Korean Journal of Weed Science (한국잡초학회지)

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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Isolation of Herbicidal Substances from Bulbs of Lycoris flavescens M.Y.Kim & S.T.Lee

붉노랑상사화 인경으로부터 살초활성 물질의 분리

  • Lee, Dong-Gu (Medicinal Plant Resources Major, School of Bioresource Sciences, Andong National University) ;
  • Kim, Kun-Woo (Medicinal Plant Resources Major, School of Bioresource Sciences, Andong National University)
  • 이동구 (안동대학교 생명자원과학부 생약자원학) ;
  • 김건우 (안동대학교 생명자원과학부 생약자원학)
  • Received : 2011.12.21
  • Accepted : 2011.12.27
  • Published : 2011.12.31
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Abstract

This study was conducted to determine the herbicidal activity of herbicidal substances and identify them in bulbs of Lycoris flavescens. Methanol extract was purified by a series of chromatographic techniques including silica gel column chromatography, preparative TLC, and HPLC. The final HPLC gave two active fractions and two herbicidal substances were obtained. By GC/MS analysis, one was identified as galanthine (galanthan-1-ol) and the other was identified as montanine ($O^2$-methyl pancracine), an isoquinoline alkaloid. Montanine showed nearly 100% of growth inhibition on the shoot and root of barnyardgrass (Echinochloa crusgalli) seedlings at $20{\mu}g\;mL^{-1}$ as compared with the control. Meanwhile, methanol extract of L. flavescens bulbs showed only about 3.1% and 8.3% of growth inhibition on the shoot and root of rice cultivar, Hwayeongbyeo seedlings at $1,000{\mu}g\;mL^{-1}$ as compared with the control, respectively.

연구는 붉노랑상사화 인경에 함유된 살초활성 물질을 분리하여 살초활성을 평가하고 그 화학구조를 구명하고자 수행되었다. Silica gel flash column chromatography, preparative TLC, HPLC 등 일련의 크로마토그래피법들을 통해 붉노랑상사화 인경의 MeOH 추출물을 분리 정제하였다. HPLC에 의해 최종 획득된 활성분획에 대한 GC/MS 분석 결과, galanthine (galanthan-1-ol)과 isoquinoline alkaloid인 montanine ($O^2$-methyl pancracine)이 동정되었다. Montanine은 $20{\mu}g\;mL^{-1}$ 농도에서 돌피 유묘의 생장을 거의 100% 억제시키는 것으로 나타났다. 한편, 붉노랑상사화 인경의 MeOH 추출물은 $1,000{\mu}g\;mL^{-1}$ 에서 대조구에 비해 화영벼 유묘의 신초와 유근의 생장을 각각 약 3.1% 및 8.3% 억제하였다.

Keywords

References

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