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우이음 ( E-eum Woo ),이강선 ( Gang-seon Lee ),이인경 ( In-kyoung Lee ),최재을 ( Jae-eul Choi ),윤봉식 ( Bong-sik Yun ) 한국균학회 2016 韓國菌學會誌 Vol.44 No.3
Korean ginseng (Panax ginseng) possesses various biological and pharmacological properties. Damping-off is a critical disease on ginseng seedlings, which is caused by the fungal pathogens Rhizoctonia solani and Pythium sp.. This disease is generally controlled by the application of fungicides, but also biological control is an efficient and environmentally friendly way to prevent ginseng damping-off. In a previous study, we screened soil-borne bacteria with potential applications as biological control agents for ginseng damping-off and selected the bacterial strain Streptomyces sp. A3265, producing antifungal substances guanidylfungin and methylguanidylfungin. In this study, we investigated control efficacy of Streptomyces sp. A3265 against ginseng damping-off in the field. As a result, the incidence of damping-off was significantly reduced when soaking ginseng seeds in the culture broth of Streptomyces sp. A3265.
암갈색그물버섯(Boletus umbriniporus)에서 분리한 indole alkaloid
이윤주,황병순,송자경,김대원,우이음,이인경,윤봉식,Lee, Yoon-Ju,Hwang, Byung-Soon,Song, Ja-Gyeong,Kim, Dae-Won,Woo, E-Eum,Lee, In-Kyoung,Yun, Bong-Sik 한국균학회 2015 韓國菌學會誌 Vol.43 No.1
Mushrooms are valued as a nutritional food and also as an important source of useful medicinal components. They produce various secondary metabolites which have interesting biological activities and unique chemical structures. As part of our ongoing investigation on chemical constituents and bioactive components of Korean native mushrooms, compound 1, an indole alkaloid, was isolated from the fruiting body of Boletus umbriniporus. B. umbriniporus is characterized by its yellow flesh, which changes to pallid blue when exposed to air, and its chemical constituent has not been reported. Chemical structure of compound 1 was determined to be flazin on the basis of ESI-mass, $^1H$ NMR, $^{13}C$ NMR, $^1H-^1H$ COSY, HMQC, and HMBC analysis. This compound was isolated from the fruiting body of B. umbriniporus for the first time. 우리나라 자생 버섯에 함유된 화학적 구성성분을 조사하던 중 암갈색그물버섯에서 indole alkaloid 화합물을 분리하고 mass 및 NMR 분석을 통하여 화학구조를 flazin으로 동정하였다. 비록 Flazin 화합물이 젖비단그물버섯에서 분리되어 보고된 적은 있으나 본 연구에 의하여 암갈색그물버섯에도 flazin 성분을 함유하고 있음이 처음으로 밝혀졌다.
단보 : 암갈색그물버섯(Boletus umbriniporus)에서 분리한 indole alkaloid
이윤주 ( Yoon Ju Lee ),황병순 ( Byung Soon Hwang ),송자경 ( Ja Gyeong Song ),김대원 ( Dae Won Kim ),우이음 ( E Eum Woo ),이인경 ( In Kyoung Lee ),윤봉식 ( Bong Sik Yun ) 한국균학회 2015 Mycobiology Vol.43 No.1
Mushrooms are valued as a nutritional food and also as an important source of useful medicinal components. They produce various secondary metabolites which have interesting biological activities and unique chemical structures. As part of our ongoing investigation on chemical constituents and bioactive components of Korean native mushrooms, compound 1, an indole alkaloid, was isolated from the fruiting body of Boletus umbriniporus. B. umbriniporus is characterized by its yellow flesh, which changes to pallid blue when exposed to air, and its chemical constituent has not been reported. Chemical structure of compound 1 was determined to be flazin on the basis of ESI-mass, 1H NMR, 13C NMR, 1H-1H COSY, HMQC, and HMBC analysis. This compound was isolated from the fruiting body of B. umbriniporus for the first time.