Effect of “soft-electron” (low-energy electron) treatment on three stored-product insect pests

Imamura, Taro; Todoriki, Setsuko; Sota, Nahoko; Nakakita, Hiroshi; Ikenaga, Hiroshi; Hayashi, Toru

doi:10.1016/s0022-474x(02)00095-4

Cited by 40 publications

(18 citation statements)

References 9 publications

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“…Radiation-induced changes in DNA could be used as the basis for detecting irradiation treatment in foods and insects (Delincee, 1996, Imamura et al, 2004a. The comet assay is also used to observe DNA repair in irradiated cells (Ptacek et al, 2001, Trzeciak et al, 2008Olive & Durand, 2005).…”

Section: Discussionmentioning

confidence: 99%

Effect of microwave radiation on stored product pest Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) larvae

Pandır¹,

Güven²

2014

Turkish Journal of Entomology

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This study was designed to examine the effects of microwave radiation exposure on Ephestia kuehniella (Zeller) (Lepidoptera: Pyralidae) larvae. One to two day old larvae were exposed to microwave radiation at the powers of 70, 150, 300 and 600 W for different exposure times (1-50 s). Mortality ratio in larvae increased significantly with increasing exposure time at all powers of microwave radiation. Completele mortality was achieved at the power of 70 W and the longest exposure time (50 s) Superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and malondialdehyde (MDA) in the larvae tissue were evaluated.. SOD, CAT, GPx activities decreased and MDA level increased in the microwave radiation-treated larvae tissue compared to control group at 300 and 600 W (P < 0.05). There was no significant DNA damage detectable at 70, 150 and 300 W for 50 s when compared with control group. However, 50 s of 600 W powers was showed effects on tail length and tail intensity indicating DNA damage.These results indicate that high powers of microwave radiation treatments cause some effects on the stored product pest E. kuehniella larvae.

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Section: Discussionmentioning

confidence: 99%

Effect of microwave radiation on stored product pest Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) larvae

Pandır¹,

Güven²

2014

Turkish Journal of Entomology

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“…Similar results were observed by Mehta et al (1990) while working on the susceptibility of Tribolium confusum Jacquelin du Val adults to gamma radiation. Brower (1975) also reported a signiÞcant reduction in the adult life span of Tribolium destructor (Uyttenboogaat) at doses of 10-krad or more, and Imamura et al (2004) observed that soft-electron beams at an acceleration voltage of 170 kV effectively inactivated storage pests, including Tribolium castaneum (Herbst), Plodia interpunctella (Hü bner), and Callosobruchus chinensis (L.).…”

Section: Discussionmentioning

confidence: 98%

“…Stored-product insects differ markedly in their tolerance to gamma radiation and soft-electron beams (low-energy electrons) (Brower 1974, Hasan 1995, Hasan and Khan 1998, Imamura et al 2004. Tolerance varies considerably even within a single genus (Cornwell et al 1957;Hasan 1999Hasan , 2000.…”

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confidence: 99%

Soft-Electron Beam and Gamma-Radiation Sensitivity and DNA Damage in Phosphine-Resistant and -Susceptible Strains of <I>Rhyzopertha dominica</I>

Hasan¹,

Todoriki²,

Miyanoshita³

et al. 2006

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The soft-electron beam (low-energy electrons) and gamma-radiation sensitivities of phosphine-resistant (PHR) and -susceptible (PHS) strains of adults lesser grain borer Rhyzopertha dominica (F.) were studied, with particular reference to DNA damage assessed using single-cell electrophoresis (comet assay). Results showed that mortality in adult R. dominica varied significantly between both PHR and PHS strains. Adults of the PHR strain were found to be more tolerant toward soft-electron and gamma radiation than adults of the PHS strain. Studies on the longevity of strains showed that mean survival time and dose rate were highly correlated with both strains and treatments. Results also showed that adults of the PHR strain lived longer than adults of PHS strain for both treatments. Radiation sensitivity indices, however, decreased as radiation dose increased in both strains. Analysis of DNA damage, after 40- and 160-Gy gamma radiation, was carried out using cells obtained from both strains. Gamma-irradiated adults of both strains showed typical DNA fragmentation, compared with cells from nonirradiated adults, which showed more intact DNA. Investigations using the comet assay showed that tail length, moment, olive-tail moment, percentage of tail DNA, and percentage of DNA damage were all greater in the PHS strain compared with the PHR strain and the control insects. Results also showed that DNA damage remained at a constant level for up to 24 h after irradiation. The results have been discussed in relation to the observed strain differences in radiation sensitivity and resistance to phosphine.

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“…Temperature measurements with model insects revealed 1.4-1.7 times greater heating of insects than walnuts at 27 MHz but no preferential heating of insects was detected at 915 MHz (Wang et al 2003a). The effect of soft electron treatment was studied by Imamura et al (2004) on the life stages of T. castaneum, P. interpunctella, and Callosobruchus chinensis (L.). These studies indicated that adult stage is the most tolerant to radiation treatment compared with the early life stages because of limited cell division.…”

Section: Microbe Mortalitymentioning

confidence: 99%

Microwave technology for disinfestation of cereals and pulses: An overview

et al. 2012

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Contamination of stored grain with insects, insect fragments, fungi, and mycotoxins is a major concern of the grain industry. The stored-grain insects affect the grains not only quantitatively but also qualitatively. Disinfestation of grains can be achieved by physical, chemical and thermal methods. Microwaves may be an alternate to chemical methods of killing insects in grain as their application do not leave any undesirable residues and thus might be very effective for controlling insect infestation compared to other available methods. Microwave disinfestation can provide a continuous process to allow large quantities of products to pass in a shorter period of time. Microwave disinfestation is considered safe and competitive alternative method to fumigation as it avoids environmental pollution. The aim of this review is to examine how the use of microwave treatment benefits grain producers, handlers, and processors seeking to use non-chemical methods for preventing and controlling insect infestation and fungal growth during storage.

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Effect of “soft-electron” (low-energy electron) treatment on three stored-product insect pests

Cited by 40 publications

References 9 publications

Effect of microwave radiation on stored product pest Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) larvae

Effect of microwave radiation on stored product pest Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) larvae

Soft-Electron Beam and Gamma-Radiation Sensitivity and DNA Damage in Phosphine-Resistant and -Susceptible Strains of <I>Rhyzopertha dominica</I>

Microwave technology for disinfestation of cereals and pulses: An overview

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