녹비 작물 처리에 따른 운광벼 중 감마오리자놀 변화 (Treatment Effect of Green Manure Crops on Content of γ-Oryzanols from Korean Rice Variety, Unkwangbyeo)

서지정보

· 발행기관 : 한국환경농학회
· 수록지 정보 : 한국환경농학회지 / 34권 / 2호 / 98 ~ 104페이지
· 저자명 : 김헌웅, 신재형, 이민기, 이성현, 장환희, 조현숙, 이정태, 전원태, 김정봉

초록

BACKGROUND: γ-Oryzanol, a mixture of ferulic acid esters of triterpene alcohols and sterols, are a nutritionally important group of rice secondary metabolites. The γ -Oryzanol content and composition were found to vary with enviromental factors such as growth temperature, varietal origin, and cultivation method. Therefore, the effect of green manure treatments will be also be an important factor in their content.
METHODS AND RESULTS: The γ-Oryzanols extracted using dichloromethane/methanol were analyzed equipped liquid chromatography with a diode array detector. A total of ten components of γ-oryzanol including Δ7-stigmastenyl ferulate were isolated of which, cycloartenyl ferulate, 24-methylenecycloartanyl ferulate, campesteryl ferulate and sitosteryl ferulate were identified as the major components in Korean rice variety, Unkwang. The γ -oryzanol content in rice, in the presence of nitrogen fertilization using green manure was similar to conventional nitrogen fertilization, but was higher than the control(no fertilizations). The γ-oryzanol ontent in rice, in the presence of hairy vetch as green manure crop was the highest compared to other crops (opium-poppy, crimson clover, cornflower). As a result of PLS-DA using SIMCA 11.0 ver. as multivariate analysis program on the basis of total data, in all samples, the specific pattern and cluster of γ-oryzanol scores according to green manure crops and conditions were confirmed with possible distinguishing nitrogen effects.
CONCLUSION: The nitrogen contained in the green manure crops is considered to play a major role in the formation of γ-oryzanol. Hairy vetch which contains higher nitrogen increased the concentration of γ-oryzanol in rice.

영어초록

BACKGROUND: γ-Oryzanol, a mixture of ferulic acid esters of triterpene alcohols and sterols, are a nutritionally important group of rice secondary metabolites. The γ -Oryzanol content and composition were found to vary with enviromental factors such as growth temperature, varietal origin, and cultivation method. Therefore, the effect of green manure treatments will be also be an important factor in their content.
METHODS AND RESULTS: The γ-Oryzanols extracted using dichloromethane/methanol were analyzed equipped liquid chromatography with a diode array detector. A total of ten components of γ-oryzanol including Δ7-stigmastenyl ferulate were isolated of which, cycloartenyl ferulate, 24-methylenecycloartanyl ferulate, campesteryl ferulate and sitosteryl ferulate were identified as the major components in Korean rice variety, Unkwang. The γ -oryzanol content in rice, in the presence of nitrogen fertilization using green manure was similar to conventional nitrogen fertilization, but was higher than the control(no fertilizations). The γ-oryzanol ontent in rice, in the presence of hairy vetch as green manure crop was the highest compared to other crops (opium-poppy, crimson clover, cornflower). As a result of PLS-DA using SIMCA 11.0 ver. as multivariate analysis program on the basis of total data, in all samples, the specific pattern and cluster of γ-oryzanol scores according to green manure crops and conditions were confirmed with possible distinguishing nitrogen effects.
CONCLUSION: The nitrogen contained in the green manure crops is considered to play a major role in the formation of γ-oryzanol. Hairy vetch which contains higher nitrogen increased the concentration of γ-oryzanol in rice.

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