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곰보배추에 함유된 6-Hydroxyluteolin 7-O-Glucoside 분석을 위한 HPLC/DAD 분석법 밸리데이션
이학동,바헤,최중원,김주리,유아람,배민정,이상현 한국생약학회 2021 생약학회지 Vol.52 No.3
We developed a method to identify and quantify 6-hydroxyluteolin 7-O-glucoside in the powder of Salvia plebeia (PS) using high-performance liquid chromatography coupled with diode array detector (HPLC/DAD) and equipped with reverse-phase INNO C18 column. The analytical method was optimized and validated using novel parameters. The obtained values for the limits of detection and quantification were 3.60 and 10.90 μg/mL, respectively. Calibration curve showed good linearity in the concentration range tested (0.00625-0.1 mg/mL, r2 = 1.0000), high accuracy (96.2-101.4%), and precision values (RSD £ 0.27%). Our analysis support the use of our method for accurately identifying and quantifying 6-hydroxyluteolin 7-O-glucoside from PS in routine analyses and large-scale extraction processes for content determination.
Determination of Silymarin and Silybin Diastereomers in Korean Milk Thistle using HPLC/UV Analysis
김주리,레오 아드리안 바헤,최중원,이학동,심재석,심지형,폴 존 헤랄디노,이상현 한국생약학회 2020 생약학회지 Vol.51 No.4
Silymarin (SM) and silybin diastereomers (SD) in milk thistle (Silybum marianum) were determined using high-performance liquid chromatography and quantified using a reverse-phase column in a gradient elution system. UV detection was performed at 288 nm. The content of SM and SD in milk thistle was 3.236 and 0.553 mg/g DW, respectively. Determining the presence and quantifying the content of SM and SD in milk thistle are vital for the pharmaceutical industry to identify optimal sources for developing health supplements or therapeutics.