Optimization of Conditions for the Preparation of W/O Emulsion Containing Eugenolchitosan

Eugenolchitosan 함유 유중수적형 유화 형성 조건 최적화

  • Kim, Je-Jung (Department of Life Science, Konkuk University) ;
  • Chang, Pahn-Shick (Department of Food Science and Technology, Seoul National University of Technology) ;
  • Jung, Byung-Ok (Department of Food Science and Technology, Seoul National University of Technology) ;
  • Park, Dong-Ki (Department of Applied Biology and Chemistry, Konkuk University)
  • 김제중 (건국대학교 생명과학과) ;
  • 장판식 (서울산업대학교 식품공학과) ;
  • 정병옥 (서울산업대학교 식품공학과) ;
  • 박동기 (건국대학교 응용생물화학과)
  • Published : 2003.06.01


Stabilities of W/O emulsions containing eugenolchitosan (EuCs) prepared from chitosan and eugenol were compared to determine the optimal conditions for the ratio of water (core phase) to corn oil (continuous phase), the concentration of EuCs, storage temperature, and the extent of homo-mixing. The optimal ratio of water to corn oil was 2:3 (w/w). The effects of EuC concentrations, and singular vs. binary system of emulsifiers on the storage stability of the emulsion were investigated with EuCs and polyoxyethylene sorbitan monolaurate. The emulsion was stable, showing more than 95% emulsion stability index (ESI) value, when the concentration of EuCs was more than 0.18% (w/v). ESI value of binary emulsifier system was almost equal to that of singular emulsifier system at the concentration of 0.18% (w/v). At this singular emulsifier system, the W/O emulsion formed by EuCs had ESI value of 100%. The optimal concentration of EuCs was determined as 0.18% (w/v). The highest stability of the emulsion was obtained from the homo-mixing at 11,000 rpm for 10 sec and the storage temperature ranging $25{\sim}65^{\circ}C$. EuCs produced from this study was mutagenecity-negative on Ames test and contained no heavy metal ions.


chitosan;eugenolchitosan;emulsion stability index


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