• Title, Summary, Keyword: Gyeonggi-Do

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Comparison of Biochemical Profiles with Biogroups for the Identification of Cronobacter spp. (Enterobacter sakazakii)

  • Kim, Jung-Beom;Park, Yong-Bae;Kim, Woon-Ho;Kim, Ki-Cheol;Jeong, Hong-Rae;Kim, Dae-Hwan;Kang, Suk-Ho;Yong, Kum-Chan;Yoon, Mi-Hye;Park, Yong-Chul
    • Journal of Food Hygiene and Safety
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    • v.24 no.4
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    • pp.307-311
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    • 2009
  • The objectives of this study were to compare the biochemical profiles with biogroups for the identification of Cronobacter spp. (formally known as Enterobacter sakazakii) isolates using biochemical identification kits. A total of 38 Cronobacter spp. contained 5 clinical, 31 food, and 2 environmental isolates were used. All isolates were identified as Cronobacter spp. with the Vitek II system and ID 32E kit. The API 20E kit identified all isolates as Cronobacter spp. but the percentage identification was 51.1% for 16 of 38 isolates. These strains were contained to Biogroup 2, 9, 10, and 11. The utilization of inositol is a factor determining the percentage identification of Cronobacter spp. with the API 20E kit.

A Study on the Distribution Characteristics of Bromide and Bromate in Drinking Water in Northern Gyeonggi Area (경기북부지역 먹는 물 중 브롬이온 및 브롬산염의 분포특성에 관한 연구)

  • Jung, Jong-Pil;Choi, Si-Rim;Ryu, Hyeung-Rial;Park, Gyoung-Su;Song, Hee-Il;Lee, Hyun-Jin;Jo, Mi-Hyun;Oh, Jo-Gyo;Yoon, Mi-Hye
    • Journal of Environmental Health Sciences
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    • v.44 no.3
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    • pp.244-249
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    • 2018
  • Objectives: The purpose of this study was the investigation of bromide and bromate in drinking water of water supply plants, mineral springs and small water supply system located in northern area of Gyeonggi province. Methods: Analytical method was based on EPA 326.0 to use Postcolumn reaction (PCR). The instrument was 887 professional UV/VIS detector IC manufactured in Metrohm. Results: Bromate was detected at $0.5{\sim}2.4{\mu}g/L$ in tap water from 5 water supply plants. These plants were used as disinfection method for sodium hypochlorite and on-site chlorine that causes generate bromate as a by products even if not used ozone. Conclusions: The bromate was detected up to $2.5{\mu}g/Lin$ drinking water in northern Gyeonggi area that showed within $10{\mu}g/L$ for standard of tap water. However, the continuous monitoring of bromate is necessary in drinking water.

Insecticidal Activities of Plant Extracts against Tetranchus urticae

  • Lee, G.Y.;Han, Y.H.;Soh, H.S.;Lee, H.J.;Kim, S.K.
    • Korean Journal of Organic Agriculture
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    • v.19 no.spc
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    • pp.275-278
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    • 2011
  • To find an alternative for synthetic pesticides, methanol extracts from 69 plant samples were tested for their insecticidal activity against two spotted mite (Tetranchus urticae Koch). Seven plant extracts including Angelica japonica showed over 80% insecticidal activity at 5000 mg/L. Extract of Prunus armeniaca seed showed high insecticidal activity at 3000 mg/L. As a naturally occurring pesticide, P. armeniaca could be useful as a new botanic insecticide.