Proceedings of the Korean Environmental Health Society Conference (한국환경보건학회:학술대회논문집)

Korean Society of Environmental Health (한국환경보건학회)
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The continuous citric acid production from milk-wastewater used the immobilized Aspergillus niger

  • Lee, Yong-Hee (Research Institute for Basic Science, Dongeui University) ;
  • Roh, Jong-Su (Research Institute for Basic Science, Dongeui University) ;
  • Suh, Myung-Gyo (Research Institute for Basic Science, Dongeui University) ;
  • Roh, Ho-Seok (Dept. of R&D, Whachang Food Co., Ltd.) ;
  • Suh, Jung-Ho (Dept. of Environment & Precision Chemistry, Ulsan College)
  • Published : 2003.06.01
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Abstract

The study was carried out immobilized Aspergillus niger used of milk-wastewater. The purpose of investigation is to optimize the ermentational conditions of milk-wastewater The optimal pH, temperature and dilution rate were 3.0, 30$^{\circ}C$ and 0.025 h$\^$-1/. The maximum amount and yield of citric acid produced by immobilizes Aspergillus niger ATCC 9142 were 4.5g/1 and 70.3%. Compared to shake-flask culture, yield was increased about 20%.

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