• 제목/요약/키워드: Chemical plant

검색결과 4,159건 처리시간 0.041초

Control Efficacy of Phloretin Isolated from Apple Fruits Against Several Plant Diseases

  • Shim, Sang-Hee;Jo, Su-Jung;Kim, Jin-Cheol;Choi, Gyung-Ja
    • The Plant Pathology Journal
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    • 제26권3호
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    • pp.280-285
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    • 2010

  • In the course of a searching natural antifungal compounds from plant sources, we found that the methanol extract ($3,000\;{\mu}g/ml$) of Malus domestica fruits had potential of control against rice blast (Magnaporthe grisea) and tomato late blight (Phytophthora infestans). Under bioassay-guided purification, we isolated phloretin, a phenolic compound, with in vivo antifungal activity against M. grisea. By 1-day protective application of phloretin ($500\;{\mu}g/ml$), the compound strongly inhibited the disease development of M. grisea and P. infestans on rice and tomato seedlings, respectively. And red pepper anthracnose caused by Colletotrichum coccodes also was moderately suppressed. However, rice sheath blight (Rhizoctonia solani AG1), and barley powdery mildew (Blumeria graminis f. sp. hordei) were hardly controlled. In addition, the compound showed in vitro antifungal activity against some plant pathogenic fungi including Phytophthora capsici, Alternaria panax, Sclerotinia sclerotiorum, R. solani AG4, and M. grisea. This is the first report on the antifungal activity of phloretin against plant pathogenic fungi.

  • https://doi.org/10.5423/PPJ.2010.26.3.280 인용 PDF KSCI

HAZOP에 의한 K화학공장의 공정위험성 평가 (A Process Hazard Analysis using HAZOP in K Chemical Plant)

  • 이동형;배기웅;남소영;남경돈;이준열
    • 대한안전경영과학회지
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    • 제2권1호
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    • pp.129-139
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    • 2000

  • Hazard and operability Review(HAZOP) is widely used as a process safety analysis which systematically identifies potential process deviations and settles the problems. In this paper, we carried out a process hazard analysis using HAZOP in K chemical plant. As a result, we showed that the plant could be operated more saftly and be saved a lot of money by eliminating several existing hazardous factors through the change of processes and designs.

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