摘要:Since recently, the food industry has been faced with serious problems regarding pest-infested food commodities and deregistration of many chemical biocides by the EU Biocide Directive. These conditions have created an urgent need for a physical method of protecting food against pests. Therefore, a vacuum packing machine was used for laboratory testing of the effectiveness of vacuum packaging on the mortality of the red flour beetle ( Tribolium castaneum ) and granary weevil ( Sitophilus granarius ) at different temperatures and exposure times. There were significant differences in the susceptibility to low pressure (vacuum) between the adult insects of both tested species: T. castaneum was approximately 10 times more susceptible to low pressure than S. granarius . A higher temperature significantly shortens the vacuum exposure time necessary to reach 100% mortality in the tested beetles under a constant low-pressure value (1 kPa). The lethal times (LT99) foradult T. castaneum were 15.1 h at 25°C and 30.8 h at 15°C. The lethal times (LT99) for adult S. granarius were 160.1 hours at 25°C and 274 h at 15°C.
关键词:food protection; food safety; red flour beetle; granary weevil; non chemical control; temperature influence; vacuum packing food