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Validation of Method Determining Coixol in Coix lachryma-jobi var. ma-yuen Roots Extract

율무근 추출물의 Coixol 성분 분석법 검증

  • Kwon, Jin Gwan (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • Seo, Changon (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • Choi, Yun-Hyeok (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • Choi, Chun Whan (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • Kim, Jin Kyu (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • Jeong, Wonsik (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • Lee, Ji Eun (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • O, Kyeong Hee (Hansolbio Co., Ltd.) ;
  • Hong, Seong Su (Bio-center, Gyeonggido Business and Science Accelerator)
  • 권진관 ((재)경기도경제과학진흥원) ;
  • 서찬곤 ((재)경기도경제과학진흥원) ;
  • 최윤혁 ((재)경기도경제과학진흥원) ;
  • 최춘환 ((재)경기도경제과학진흥원) ;
  • 김진규 ((재)경기도경제과학진흥원) ;
  • 정원식 ((재)경기도경제과학진흥원) ;
  • 이지은 ((재)경기도경제과학진흥원) ;
  • 오경희 (한솔생명과학(주)) ;
  • 홍성수 ((재)경기도경제과학진흥원)
  • Received : 2017.05.31
  • Accepted : 2017.07.14
  • Published : 2017.08.31

Abstract

An high performance liquid chromatography (HPLC) analysis method was developed for standard determination of coixol as a functional cosmetic material in Coix lachryma-jobi var. ma-yuen roots extract. HPLC was performed on a $C_{18}$ Unison US column ($4.6{\times}250mm$, $5{\mu}m$ column) using a gradient elution of 0.1% (v/v) trifluoroacetic acid and acetonitrile at a flow rate of 1.0 mL/min at $30^{\circ}C$. The analyte was detected at 290 nm. The HPLC method was validated in accordance with the International Conference on Harmonization guideline of analytical procedures with respect to specificity, precision, accuracy, and linearity. The limit of detection and quantitation were 0.07 and 0.25 mg/mL, respectively. Calibration curves showed good linearity ($R^2$>0.9995), and the precision of analysis was satisfied (less than 0.29%). Recoveries of quantified compounds ranged from 98.36 to 100.30%. This result indicates that the established HPLC method is very useful for the determination of a marker compound in C. lachryma-jobi var. ma-yuen roots extracts.

본 연구는 HPLC를 이용하여 율무근 추출물을 기능성 화장품 원료로 개발하기 위하여 지표성분인 coixol의 분석법 설정과 분석법에 대한 검증을 실시하고자 하였다. 표준액과 율무근 추출물은 다른 물질의 간섭 없이 분리되었으며, 표준액과 추출물의 피크 유지시간이 일치한 spectrum을 나타내었다. 또한, blank에서 표준액과 겹치는 피크가 없는 것으로 특이성을 확인하였다. 검량선의 상관계수($R^2$)는 0.9995로 모두 양호한 직선성을 보였으며, 직선상의 검출한계는 0.07~0.08 mg/mL였고 정량한계는 0.23~0.25 mg/mL로 나타났다. 율무근 추출물 2.25, 4.5 및 6.75 mg/mL 세 농도의 회수율은 98.36~100.30%였으며 RSD는 0.26~0.29%로 나타나 RSD 2.0% 이하로서 정확성이 있음을 알 수 있었다. 정밀성은 0.05~0.29%의 정밀도(RSD)를, 실험실 내 정밀성에서는 0.03~0.29%의 정밀도(RSD)를 나타내었고, intra-day에서의 정밀도(RSD)는 0.37~1.64%, inter-day에서는 0.36~0.81%의 정밀도를 나타내어 율무근 추출물의 지표성분 coixol의 분석법은 적합한 시험법임이 검증되었다. 본 분석법은 율무근 추출물의 기능성화장품 원료 개발을 위한 기초자료로 활용될 것으로 생각된다.

Keywords

References

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