Proceedings of the Korean Institute of Resources Recycling Conference (한국자원리싸이클링학회:학술대회논문집)
- 2001.05b
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- Pages.121-125
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- 2001
Optimization of Food Waste Fermentation for Probiotic Feed Production with Yeast Kluyveromyces marxianus
- Lee, Ki-Young (Food Science & Technology, Natural Science, Hoseo University) ;
- Yu, Sung-Jin (Food Science & Technology, Natural Science, Hoseo University) ;
- Yu, Seung-Yeng (Food Science & Technology, Natural Science, Hoseo University)
- Published : 2001.05.01
Abstract
For the probiotic feed production, aerobic liquid fermentation of pulverized food wastes was attempted with a yeast Kluyveromyces marxianus. After grinding finely, optimal fermentation conditions of the substrate was investigated by shaking culture. The most active growth of the yeast was shown at solid content of 10%. The proper addition of urea(0.5g/l), o-phosphate(0.4g/l), molasses(4g/l), and yeast extract (1g/1) increased cell growth rate and viable cell count. For optimizing, the nutrients were all added to substrate and fermentation was carried in 2 litre jar fermenter. For the stimulation of hydrolyzing enzyme excretion, mixed culture with Aspersillus oryzae was also conducted. In 12 hours of fermentation, viable cell count of the yeast Kluyveromyces marxianus amounted to the number of 1.4