선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
제안 방법
- The programmed elution was performed in the following gradient elution: 0 – 20 min (20 → 65% B), 20 – 21 min (65 → 100% B), 21 – 25 min (100% B), 25 – 27 min (100 → 20% B), and 27 – 30 min (20% B), at the flow rate of 1.0 ml/min at the column temperature of 40 ℃.
대상 데이터
- Thisplant was dried cut before extraction. The plant was identified by Prof. Byong-Min Song (Department of Forest Science, Sangji University, Korea). The voucher specimen (natchem #54) was deposited in the laboratory of Natural Product Chemistry, Department of Pharmaceutical Engineering, Sangji University, Korea.
- Byong-Min Song (Department of Forest Science, Sangji University, Korea). The voucher specimen (natchem #54) was deposited in the laboratory of Natural Product Chemistry, Department of Pharmaceutical Engineering, Sangji University, Korea.
이론/모형
- The detection wavelength was fixed at 254 nm. For the sensitivity for detection and quantification, the LOD(limit-of-detection) and LOQ (limit-of-quantification) were determined by anS/N (signal-to-noise) method, respectively.
- The aglycones and their glycosides were also tested for the cholinesterase inhibition activity, because glycosides are often hydrolyzed in the gastrointestinal tract.10 Furthermore, the four compounds were quantitatively analyzed using an HPLC method.
- UV spectra were measured on a UV-160A UVvisible recording spectrophotometer. IR spectra were recorded with a KBr disk method on a JASCO 4200 FTIR spectrometer. 1H- and 13C-nuclear magnetic resonance(NMR) spectra were taken on a Bruker AM-600 spectro- meter using an internal standard tetramethylsilane (TMS).
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