Efficacy of ozone mixed with carbon dioxide on the mortality of Rhyzopertha dominica (F.) inside food packaging

Abstract : 

The lesser grain borer, Rhyzopertha dominica (F.), is a primary beetle pest of stored grain in many regions of the world. Fumigation as a pest control methodplaysakeyroleincontrolandmanagement of infestationstored commoditiesworldwide. This study was conducted to control the beetles in food packaging under modified atmosphere storage. Experiments were designed on three factors, including foodstuff (3 treatments), wrapper (4 treatments) and the concentration of ozone mixed with 40% carbon dioxide (3 levels). The results showed that the behavior of wheat is different from wheat flour and rolled oats foodstuffs. Accordingly, while the most mortality beetles in wheat (alive) was observed in the BOPP 40μm film (biaxially orientedpolypropylene) with low permeability, the most mortality in wheat flour and rolled oats (non-alive) occurred in Non-woven PP (polypropylene) wrapper with high permeability. Mortality of beetleslocated in all of foodstuffs showed a significant decrease in 40% CO2+150 ppm O3, 40% CO2+100 ppm O3 and 40% CO2+50 ppm O3 in the level of 0.05 respectively. Arrangement of morality mean in the foodstuffs was significant as wheat four < rolled oats< wheat in 0.05 level


Keyword : 

Stored grain insect, Modified atmosphere, Spunbond, Perforated woven polypropylene


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