Effects of electron-beam irradiation on the control of bacterium and insect pests in warehoused tobacco and on tobacco quality
The effects of 200 keV and 10 MeV electron-irradiation accelerators on the eradication of lasioderma serricorne and bacteria in tobacco and on the quality of tobacco leaf are investigated.By controlling the parameters of electron-beam irradiation,all lasioderma serricorne and bacteria inside tobacco can be eradicated efficiently and rapidly.The irradiated tobacco exhibits good retention based on a validation experiment,and no colonies are detected within 38 d.The irradiation has no significant effects on the basic physical and chemical indexes or the organic-acid and mineral-element contents of tobacco.Excessive energy levels reduce the volatilization loss of neophytadiene in tobacco from 589.91 to 418.64 μg/g,which indicates that the aroma quality of the tobacco deteriorates to a certain extent.Fluka simulation results show that a 3 MeV electron beam is sufficient to penetrate a full box of stored tobacco at existing tobacco stacking densities.
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