Abstract
We determined antimicrobial efficacy of commercial chlorine dioxide(ClO₂) sanitizers and HCl-based ClO₂ solution against total aerobic mesophiles on dried chili peppers. Three types of commercial sanitizers (Cloee F Plus, Ildong Cleaner, and Inopus ODX 7) were tested to inactivate microorganisms on whole or cut dried chili pepper at 200 ppm for 10 min. Regardless of types of chili peppers, sanitizer Inopus had the greatest antimicrobial effectiveness against microorganisms. All sanitizers tested did not show any residual effect after 30 min of hot air drying. Hydrochloric acid-based chlorine dioxide solution was also prepared and tested for its antimicrobial activity followed by hot air drying. Chili peppers were also repeatedly treated with HCl-based ClO₂ solution at 100 ppm or 200 ppm for 2 min. The ClO₂ solution followed by hot air drying significantly reduced the microbial populations on whole chili peppers, whereas there was no significant difference in antimicrobial activities of the treatment as affected by its concentration. In addition, the same concentration of chlorine dioxide inactivated more rapidly microorganisms on chili peppers on which calyx has been removed, compared to those with calyx.
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