• Title/Summary/Keyword: Paulowinia coreana

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Chemical Constituents of the Twigs of Paulownia coreana (오동나무 가지의 성분)

  • Kim, Tae Woong;Min, Kyung Mi;Yu, Se Jong;Lee, Myung Jin;Jung, Hae Min;Cho, Won Jeong;Kim, Myong Jo;Chun, Wanjoo;Kwon, Yongsoo
    • Korean Journal of Pharmacognosy
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    • v.46 no.2
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    • pp.99-104
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    • 2015
  • Three triterpenoids, one sterol glycoside and a phenylpropanoid glycoside were isolated from the n-BuOH soulble fraction of Paulownia coreana twigs. On the basis of spectral data, the structure of isolated compounds were identified as pomolic acid (1), euscaphic acid (2), arjunic acid (3), daucosterol (4), and syringin (5), respectively. All compounds are isolated from this plant for the first time.

Diagnostic assessment on vegetation damage due to hydrofluoric gas leak accident and restoration planning to mitigate the damage in a forest ecosystem around Hube Globe in Gumi (구미 휴브글로브 주변 삼림생태계에서 불화수소가스 유출 사고에 기인한 식생피해 진단 및 그 피해를 완화시키기 위한 복원 계획)

  • Kim, Gyung Soon;An, Ji Hong;Lim, Chi Hong;Lim, Yun Kyung;Jung, Song Hie;Lee, Chang Seok
    • Journal of Wetlands Research
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    • v.17 no.1
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    • pp.45-52
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    • 2015
  • We obtained the following results from investigation on vegetation damage from 5 to 6 August, 2013, about one year after an accident that hydrofluoric acid leaked from a chemical maker, Hube Globe in Gumi. Pinus densiflora and Pinus strobus showed very severe damage. Ginko biloba, Quercus acutissima, Pinus rigida, Salix glandulosa, Hibiscus syriacus, and Lagerstroemia indica showed severe damage. Quercus variabilis, Lespedeza cyrtobotrya, and Miscanthus sinensis showed moderate damage. Quercus aliena, Smilax china, Arundidinella hirta, Ailanthus altissima, Robinia pseudoacacia, and Paulowinia coreana showed slight damage. We did not find any plants without leaf damage around there. This result means that fluoride damage still persists in this area as was known that fluoride remains for a long time in air, soil and water and exerts negative effects at all levels of an ecosystem. In addition, fluoride content contained in plant leaf depended on the distance from a fertilizer producing factory and vegetation damage tended to proportionate to the concentration in the Yeocheon industrial complex. In these respects, a measure for removal or detoxification of the remaining fluoride is urgently required around the hydrofluoric acid leak spot. Fertilizing of dolomite containing Ca and Mg, which can trap fluoride, was prepared as one of the restoration plans. In addition, phosphate fertilizing was added in order to enhance soil ameliorating effects. Furthermore, we recommend the introduction of tolerant plants as the second measure to mitigate fluoride damage. As the tolerant plants to make a new forest by replacing trees died due to hydrofluoric acid gas damage, we recommended Q. aliena and S. china, A. hirta, etc. were recommended as plant species to add mantle vegetation to the forest margin to ensure stable interior environment of the forest.