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최향숙,Choi, Hyang-Sook 한국식품영양학회 2019 韓國食品營養學會誌 Vol.32 No.4
This study investigated the volatile flavor composition of essential oils from Ligularia fischeri and Ligularia fischeri var. spiciformis. The essential oils obtained from the plants were analyzed by gas chromatography (GC) and GC-mass spectrometry (GC-MS). 99.63% volatile flavor compounds were identified in the essential oil from the L. fischeri. The major compounds were (E)-3-hexenol (30.73%), longiverbenone (13.23%), viridiflorol (12.39%), ${\gamma}$-muurolene (7.32%), limonene (6.12%), and caryophyllene (${\beta}-4.24%$). 99.76% volatile flavor compounds were identified in the essential oil from the L. fischeri var. spiciformis. The major compounds were ledol (42.81%), (E)-15-heptadecenoic acid (33.91%), ${\beta}$-bisabolol (3.23%), viridiflorol (3.08%), and cis-${\alpha}$-farnesene (2.60%). Although the two plants are very similar, the chemical composition of the essential oils was significantly different in quality and quantity. In the case of L. fischeri., it has high contents of monoterpene and sesquiterpene. (E)-3-hexenol, longiverbenone, ${\alpha}$-phellandrene, and ${\alpha}$-myrcene were regarded as the characteristic odorants of L. fischeri, but they were not identified in L. fischeri var. spiciformis. Ledo, (E)-15-heptadecenoic acid, and ${\beta}$-bisabolol were regarded as the characteristic odorants of L. fischeri var. spiciformis, but they were not identified in L. fischeri. The ratio of limonene, ${\gamma}$-muurolene and viridiflorol can be used as an indicator to distinguish between these two plants.
최향숙,한세영 한국생애학회 2011 생애학회지 Vol.1 No.2
The purpose of this study was to examine the effects the mother's perfectionism and self-concept have on her parenting beliefs. The participants were 290 mothers of 3- to 5-year-old young children from 5 kindergartens in Daejeon and Cheongju cities. Collected data were analyzed utilizing the hierarchical regression analysis of SPSS 12.0 program. The findings are as follows: First, mothers with a high level of perfection propensity for standards, failures, mistakes, and fears and those mothers with a low moral self-concept all showed holding unto strong parental beliefs in the importance of their children's problem-solving skills. Secondly, those mothers with a high level of perfection propensity for high standards, failure, mistake, and family self-concept also reported a strong parental beliefs in their children's problem-solving skill. Thirdly, those mothers with a high level of perfection for high standards reported strong parental beliefs in the importance of their children's everyday skills. Fourthly, those mothers with a high family self-concept and social self-concept demonstrated strong parental beliefs in the importance of their supports for the children. In conclusion, this study suggested that mother's high tendency for perfection in areas of standards, failure, mistake, and fear, moral self-concept, and family self-concept had significant effects on their parental beliefs.
수확 시기에 따른 벌개미취 정유의 주요 화합물 함량 변화
최향숙,Choi, Hyang-Sook 한국식품영양학회 2014 韓國食品營養學會誌 Vol.27 No.2
This study investigates the chemical compositions of Aster koraiensis Nakai essential oils and the quantitative changes of major terpene compounds according to various harvesting times. The essential oils obtained by hydrodistillation from the aerial parts of Aster koraiensis Nakai are being analyzed by GC and GC-MS. The essential oil compositions of Aster koraiensis Nakai are characterized byhigher contents of sesquiterpene compounds. Ninety-seven volatile flavor compounds are being identified in the essential oils from Aster koraiensis Nakai harvested in 2010, and caryophyllene oxide (8.38%), aristolene (7.08%), epiglobulol (5.57%), and ethyl furanone (4.73%) are the most abundant compounds. Ninety-five compounds are identified in the essential oils from the plants harvested in 2011, and aristolene (11.56%), calarene (9.33%), phytol (8.28%), ethyl furanone (7.63%), and epiglobulol (7.18%) are the most abundant compounds. Ninety-five compounds are being identified in the essential oils from the plants harvested in 2012, and calarene (15.3%), aristolene (14.24%), ethyl furanone (7.21%), phytol (6.98%) are the major compounds. The contents of aristolene, ${\alpha}$-caryophyllene, ${\alpha}$-muurolene, ${\alpha}$-calacorene, aromadendrene oxide, and calarene increase significantly from 2010 to 2012. The contents of ${\alpha}$-cubebene, isocaryophyllene, and diepi-${\alpha}$-cedrene epoxide decrease significantly from 2010 to 2012. The quantitative changes of aristolene and calarene according to harvesting time can be served as a quality index of the Aster koraiensis Nakai essential oils.