Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Antifungal Activity or Coptis japonica Root-stem extract and Identification of Antifungal Substances

황련추출액의 항균활성과 항균성물질의 동정

  • Published : 1999.12.01
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Abstract

Crude extract of Coptis japonica root-stem was evaluated for antifungal activity against Phytophthora capsici, Fusarium oxysporum, Colletotrichum dematium, Colletotrichum truncatum, Botrytis cinerea, Botryosphaeria dothidea and Alternaria porri, and antifungal active compound from the extract was identified. In addition, the usefulness of the extract for some plants disease control was investigated. Crude extract of C. japonica root-stem exhibited antifungal activity against P. capsici, F. oxysporum, C. dematium, B. cinerea, B. dothidea and A. porri. Antifungal activity of the substance isolated from C. japonica root-stem was similar to a standard chemical berberine-Cl. Red-pepper fruit rot, sesame stem rot and welsh-onion alternaria leaf spot were effectively controlled by the crude extract of C. japonica root-stem. Phytotoxicity was not observed in the red-pepper and welsh-onion leaves and red-pepper and strawberry fruits with exogenous foliage application of the crude extract. Seeds germination and radicle growth of red-pepper and sesame were inhibited by the crude extract of C. japonica root-stem. 4.24g of yellowish compound per 100g of C. japonica root-stem was obtained. The compound was identified as berberine-Cl by HPLC.

황련(Coptis japonica)의 추출액을 공시하여 Phytophthora capsici, Fusarium oxysporum, Colletotrichum dematium, C. truncatum, Botrytis cinerea, Botryosphaeria dothidea과 Alternaria porri에 대해 항균 활성 검정, 몇가지 작물에 대한 병해 방제 효과를 조사하고 항균 활성 물질을 동정하였다. 황련 추출액은 P. capsici, F. oxysporum, C. dematium, B. cinerea, B. dothidea 및 A. porri에 대해서 항균력이 우수하였다. Methanol을 용매로 추출하여 분리된 물질과 berberine-Cl 표준품의 항균활성을 비교할 때, 황련추출액으로부터 분리된 물질은 표준품 berberine-Cl과 비슷하게 항균력을 나타내었다. 황련 추출액은 고추 역병(83.3%), 참깨 모잘록병 (92.0%) 및 파 검은무늬병(87.5%)에 대해서 방제효과가 인정되었다. 고추 잎과 과실, 파 잎 및 딸기 과실에는 약해가 나타나지 않았으나 고농도에서는 고추 및 참깨의 발아를 억제하거나 유근의 신장을 억제하는 것으로 나타났다. Methanol로 추출한 황련 추출액으로부터 황색 분말 4.24g/100g을 얻을 수 있었다. 이들 물질을 HPLC로 분석한 결과 항균성을 나타내는 물질은 berberine-Cl로 동정되었다.

Keywords

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