Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Development of Water Soluble Tocopherol Emulsion Using Surfactants

계면활성제를 이용한 수분산 Tocopherol 유화물의 개발

  • Published : 2008.11.28
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Abstract

This study was carried out to make water-soluble tocopherol emulsion which can be applicable directly in water. The molecular weight of tocopherol was 340 to 360 and tocopherol emulsion model was decided as O/O/W/W type. In correlation between stability of emulsion and surface tension, the stability in surface tension of emulsion was from 40 to 46 dyne/cm. In the case of lower than 40 dyne/cm of surface tension, the stability of the emulsion was lower. Lipophilic surfactants, especially for a polyglycerine polyricinoleate in 20%, 30% and 40% tocopherol emulsion, was the most effective in emulsion stability. A higher stability of the emulsion among hydrophilic surfactants in the tocopherol emulsion was obtained in the following order; polyglycerine monostearate> polyglycerine monooleate> polyoxyethylene (20) sorbitan monooleate$\geq$ polyoxyethylene (20) sorbitan monolaurate.

지용성의 토코페롤이 갖고 있는 많은 생리활성 기능을 수용액 상태에서도 발현할 수 있도록 유지 용해성을 갖는 토코페롤을 친수성 및 친유성 계면활성제를 이용하여 수분산 기법으로 최적의 토코페롤 유화액을 제조하고 최적의 유화 critical micellization concentration(CMC)을 선정하고자 표면장력 및 유화액의 저장안정성을 측정하였다. 실험에 사용한 토코페롤의 분자량은 $340{\sim}360$ 정도였으며 유화모델은 O/O/W/W형으로 선정하였다. 유화안정성과 표면장력과의 상관관계를 살펴보면, 유화액의 표면장력이 $40{\sim}46\;dyne/cm$에서 안정성을 확인할 수 있었으며, 표면장력이 40 dyne/cm이하로 떨어졌을 경우에는 유화안정성이 낮아졌다. 토코페롤의 유화안정성 실험 결과, 20%, 30%, 40% 수용성 토코페롤 유화액 모두에서 hydrophobic 계통의 유화제로 polyglycerine polyricinoleate를 적용한 유화 에멀젼에서 유화안 정성이 높았으며, hydrophilic 계통의 유화제에서는 polyglycerine monostearate> polyglycerine monooleate> polyoxyethylene(20) sorbitan monooleate$\geq$ polyoxyethylene(20) sorbitan monolaurate 순으로 유화안정성을 나타내었다.

Keywords

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