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- Title
Validation of Hydrogen Cyanide Fumigation in Flourmills to Control the Confused Flour Beetle.
- Authors
AULICKY, Radek; STEJSKAL, Vaclav; DLOUHY, Milan; LISKOVA, Jana
- Abstract
In the milling industry, the Tribolium confusum is hard to exterminate pest. We measured the concentration time product (Ct-P) achieved during the hydrogen cyanide (HCN) fumigation and examined whether the Ct-P levels in the explored Czech pilot mill were sufficient to control the field strain of T. confusum. Using an originally constructed, gastight fumigation chamber, it was estimated that the Ct-P required for the complete killing of the field strain of T. confusum was 4× higher (4.35 g/h/m3) than the levels required to kill the laboratory strain (1.25 g/h/m3). The Ct-P levels (ranging from 79 g/h/m3 to 100 g/h/m3) reached during the mill fumigations with HCN were less than half of the labelled HCN rate (240 g/h/m3). Nevertheless, the current HCN dosage is still sufficient since the Ct-P reached during the mill fumigations was at least 99× higher than that required for the exterminating to the lab strain and 18× higher than that required for the field strain extermination. These results were confirmed in mill validation testing, where 100% mortality of T. confusum adults was achieved.
- Subjects
CONFUSED flour beetle; HYDROCYANIC acid; FUMIGATION; TRIBOLIUM; FLOUR industry; FOOD safety
- Publication
Czech Journal of Food Sciences, 2015, Vol 33, Issue 2, p174
- ISSN
1212-1800
- Publication type
Article
- DOI
10.17221/303/2014-CJFS