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Quantitative Analysis of Vitamin B5 and B6 Using High Performance Liquid Chromatography

고속액체크로마토그래피를 이용한 비타민 B5 및 B6의 정량 분석

  • Kim, Gi-Ppeum (Department of Herbal Medicine Resource, Kangwon National University) ;
  • Hwang, Young-Sun (Department of Herbal Medicine Resource, Kangwon National University) ;
  • Choung, Myoung-Gun (Department of Herbal Medicine Resource, Kangwon National University)
  • 김기쁨 (강원대학교 생약자원개발학과) ;
  • 황영선 (강원대학교 생약자원개발학과) ;
  • 정명근 (강원대학교 생약자원개발학과)
  • Received : 2017.07.24
  • Accepted : 2017.09.01
  • Published : 2017.10.31

Abstract

Recently, many people have demanded reliable nutritional data even for minor-components. On the other hand, an analytical method for the analyses of vitamin $B_5$ and $B_6$ is lacking. Therefore, this study attempted to validate with accuracy and precision the analysis of vitamin $B_5$ and $B_6$ using a high-performance liquid chromatography (HPLC) method. The vitamin $B_5$ and $B_6$ contents were analyzed using an Agilent 1260 series HPLC system. YMC-Pack ODS-AM ($250{\times}4.6mm$ I.D.) and YMC-Pack Pro RS $C_{18}$ ($250{\times}4.6mm$ I.D.) columns were used for the analyses of vitamin $B_5$ and $B_6$, respectively. In the case of vitamin $B_5$, the flow rate was set to 1.0 mL/min by isocratic elution using the 50 mM $KH_2PO_4$ solution (pH 3.5)/acetonitrile (ACN) (95:5, v/v) with monitoring at 200 nm using HPLC/DAD, whereas the flow rate for vitamin $B_6$ was set to 1.0 mL/min of flow rate by isocratic elution using a 20 mM $CH_3CO_2Na$ solution (pH 3.6)/ACN (97:3, v/v) with monitoring by excitation at 290 nm and emission at 396 nm using HPLC/FLD. The column temperature was set to $30^{\circ}C$. The injection volume was $20{\mu}L$ for each experiment. The specificity of the accuracy and precision for vitamin $B_5$ and $B_6$ were also validated by HPLC. The results showed high linearity in the calibration curve for vitamin $B_5$ ($R^2=0.9998^{{\ast}{\ast}}$), the limit of detection (LOD) and limit of quantitation (LOQ) were 0.4 mg/L and 1.3 mg/L, respectively, In contrast, for the calibration curve of vitamin $B_6$, which showed high linearity ($R^2=0.9999^{{\ast}{\ast}}$), the LOD and LOQ were 0.006 mg/L and 0.02 mg/L, respectively.

식품 함유 비타민 $B_5$$B_6$의 최적 HPLC 분석 조건을 검토한 결과 비타민 $B_5$의 경우 YMC-Pack ODS-AM($250{\times}4.6mm$ I.D.) 칼럼을 이용하고, A용매로 50 mM $KH_2PO_4$(pH 3.5)을, B용매는 아세토니트릴을 이동상 용매로 사용하는 A용매 95% 등용매용리 조건에서 200 nm의 파장으로 분석하는 HPLC/DAD법을 최적조건으로 확립하였다. 한편 비타민 $B_6$의 최적분석조건은 여기파장(excitation) 290 nm, 방출파장(emission) 396 nm로 분석하는 HPLC/FLD법으로써, 칼럼은 YMC-Pack Pro RS $C_{18}$($250{\times}4.6mm$ I.D.), 이동상 용매는 A용매 20 mM $CH_3CO_2Na$(pH 3.6), B용매 아세토니트릴을 A용매 97% 등용매용리 조건으로 사용하였다. 비타민 $B_5$$B_6$의 표준검량선은 $R^2$값이 각각 0.9998 및 0.9999로 고도의 직선성을 나타내었고, 검출한계 및 정량한계는 비타민 $B_5$의 경우 각각 0.4 mg/L 및 1.3 mg/L, 비타민 $B_6$의 경우 각각 0.006 mg/L 및 0.02 mg/L로 산출되었다.

Keywords

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