Asian-Australasian Journal of Animal Sciences

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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Microencapsulated Iron for Drink Yogurt Fortification

  • Kim, S.J. (Department of Food Science and Technology, Sejong University) ;
  • Ahn, J. (Department of Food Science and Technology, Sejong University) ;
  • Seok, J.S. (Department of Food Science and Technology, Sejong University) ;
  • Kwak, H.S. (Department of Food Science and Technology, Sejong University)
  • Received : 2002.07.15
  • Accepted : 2002.10.05
  • Published : 2003.04.01
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Abstract

This study was designed to examine the effect of icroencapsulated iron fortified drink yogurt and vitamin C as a bioavailable helper of iron on chemical and sensory aspects during 20 d storage. Coating material was polyglycerol monostearate (PGMS), and ferric ammonium sulfate and vit C were selected as core materials. The highest efficiency of microencapsulation of iron and vit C were 73% and 95%, respectively, with 5:1:50 ratio (w/w/v) as coating to core material to distilled water. Iron fortification did not affect the fermentation time required for the drink yogurt to reach pH 4.2. The addition of uncapsulated iron decreased the pH during storage. TBA absorbance was significantly lower in capsulated treatments than in uncapsulated treatments during storage. In sensory aspect, the yogurt sample added with uncapsulated iron and vit C, regardless of capsulation, showed a significantly high score of astringency, compared with those of control and other groups. A significantly strong sourness was observed in treatment containing capsulated iron and uncapsulated vitamin C at every time interval. The present study provides evidence that microencapsulation of iron with PGMS is effective for iron fortification in drink yogurt.

Keywords

References

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