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        검색결과 3

        2.
        2016.04 KCI 등재 서비스 종료(열람 제한)
        Background: A set of logical criteria that can accurately identify and verify the cultivation region of raw materials is a critical tool for the scientific management of traditional herbal medicine. Methods and Results: Volatile compounds were obtained from 19 and 32 samples of Angelica gigas Nakai cultivated in Korea and China, respectively, by using steam distillation extraction. The metabolites were identified using GC/MS by querying against the NIST reference library. Data binning was performed to normalize the number of variables used in statistical analysis. Multivariate statistical analyses, such as Principal Component Analysis (PCA), Partial Least Squares-Discriminant Analysis (PLS-DA), and Orthogonal Partial Least Squares-Discriminant Analysis (OPLS-DA) were performed using the SIMCA-P software. Significant variables with a Variable Importance in the Projection (VIP) score higher than 1.0 as obtained through OPLS-DA and those that resulted in p-values less than 0.05 through one-way ANOVA were selected to verify the marker compounds. Among the 19 variables extracted, styrene, α-pinene, and β-terpinene were selected as markers to indicate the origin of A. gigas. Conclusions: The statistical model developed was suitable for determination of the geographical origin of A. gigas. The cultivation regions of six Korean and eight Chinese A. gigas. samples were predicted using the established OPLS-DA model and it was confirmed that 13 of the 14 samples were accurately classified
        3.
        2001.12 KCI 등재 서비스 종료(열람 제한)
        삼백초주 제조중 기능성 성분의 이행성 정도를 측정하고자, 증자백미를 기준으로 개량누룩 5%, 양조용수 120%, 삼백초 건엽 분말 2% 또는 건근분말 5%를 첨가하여 삼백초주를 제조하였고, 발효기간에 따른 페놀성 화합물의 함량 변화를 조사하여 얻은 결과를 요약하면 다음과 같다. 1. 삼백초주의 total phenolics, flavonoid phenolics 및 quercetin 관련물질의 함량은 발효기간이 경과할수록 많았다. 2. 삼백초주의 total phenolics와 flavonoid phenolics 함량은 잎삼백초주에서 각각 762.5~1,054.7mg/l와 387.8~537.2mg/l, 뿌리삼백초주는 각각 608.4~928.8 mg/l와 329.5~481.7 mg/l로 잎삼백초주에서 높았다. 3. Quecetin 함량은 잎삼백초주에서는 3.5~3.8mg/l로 발효기간 간에 차이가 미미하였으며, 뿌리 삼백초주에서는 검출되지 않았다. Quercetin 관련 물질의 총함량은 잎삼백초주에서 72.3~84.2 mg/l, 뿌리삼백초주 21.6~32.2 mg/l로 잎삼백초주에서 높았다. 4. 뿌리삼백초주에 비하여 잎삼백초주에서 total phenolics, flavonoid phenolics 및 quercetin 관련물질의 함량이 현저히 높아 잎을 이용하여 삼백초주를 제조하는 것이 효과적이었다.