• Title/Summary/Keyword: 훈증

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Effects of Fumigation Methods on Insect Disinfestation and Quality of Cut Rose and Lily (훈증방법이 살충력 및 절화장미·백합의 품질에 미치는 영향)

  • Son, Ki-Cheol;Byoun, Hye-Jin;Kim, Mi-Kyoung;Yun, Jae Gil;Chung, Soon-Kyung
    • Horticultural Science & Technology
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    • v.16 no.3
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    • pp.374-376
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    • 1998
  • Effects of traditional fumigation (methyl bromide; MB) and combined fumigation (methyl bromide/phosphide; $MB/PH_3$) on the disinfestation, and phytotoxicity and longevity of cut flowers (lily and rose) were investigated. Combined fumigation with low concentrations of $7/3g/m^3\;(MB/PH_3$) at $10^{\circ}C$ immediately after transportation from harvested place was found to be much more effective in disinfestation of aphid, mite, and thrips than fumigation with $MB\;48g/m^3$ only at $20^{\circ}C$ after simulated transportation for 2 days. Quality and longevity of cut flowers measured after fumigation were better in flowers treated by combined fumigation ($7/3g/m^3,\;MB/PH_3$) at $10^{\circ}C$ for 2.5-3 hrs, irrespective of pretreatment with pulsing solution immediately after transporation, even though phytotoxicity varied with cut flowers fumigated. On the other hand, fumigation with $MB\;48g/m^3$ only at $20^{\circ}C$ after simulated transportation for 2 days showed tendency of enhanced insect disinfestation, but caused phytotoxicity to both lily and rose, regardless of pretreatment and moreover, reduced the longevity of the cut flowers.

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Bactericidal Efficacy of Fumagari OPP®, Fumigant Against Escherichia coli and Salmonella typhimurium (훈증소독제, Fumagari OPP®의 Escherichia coli와 Salmonella typhimurium에 대한 살균효과)

  • Park, Eun-Kee;Kim, Yongpal;Yu, Eun-Ah;Yoo, Chang-Yeol;Choi, Hyunju;Kim, Suk;Lee, Hu-Jang
    • Journal of Food Hygiene and Safety
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    • v.28 no.3
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    • pp.234-240
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    • 2013
  • This test was performed to evaluate the bactericidal efficacy of Fumagari OPP$^{(R)}$, fumigation disinfectant, containing 20% ortho-phenylphenol against Escherichia coli (E. coli) and Salmonella typhimurium (S. typhimurium). In preliminary tests, both E. coli and S. typhimurium working culture suspension number (N value) was $4.0{\times}10^8$ CFU/mL. And all of the colony numbers on the carriers exposed the fumigant (n1, n2, n3) were higher than 0.5N1 (the number of bacterial test suspentions by pour plate method), 0.5N2 (the number of bacterial test suspentions by filter membrane method) and 0.5N1, respectively. In addition, the mean number of bacteria recovered on the control-carriers (T value) was $3.4{\times}10^6$ CFU/mL. In the bactericidal effect of the fumigant, the reduction number of S. typhimurium and E. coli (d value) was 5.26 and 5.64 logCFU/mL, respectively. According to the French standard for the fumigant, the d value for the effective bactericidal fumigant should be over than 5 logCFU/mL. With the results of this study, Fumagari OPP$^{(R)}$ has an effective bactericidal activity, then the fumigant can be applied to disinfect food materials and kitchen appliances contaminated with pathogenic bacteria.

Effect of soil fumigation treatment on the growth and the chemical composition of Korea ginseng, Panax ginseng C.A. Meyer (토양훈증제 처리가 2년생 인삼의 생육과 화학적 조성에 미치는 영향)

  • Ahn Y.J.;Kim Y.T.;Kim M.S.;Choi S.Y.
    • Korean journal of applied entomology
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    • v.20 no.1 s.46
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    • pp.31-36
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    • 1981
  • These experiments were conducted to investigate some effects of the soil fumigants Dow-fume MC-2, Cylone, TeloneC-17, and D-D on the growth response of the Korea ginseng(two-year old), Panax ginseng C.A. Meyer, and the chemical composition of the plants. Fumigant treatment increased growth of roots, stems, and leaves. The increase of root growth rates ranging from 2.8 to $58.7\%$ in fresh weight and 8.1 to $63.8\%$ in dry weight were observed in the 2-year old ginseng plants grown in the old ginseng soil treated with the different soil fumigants. The chemical analysis of inorganic elements such as N, P, K, Ca, Mg, Na, Fe, Mn, and Zn was made for the roots, stems and leaves of the 2-year old plants. The increases or decreases of content of the elements were observed, and their contents of each of the elements were changed with the kind of fumigants, part of the plants, and soil depth of the fumigant treatments, but their changing tendencies were not steady.

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Changes in Saponins Sugars and Amino Acids of White Ginseng during Storage Following Gamma Irradiation and Phosphine Fumigation (감마선과 Phosphine 처리된 백삼의 저장 중 사포닌, 당 및 아미노산 함량의 변화)

  • Kwon, Joong-Ho;Kim, Kyung-Tae;Kwon, Hoon;Park, Nan-Young;Chung, Hyung-Wook;Lee, Jung-Eun;Noh, Mi-Jung;Byun, Myung-Woo
    • Food Science and Preservation
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    • v.6 no.3
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    • pp.297-302
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    • 1999
  • To investigate an alternative technique to phosphine fumigation, being used for controlling storage insects of dried ginseng, comparative effects of gamma irradiation (5 kGy) and fumigation on the content of moisture, saponins, free sugars, and amino acids of commercially-packaged white ginseng were evaluated immediately after and at the 6th month of storage at 20$^{\circ}C$ and 70% RH after both treatments. The initial moisture content (8.44%) of the sample was not changed with the treatments, and maintained the 10% levels of moisture until 6 months of storage. Major ginsenosides were stable to both treatments, but they showed some reduced content in the control and fumigated samples at the 6th month of storage. Gamma irradiation caused some decrease in the content of free sugars and the subsequent storage of the sample resulted in a further reduction in their content in the order of irradiated, fumigated and control samples. Although irradiation and fumigation brought about a decrease in the content of fee amino acids by about 5%, however the storage period for 6 months was shown more influential than the treatments used for the improvement of biological quality in stored white ginseng.

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방사선 조사된 고추가루로 담근 깍두기의 발효양상

  • 성태화;김미리
    • Proceedings of the Korean Society of Food and Cookery Science Conference
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    • 2003.10a
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    • pp.88-88
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    • 2003
  • 건고추는 대부분 세척이나 살균의 과정을 거치지 않고 저장, 유통되므로 해충이나 미생물 오염에 의한 식품위생면이나 상품가치면에서 문제가 되고 있다. 고춧가루의 미생물과 해충 방제를 위하여 ethylene oxide나 propylene oxide 등의 훈증제가 사용되고 있으나 문제점이 많아 점차 사용이 금지되고 있는 실정에 있다. ${\gamma}$-선 조사는 훈증제, 자외선 조사, 초단파 처리등 기존의 방법에 비해 살균 효과는 물론 식품의 품질과 건전성 실험 결과에서도 우수하다고 보고되었다. (중략)

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Fumigant and Repellency Effects of Terpenes against the Two-Spotted Spider Mite, Tetranychus urticae (Acari: Tetranychidae) (점박이응애에 대한 Terpene류의 훈증과 기피효과)

  • 이소영;유정수;문선주;이상길;김철수;신상철;김길하
    • Korean journal of applied entomology
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    • v.42 no.3
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    • pp.249-255
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    • 2003
  • These studies were carried out to investigate fumigant, contact toxicity and repellency effects of 34 terpenes against acaricide susceptible the two-spotted spider mite, Tetranychus urticae. In addition, the efficacy was also tested against two acaricide-resistant strains. Two terpenes, isosafrole and safrole showed fumigant toxicity of 98.4%, at 10${\mu}\ell$/1 (air) concentration. LD$\_$50/ values of these two terpenes were 2.6${\mu}\ell$/1 and 4.3${\mu}\ell$l/1, respectively. Most terpenes showed low or no contact toxicity, except isosafrole showing 60.2% mortality against eggs. Hexanoic acid and limonene showed repellency effects of 79.1%, 87.8%, respectively, to the susceptible strain at concentration of 1,000 ppm in the lab conditions. Hexanoic acid (1,000 ppm) showed repellency effected of 77.8% and 83.3% to fenpropathrin and pyridaben resistant strains, respectively. However, limonene showed no repellency to the two resistant strains.

Study of the present situation on the termite control of wooden structures(II) - Focused on the case of Japan (목조건축물의 흰개미 방제에 대한 국외 현황조사(II) - 일본의 사례를 중심으로)

  • Jeong, Soyoung
    • 보존과학연구
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    • s.34
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    • pp.84-99
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    • 2013
  • There are more than 2,900 different species of termites in the world, and just there are 23 species in Japan. They caused more severe infestation compared with Korea. When a structure has become infested with termites, it is important that appropriate action must be taken: the chemical pest control (fumigation, soil termiticide treatment, bait system etc.) or the non-chemical pest control (low oxygen treatment, carbon dioxide treatment, high/low temperature treatment etc.). Especially, there were attempts to make practical protocol of various alternatives since the fumigant(methyl bromide) had been phased out in 2005 in Japan, and practically non-chemical methods would be effective alternatives for some cases, where the scale of infestation is small and limited and when long treatment is possible. But most of all, it is important that the process of pest control is made according to each species of termites with consideration for different characteristics of termites.

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