한국식품과학회지 (Korean Journal of Food Science and Technology)

한국식품과학회 (Korean Society of Food Science and Technology)
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사이클로덱스트린과 전분을 이용한 coenzyme Q10 복합체의 특성 연구

Structural and Solubility Characteristics of Coenzyme Q10 Complexes Including Cyclodextrin and Starch

  • 이준경 (한국산업기술대학교 생명화학공학과) ;
  • 이현주 (한국산업기술대학교 생명화학공학과) ;
  • 임재각 (한국산업기술대학교 생명화학공학과)
  • Lee, Joon-Kyoung (Department of Biological Science and Chemical Technology, Korea Polytechnic University) ;
  • Lee, Hyun-Joo (Department of Biological Science and Chemical Technology, Korea Polytechnic University) ;
  • Lim, Jae-Kag (Department of Biological Science and Chemical Technology, Korea Polytechnic University)
  • 투고 : 2013.06.09
  • 심사 : 2013.12.14
  • 발행 : 2014.04.30
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초록

본 실험에서는 coenzyme $Q_{10}$을 cyclodextrin, starch를 이용하여 각각 복합체를 형성하고 형성된 복합체의 용해도 및 구조적 특성을 확인하였다. Starch 복합체는 용해 온도가 증가할수록 복합체 및 복합체내의 coenzyme $Q_{10}$의 용해도가 유의적으로 증가하는데 비해 cyclodextrin 복합체는 $37^{\circ}C$에서 coenzyme $Q_{10}$의 최대 용해도를 보였으며 이후 $50^{\circ}C$에서는 강하게 aggreagation이 일어났고, $80^{\circ}C$에서는 약해진 결합에 의해 복합체가 깨짐으로써 coenzyme $Q_{10}$이 물 위에 뜨는 형상을 나타내었다. 두 복합체의 구조적 차이를 FT-IR, XRD, DSC를 통하여 확인한 결과 cyclodextrin 복합체는 coenzyme $Q_{10}$의 isoprenoid chain에 주로 포접이 되어 있는데 반해 starch 복합체는 coenzyme $Q_{10}$의 isoprenoid chain 뿐만 아니라 benzoquinone ring에도 포접되어 있는 것을 확인하였고, 또한 starch 복합체가 cyclodextrin 복합체에 비해 coenzyme $Q_{10}$ 무정형영역이 더 크게 증가되어 있는 것을 확인하였다. In vitro simulated digestion model을 통하여 각 소화기관 별 복합체의 방출 패턴을 확인 한 결과 두 복합체 모두 구강, 위장의 효소 및 조건에 비해 소장의 효소와 조건에서 유의적으로 크게 coenzyme $Q_{10}$의 방출이 확인되었다. 따라서 coenzyme $Q_{10}$은 cyclodextrin, starch와 포접되어 복합체를 형성함으로서 생체이용율의 향상을 기대할 수 있다.

This study focused on assessing the solubility and structural characteristics of two types of coenzyme $Q_{10}$ ($CoQ_{10}$) complexes: the $CoQ_{10}$-starch and the $CoQ_{10}$-cyclodextrin complexes. The solubility of $CoQ_{10}$-starch complex increased significantly as the temperature was increased. However, the solubility of $CoQ_{10}$-cyclodextrin complex reached a peak at $37^{\circ}C$, and strong aggregation occurred at $50^{\circ}C$. When the temperature was raised to $80^{\circ}C$, the $CoQ_{10}$-cyclodextrin complex dissociated owing to the weakening of bonds, resulting in $CoQ_{10}$ emerging at the surface of water. Therefore, $CoQ_{10}$-cyclodextrin complexes have lower solubility, due to their reduced heat-stability, than do the $CoQ_{10}$-starch complexes. Structural differences between the two $CoQ_{10}$ complexes were confirmed by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffractometer (XRD), and differential scanning calorimeter (DSC). The $CoQ_{10}$-cyclodextrin complex included an isoprenoid chain of $CoQ_{10}$, while the $CoQ_{10}$-starch complex included both the benzoquinone ring and the isoprenoid chain of $CoQ_{10}$. These results suggest that $CoQ_{10}$-starch complexes possess higher heat-stability and solubility than do the $CoQ_{10}$-cyclodextrin complexes.

키워드

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