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An Improved Analytical Method for the Determination of Qualitative and Quantitative Characteristics of Di- and Trisaccharides in Honey using GC and GC/MS

GC 및 GC/MS에 의한 벌꿀 중의 이·삼당류 정성 및 정량 특성과 개선된 동시분석방법의 확립

  • Kim, Jong-Bae (Food Analysis Division, Daegu Metropolitan Government Research Institute of Public Health and Environment) ;
  • Jang, Eun-Suk (Food Analysis Division, Daegu Metropolitan Government Research Institute of Public Health and Environment) ;
  • Kim, In-Suk (Food Analysis Division, Daegu Metropolitan Government Research Institute of Public Health and Environment) ;
  • Lee, Hee-Jin (Food Analysis Division, Daegu Metropolitan Government Research Institute of Public Health and Environment) ;
  • Lee, Hye-Jeong (Food Analysis Division, Daegu Metropolitan Government Research Institute of Public Health and Environment) ;
  • Seo, Hyun-Sun (Food Analysis Division, Daegu Metropolitan Government Research Institute of Public Health and Environment) ;
  • Park, Nam-Pyo (Food Analysis Division, Daegu Metropolitan Government Research Institute of Public Health and Environment)
  • 김종배 (대구광역시 보건환경연구원 식품분석과) ;
  • 장은숙 (대구광역시 보건환경연구원 식품분석과) ;
  • 김인숙 (대구광역시 보건환경연구원 식품분석과) ;
  • 이희진 (대구광역시 보건환경연구원 식품분석과) ;
  • 이혜정 (대구광역시 보건환경연구원 식품분석과) ;
  • 서현선 (대구광역시 보건환경연구원 식품분석과) ;
  • 박남표 (대구광역시 보건환경연구원 식품분석과)
  • Received : 2014.10.29
  • Accepted : 2014.12.08
  • Published : 2015.02.28

Abstract

The improved analytical method with gas chromatography (GC) and GC-mass spectrometry was established to identify and quantify disaccharides and trisacchrides in honey. In this method, the analysis of trimethylsilyl (TMS), TMS-oxime and TMS-methoxime sugars takes into account the determination of a single peak of complete separation on the chromatogram. The number of possible peaks for the qualitative and quantitative determination of TMS, TMS-oxime, and TMS-methoxime sugars was 17, 22, and 25, respectively. This new analytical method allowed for the determination of diand trisaccharides in honey by TMS-oxime and TMS-methoxime derivatives. This study suggested that the improved method is more suitable and precise than the other analytical methods for the simultaneous determination of sugars in honey.

본 연구의 목적은 벌꿀에 함유되어 있는 이 삼당류를 정성 및 정량하기 위하여 벌꿀분석에 많이 사용하고 있는 20개의 표준당류를 대상으로 TMS, TMS-oxime, TMS-methoxime 당류를 조제한 다음 GC 및 GC/MS에서 그들의 분리특성과 분리능을 조사하여 정성과 정량이 가능한 완전히 분리된 하나의 당류 피크를 선정하여 이를 벌꿀시료의 이당류와 삼당류 분석에 이용하는 것이다. 실험결과, 세가지 유도체화 당류들의 GC 및 GC/MS 분석에서 당류들은 정성 및 정량이 가능한 한 개 이상의 피크를 나타내었으며, 전반적인 당류들의 피크 분리능은 GC보다 GC/MS에서 좀 더 양호하게 나타났다. 최적 기기분석조건은 DB-5MSUI 컬럼을 사용하여, 초기 oven 온도를 $175^{\circ}C$에서 5분간 두고 $3^{\circ}C$씩 증가시킨 후 $245^{\circ}C$에서 20분간 머무르다가 $7^{\circ}C$씩 증가시킨 다음 $315^{\circ}C$에서 10분간 등온 분석할 때였다. 각각의 유도체화 조건에서 완전한 분리로 정량이 가능한 당류는 TMS 당류에서 sucrose, maltose (1), (2), cellobiose (1), (2), palatinose, ${\alpha},{\beta}$-trehalose, kojibiose (2), melibiose (1), (2), gentibiose, isomaltose (1), (2), raffinose, 1-kestose, erlose, melezitose였고, TMS-oxime 당류에서 sucrose, ${\alpha},{\alpha}$-trehalose, ${\alpha},{\beta}$-trehalose cellobiose (E), maltulose (E), turanose (Z), nigerose (Z), kojibiose (Z), palatinose (E), melibiose (Z), isomaltose (E), (Z)와 삼당류 전체였으며, TMS-methoxime 당류는 sucrose, cellobiose (E), maltulose (E), cellobiose (Z), turanose (E), maltose (Z), ${\alpha},{\alpha}$-trehalose, nigerose (E), (Z), kojibiose (E), (Z), gentibiose (E), melibiose (Z), isomaltose (Z) 등과 삼당류 전체로 나타났으며, 실제 벌꿀시료의 분석에서는 TMS-oxime과 TMS-methoxime 당류만으로도 이 삼당류의 정량이 가능하였다. 따라서, 본 연구에서 확립한 분석방법은 몇개의 당류들이 동시 용출 또는 유사한 $t_R$을 가짐으로 해서 분석자체에 애로가 있거나 분석 후 다중회귀분석프로그램과 같은 통계처리 과정을 거쳐야 하는 기존의 분석방법과는 달리, 한 개의 capillary 컬럼과 한가지 GC 온도 프로그래밍 조건으로 크로마토그램 상에서 완전히 분리된 하나의 피크를 정량하는 방법이기 때문에 벌꿀을 연구하는 기관이나 관련 실험실에서 유용하게 사용될 수 있을 것이라 생각된다.

Keywords

References

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