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HPLC analytical method validation of Aralia elata extract as a functional ingredients

두릅 추출물의 기능성 원료 표준화를 위한 HPLC 분석법 검증

  • Ahn, Eun-Mi (Department of Foodceutical Science, Daegu Hanny University) ;
  • Choi, Song-Am (Dowellbio Inc., Gyeonggi Venture Incubation Center) ;
  • Choi, Ji-Young (Dowellbio Inc., Gyeonggi Venture Incubation Center)
  • Received : 2017.07.07
  • Accepted : 2017.08.21
  • Published : 2017.10.30

Abstract

Aralia elata Seemann (AE) has long been used as a folk medicine for the treatment of various diseases including diabetes mellitus, anti-arthritic, and anti-gastric ulcer agent in Korea, Japan, and China. This study was performed to establish a simple and reliable HPLC/UV analytical method for determination of most active anti-hypertensive compound, a 3-O-${\alpha}$-L-rhamnopyranosyl($1{\rightarrow}$2)-${\alpha}$-L-arabinopyranosyl hederagenin 28-O-${\beta}$-D-xylopyranosyl($1{\rightarrow}6$)-${\beta}$-D-glucopyranosylester (HE) for the standardization of the shoot extract of AE as a health functional food ingredient. The quantitative analytical method of HE was optimized by HPLC analysis using reverse-phase C18 column at $40^{\circ}C$ with $H_2O$ and acetonitrile (70:30, v/v) as an isocratic mobile phase at a flow rate of 1.0 mL/min and detection wavelength of UV 205 nm. This HPLC/UV analytical method showed good specificity and high linearity in the tested range of 0.03125-2.0mg/ml with excellent coefficient of determination ($R^2$) of 0.9999. The limit of detection and limit of quantification were $12.0{\mu}g/mL$ and $36.5{\mu}g/mL$, respectively. Relative standard deviation (RSD) values of data from intra- and inter-day precision were less than 0.2% and 0.1%, respectively. These results indicate that the established HPLC/UV analytical method is very simple, specific, precise, accurate, and reproducible and thus can be useful for the quantitative analysis of HE as a functional anti-hypertensive compound in AE extract.

개별인정형 건강기능식품 기능성 원료로 개발한 두릅추출물의 표준화를 위해 항고혈압활성 효과를 가지고 있는 기능성분 HE를 지표성분으로 설정하고, HPLC/UV 방법을 이용하여 기능성분 분석법을 확립하며 그에 따른 유효성 검증을 실시하고자 하였다. 유효성 검증 결과, 본 시험법에서 표준용액의 피크유지시간과 두릅추출물의 피크유지시간이 일치하였다. 검량선의 결정 계수(R2)는 0.9999 이상의 높은 직선성을 보여 분석에 적합함을 알 수 있었으며, 검출 한계는 $12.0{\mu}g/mL$, 정량한계는 $36.5{\mu}g/mL$로 두릅 추출물 중의 HE 함량분석을 위한 충분한 한계 수준으로 확인되었다. 정확성에서 $98.8{\pm}0.865-104.7{\pm}2.536%$로 높은 수준의 HE 회수율을 보였으며, 평균 분석오차는 0.013%로서 기준인 10% 이내를 만족하였다. 또한 반복성에서는 평균 $101.5{\pm}0.4%$로 RSD 0.4%를 나타내었고, 실험실내 정밀성에서 RSD 0.2%, 완건성에서 RSD 0.2%를 나타내어 모두 적합함을 확인하였다. 한편, 제주산 두릅추출물 중에는 기능성 지표성분인 HE가 4.88% 함유되어 있는 것으로 확인되었다. 이상의 실험 결과, 두릅추출물의 항고혈압활성 기능성분인 HE의 HPLC/UV 분석방법은 특이성, 직선성, 정확성, 정밀성, 반복성, 완건성 등의 모든 항목에서 validation 기준에 적합한 시험 방법으로 확인되었다.

Keywords

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