Feb 13, 2012, 5:24 PM
Post #34 of 43
**Since I no longer have access to a University library (living in Mexico), here is a list of recent literature references for using peroxide on produce:
Re: [YucaLandia] Cities with potable water?
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Many studies have demonstrated the efficacies of dilute H2O2 and
peroxyacetic acid in sanitizing fresh produce including mushrooms (Sapers, Kamp,
Pilizota, & Miller, 2001), apples (Sapers, Miller, Jantschke, & Mattrazzo, 2000),
melons (Ukuku, Sapers, & Pilizota, 2001), tomatoes (Sapers & Jones, 2006;
Venkitanarayanan, Lin, Bailey, & Doyle, 2002) and leafy greens (Lin, Moon, Doyle,
& McWatters, 2002; McWatters, Doyle, Lin, Chinnan, & Walker, 2002a; Wei,
Hammes, & Wolf, 2005).
One of the main advantages of using H2O2 as a disinfecting
agent is that it produces no residue as it is decomposed into water and oxygen by the
enzyme catalase which is naturally found in plants (Ölmez & Kretzschmar, 2009).
Although some studies also showed that treatment of H2O2 could cause browning and
adverse impacts on some types of fresh produce (Sapers et al., 2001), other reports
indicated that H2O2 treatment improved sensory quality and shelf life of some fresh
produce (Lin et al., 2002; McWatters, Doyle, Lin, Chinnan, & Walker, 2002b; G. M.
Sapers, Miller, Pilizota, & Mattrazzo, 2001). " http://dspace.udel.edu:8080/...hesis.pdf?sequence=1
A Journal of Food Science article http://ddr.nal.usda.gov/...22/1/IND43889574.pdf found that it took 5% (strong undiluted) peroxide AND 60ºC heating to kill Escherichia coli NRRL B-766 or a Salmonella cocktail...
Based on this study of peroxide not working on an easy to clean smooth skinned vegetable (tomatoes), Hydrogen Peroxide by itself does not have a good proven record of killing common microbial pathogens , and both peroxide and Microdyne (colloidal silver) have actually been shown to NOT work.
Does the inconvenience of double treatment systems that often don't work, or heating the fruits and veg to 140ºF seem worthwhile? ... especially since 140ºF temperature ironically kills microbes with just water and 3 minutes of heating?
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(This post was edited by YucaLandia on Feb 13, 2012, 5:39 PM)