Asian-Australasian Journal of Animal Sciences

  • 제16권7호
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  • Pages.1011-1014
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  • 2003
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  • 1011-2367(pISSN)
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  • 1976-5517(eISSN)
아세아태평양축산학회 (Asian Australasian Association of Animal Production Societies)
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Factors Affecting Oxygen Uptake by Yeast Issatchenkia orientalis as Microbial Feed Additive for Ruminants

  • Lee, J.H. (Institute of Life Science and Technology, Sungkyunkwan University) ;
  • Lim, Y.B. ;
  • Park, K.M. (Department of Food and Life Science, Faculty of Life Science and Technology, Sungkyunkwan University) ;
  • Lee, S.W. (Department of Food and Life Science, Faculty of Life Science and Technology, Sungkyunkwan University) ;
  • Baig, S.Y. (Department of Food and Life Science, Faculty of Life Science and Technology, Sungkyunkwan University) ;
  • Shin, H.T. (Department of Food and Life Science, Faculty of Life Science and Technology, Sungkyunkwan University)
  • 투고 : 2002.12.17
  • 심사 : 2003.04.21
  • 발행 : 2003.07.01
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초록

The objective of this work was to evaluate a thermotolerant yeast Issatchenkia orientalis DY252 as a microbial feed additive for ruminants. In the present study, the influence of volatile fatty acids (VFA) and temperature on oxygen uptake rate by I. orientalis DY 252 was investigated. It was evident that the oxygen uptake rate was decreased gradually as the VFA concentrations increased in a range of 30 to 120 mM. Although the oxygen uptake rate was not greatly affected by temperature in the range 37 to $43^{\circ}C$, a maximum value of $0.45mg\;O_2/g$ cell/ min was obtained at $39^{\circ}C$. With regard to the oxygen uptake rate by yeast, viability was found to be less important than the metabolic activity of yeast.

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참고문헌

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