Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Study of Stabilizing 5,6-dihydroxyindole with Coating Process Against Oxidation and Light

코팅프로세스를 사용한 5,6-디하이드록시인돌의 산화 및 광에 대한 안정화 연구

  • Han, Sang-Keun (Department of Industrial Engineering Chemistry, College of Engineering, Chungbuk National University) ;
  • Lee, Dong-Kyu (Department of Industrial Engineering Chemistry, College of Engineering, Chungbuk National University)
  • 한상근 (충북대학교 공과대학 공업화학과) ;
  • 이동규 (충북대학교 공과대학 공업화학과)
  • Received : 2013.08.19
  • Accepted : 2013.09.26
  • Published : 2013.09.30
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Abstract

5,6-dihydroxyindole was easily oxidation with air and light Conditions. Availability of 5,6-dihydroxyindole was studied for hair dye as a precursor of melanin. This study used wet and dry coating process to stabilize 5,6-dihydroxyindole. In wet process used dimethicone and cyclometicone, the 5,6-dihydroxyindole had darkened through the drying process at $58^{\circ}C$. Wet coating process was inappropriate to stabilize the coating. In dry coating process, shea butter coating was stable until 3 days. Dextrin palmitate was most efficient ingredient to prevent oxidation by sun light and air until 7days. Oxidation test with 1.0% and 1.5% of dextrin palmitate was not different under conditions of sun light and air and was not dependent on contents. Vitamin E acetate under conditions of sun light and air, there were no significant effect in preventing oxidation.

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References

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