rind + edible flesh of cantaloupe. Perchlorate residues in all fractions of chlorine dioxide-treated tomatoes and cantaloupe were not different (P > 0.05) than perchlorate residues in similar fractions of untreated tomatoes and cantaloupe. Data from this study suggest that chlorine dioxide sanitation of edible vegetables and melons can be conducted without the formation of unwanted residues in edible fractions.
United States Department of Agriculture , Agricultural Research Service, Biosciences Research Laboratory, 1605 Albrecht Boulevard, Fargo, North Dakota 58102-2765, United States.
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Smith
ICA Tri-Nova Corporation, LLC. , 24 Woodland Trail, Newnan, Georgia 30263, United States.
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Ernst
United States Department of Agriculture , Agricultural Research Service, Biosciences Research Laboratory, 1605 Albrecht Boulevard, Fargo, North Dakota 58102-2765, United States.
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Herges
D017606:Chlorine Compounds / Q000032:analysis*; D028463:Cucumis melo / Q000737:chemistry*; D004202:Disinfectants / Q000032:analysis*; D004203:Disinfection / Q000295:instrumentation* / Q000379:methods; D004350:Drug Residues / Q000032:analysis*; D005506:Food Contamination / Q000032:analysis; D005638:Fruit / Q000737:chemistry; D018551:Solanum lycopersicum / Q000737:chemistry*; D010087:Oxides / Q000032:analysis*; D053719:Tandem Mass Spectrometry
D017606:Chlorine Compounds; D004202:Disinfectants; D010087:Oxides; C025109:chlorine dioxide
chlorate; chlorine dioxide; chlorite; food safety; perchlorate; residue