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Effect of Carbon Dioxide (CO_2) Controlled Atmosphere on Superoxide Dismutase (SOD) Activity of Three storage pests in Chinese Medicinal Materials

引用

Plant Diseases and pests 2011年第4期2卷 43-45页

作者：李灿贵阳学院生物与环境工程系贵州贵阳550005

[ Objective ] The paper was to study the effect of controlled atmosphere stress of carbon dioxide （ CO2 ） on Superoxide dismutase （SOD） activity of in- sect, so as to analyze the biological mechanism of the action of controlled atmosphere stress on insect. [ Method] Using nitrotetrazolium blue chloride （NBT） light reduction method, SOD activity of drugstore beetle （ Stegobium panlceum ）, cigarette beetle （ Lasioderma serricorne） and coffee bean beetle （Araecerus fasciculatus） was studied, and the stress response of the enzyme under controlled atmosphere stress of CO2 was analyzed. [ Result ] SOD activity of drugstore beetle, cigarette beetle and coffee bean beetle exposed to controlled atmosphere stress of high concentrations of CO2 for 3 and 6 h had certain degree of increase, and the activity sig- nificantly increased from 2.011±0.954,2.664±0.218 and 1.458±0.718 to 3. 135±0. 105,3.050±0.673 and 2.975±0.229 U/（per pest · 30 min） after treat- ment for 6 h. [ Conclusion] Controlled atmosphere stress of high concentrations of CO2 had certain activation effect on SOD activity of storage pest in Chinese me- dicinal material within the context of sub-lethal events. The results could enrich the insecticidal mechanism of controlled atmosphere and theoretical system of analy- sis on insect resistance to controlled atmosphere.

关键词： Chinese medicinal materials storage pest Superoxide dismulase Enzyme activity CO2 controlled atmosphere China

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The Effect of Infestation by the Confused Flour Beetle （Tribolium Confusum Duv.） on Specifications of Wheat Flour

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Journal of Agricultural Science and Technology(A) 2012年第5期2卷 696-701页

作者： Osama Saeed Mohammad Wand Khalis Ali Abdul-minom Tais Al-Hulitan Department of Plant Protection College of Agriculture & Forestry University of Mosul Mosul 41002 lraq Department of Biology College of Education Scientific Departments University of Salahaddin Erbil Iraq Department of Laboratory General Company for Grain Processing~Nineveh Iraq

The objective of this research is to investigate the impact of infestation by the confused flour beetle Tribolium confusum on the specification of flour and its product. The results of this work showed that infestation by the confused flour beetle with 5 pairs of adult stage and its progeny within 3 months period may cause high deterioration and damaged of the flour specification. The people in lraq get their flour from some official and non-official mills which they produce not so good quality of this flour in addition to which it contains some times an infestation with the two species of the flour beetles T. castaneum and T. confusum, when people do not use this quantity as quickly as possible during this period of storage, the beetles will be increased in numbers and make the flour unacceptable for any kind of pastes or bread. The infestation by this beetle causes great pollution to the flour by the ecdysial of larvae and a bad smell that it leaves on the flour and all its products.

关键词： storage pest wheat flour specifications.

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