Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Preparation of γ-oryzanol-loaded pectin micro and nanocapsules and their characteristics according to particle size

감마오리자놀 함유 칼슘-펙틴 미세 및 나노캡슐의 제조와 입자 크기에 따른 캡슐특성

  • Lee, Seul (Department of Food and Nutrition, Hanyang University) ;
  • Kim, Eun Suh (Department of Food and Nutrition, Hanyang University) ;
  • Lee, Ji-Soo (Department of Food and Nutrition, Hanyang University) ;
  • Lee, Hyeon Gyu (Department of Food and Nutrition, Hanyang University)
  • 이슬 (한양대학교 식품영양학과) ;
  • 김은서 (한양대학교 식품영양학과) ;
  • 이지수 (한양대학교 식품영양학과) ;
  • 이현규 (한양대학교 식품영양학과)
  • Received : 2016.09.07
  • Accepted : 2016.11.12
  • Published : 2017.02.28
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Abstract

${\gamma}-Oryzanol-loaded$ calcium-pectin micro- and nanocapsules were prepared by ionic gelation to improve oxidation stability and the effect of particle size on capsule properties was investigated. The physical properties were influenced by preparation conditions such as concentrations of pectin, $CaCl_2$, ${\gamma}-oryzanol$, and hardening time. Particle sizes of micro- and nanocapsules that showed the maximum encapsulation efficiency and sustained release were $2.27{\pm}0.02mm$ and $347.7{\pm}58.1nm$, respectively. Microcapsules showed higher encapsulation efficiency ($50.73{\pm}1.98%$) than nanocapsules ($17.70{\pm}2.04%$), while nanocapsules showed more sustained release and higher stability than microcapsules. Release of ${\gamma}-oryzanol$ from both microand nanocapsules, which was low in gastric environments and promoted in intestinal environments, showed suitable characteristics for oral administration. Furthermore, antioxidant activity of ${\gamma}-oryzanol$ against autoxidation of linoleic acid was prolonged by both micro- and nanoencapsulation in a ferric thiocyanate test. Therefore, micro- and nanoencapsulation using pectin can be effective for improving biodelivery, stability, and antioxidant activity of ${\gamma}-oryzanol$.

감마오리자놀의 산화안정성을 증진시키기 위해 천연 다당류인 펙틴과 칼슘이온의 이온결합을 이용한 펙틴 겔 미세캡슐과 나노캡슐을 제조하였다. 캡슐의 입자특성은 펙틴, 염화칼슘, 감마오리자놀 농도와 경화시간 변화에 영향을 받았으며, 포집 효율과 방출 조절 측면에서 가장 효과적이었던 펙틴 2%, 염화칼슘 4%, 경화시간 60분에서 제조한 미세캡슐과 펙틴 0.05%, 염화칼슘 4%, 감마오리자놀 5%에서 제조한 나노캡슐을 선정하였다. 입자 크기에 따른 두 캡슐 제형에 대한 비교분석 결과, 감마오리자놀 포집 효율은 입자 크기 증가로 인한 내부 포집공간 증가로 미세캡슐에서 더 높게 나타났으며, 이는 유효량 섭취의 효율측면에서 경구투여에 적합한 것으로 판단되었다. 감마오리자놀 함유 펙틴 캡슐 모두가 산성에서 방출이 억제되고 중성으로 갈수록 방출이 촉진되어 체내 소화환경에서 효과적인 전달체의 특성을 보였으며, 미세캡슐에 비해 나노캡슐의 방출 조절이 더 효과적으로 나타나 감마오리자놀의 장기 저장과 활성유지에 더 적합한 것으로 판단되었다. FTC법을 통한 지질산화 저해능 평가에서는 저장 5일 이후 유리 감마오리자놀의 산화방지 활성이 감소한 데 반해 감마오리자놀 함유 미세와 나노캡슐은 지속적인 지방산화 억제활성을 지속적으로 유지하였다. 본 연구를 통해 미세와 나노캡슐화는 감마오리자놀의 안정성 및 지질산화 활성 증대에 효과적이며, 제형 특성에 따라 다양한 용도로 활용 될 수 있을 것으로 판단된다.

Keywords

References

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