Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Modification and Validation of Analytical Method for Oxypaeoniflorin and Paeoniflorin in Moutan Cortex Radicis Extract

목단피 추출물의 Oxypaeoniflorin 및 Paeoniflorin의 분석법 개선 및 검증

  • Choi, Seung-Hyun (Department of Food Science and Biotechnology, Kangwon National University) ;
  • Yoo, Chang-Kil (Graduate School of Integrative Medicine, CHA University) ;
  • Hwang, Ji-Hyun (Department of Food Science and Biotechnology, CHA University) ;
  • Lee, Gi-Bbeum (Department of Food Science and Biotechnology, CHA University) ;
  • Lee, Young-Jin (Graduate School of Integrative Medicine, CHA University) ;
  • Lee, Boo-Yong (Department of Food Science and Biotechnology, CHA University) ;
  • Lee, Ok-Hwan (Department of Food Science and Biotechnology, Kangwon National University)
  • 최승현 (강원대학교 식품생명공학과) ;
  • 유창길 (차의과학대학교 통합의학대학원) ;
  • 황지현 (차의과학대학교 식품생명공학과) ;
  • 이기쁨 (차의과학대학교 식품생명공학과) ;
  • 이영진 (차의과학대학교 통합의학대학원) ;
  • 이부용 (차의과학대학교 식품생명공학과) ;
  • 이옥환 (강원대학교 식품생명공학과)
  • Received : 2017.06.22
  • Accepted : 2017.07.26
  • Published : 2017.09.30
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Abstract

The aim of this study was the validation of a modified analytical method for determination of oxypaeoniflorin and paeoniflorin in Moutan Cortex Radicis extract. For validation of the analytical method, we modified established analytical methods and validated improvement. For validation, the specificity, linearity, precision, accuracy, limit of detection (LOD), and limit of quantification of oxypaeoniflorin and paeoniflorin were measured by high performance liquid chromatography. The results show that the correlation coefficients of the calibration curve for oxypaeoniflorin and paeoniflorin were 1.0000 and 0.9998, respectively. The LOD for oxypaeoniflorin and paeoniflorin were $0.23{\mu}g/mL$ and $0.25{\mu}g/mL$, respectively. The inter-day and intra-day precision values of oxypaeoniflorin and paeoniflorin were 0.70~3.19% and 1.74~2.43%, and 0.32~0.92% and 0.62~2.28%, respectively. The inter-day and intra-day accuracies of oxypaeoniflorin and paeoniflorin were 98.33~102.11% and 97.72~118.12%, and 98.44~101.56% and 97.10~112.00%, respectively. Therefore, the analytical method was validated for the detection of oxypaeoniflorin and paeoniflorin in Moutan Cortex Radicis.

목단피의 oxypaeoniflorin 및 paeoniflorin의 함량 분석 및 원료의 표준화를 위하여 분석법의 개발 및 검증을 실시하였다. 기존의 보고된 분석법을 개선하여 분석법을 개발하고 확립된 분석법에 대한 분석법 검증을 실시하였다. 분석법 검증은 특이성, 직선성, 정확성, 정밀성, 검출한계 및 정량한계를 통하여 분석법의 신뢰성을 검증하였다. HPLC를 이용한 분석방법에서 표준용액의 머무름 시간과 목단피 추출물의 머무름 시간이 일치하였으며, 동일한 spectrum을 나타내는 것을 확인하여 분석법의 특이성을 검증하였다. Oxypaeoniflorin 및 paeoniflorin의 검량선은 상관계수 값이 각각 1.0000, 0.9998로 나타나 우수한 직선성을 보여주어 분석에 적합함을 확인하였다. 농도를 아는 시료에 인위적으로 저농도, 중간농도, 고농도의 표준물질을 첨가하여 정밀성 및 정확성을 계산하였다. Oxypaeoniflorin 및 paeoniflorin의 정밀성은 일간 정밀성, 일내 정밀성으로 확인하였으며, oxypaeoniflorin 및 paeoniflorin의 일간 정밀성은 각각 0.70~3.19%, 1.74~2.43% 수준으로 확인되었으며, 일내 정밀성은 0.32~0.92%, 0.62~2.28% 수준으로 5% 이하의 우수한 정밀성을 보였다. 정확성 측정 결과 oxypaeoniflorin 및 paeoniflorin의 일간 정확성은 98.33~102.11%, 97.72~118.12%를 나타내었으며, 일내 정확성은 98.44~101.56%, 97.10~112.00% 수준으로 우수한 정확성을 나타내었다. Oxypaeoniflorin 및 paeoniflorin의 검출한계는 각각 $0.23{\mu}g/mL$, $0.25{\mu}g/mL$였고 정량한계는 $0.71{\mu}g/mL$, $0.77{\mu}g/mL$로 나타내어, 저농도에서도 검출이 가능함을 확인하였다. 분석법 검증 결과, 확립된 분석법은 특이성, 직선성, 정밀성, 정확성, 검출한계 및 정량한계가 모두 우수한 분석법임을 검증하였다. 또한, 검증된 분석법을 이용하여 목단피 추출물 시료 중 oxypaeoniflorin 및 paeoniflorin의 함량을 분석한 결과 oxypaeoniflorin $6.43{\pm}0.20mg/dry\;weight\;g$, paeoniflorin $20.25{\pm}0.37mg/dry\;weigh\; g$의 함량을 가지고 있는 것으로 확인되었다. 본 연구 결과 목단피의 지표성분인 oxypaeoniflorin 및 paeoniflorin의 HPLC를 이용한 동시분석방법이 적합한 분석방법임이 검증되었다.

Keywords

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