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http://dx.doi.org/10.5352/JLS.2005.15.3.337

Affection of Citric Acid Production from Tapioca Alcoholic Distillery Waste by Using the Cell of Aspergillus niger  

Lee Yong-Hee (Research Institute of Basic Science & Department of Chemistry, Dongeui University)
Lee Dong-Hwan (Research Institute of Basic Science & Department of Chemistry, Dongeui University)
Chung Kyung-Tae (Life Science and Biotechnology Major, Dongeui University)
Suh Myung-Gyo (Department of Medical Administration, Dongeui Institute of Technology)
Roh Jong-Su (Department of Medical Administration, Dongeui Institute of Technology)
Lee Kook-Eui (Department of Medical Administration, Dongeui Institute of Technology)
Publication Information
Journal of Life Science / v.15, no.3, 2005 , pp. 337-343 More about this Journal
Abstract
Tapioca alcoholic distillery waste was utilized as dual purposes to produce citric acid and to reduce the amount of waste to be treated. Primarily an attempt was made to optimize the process conditions by Aspergillus niger in shake bath. The effects of pH, temperature, nitrogen and phosphorus sources on citric acid production were investigated. Maximum concentration of citric acid was made at temperature of $30^{\circ}C$ and pH of 4.3, while maximum cell dry weight was obtained at $35^{\circ}C$. The addition of methanol or ethanol to culture medium promoted citric acid production remarkably, but the addition of $NH_4NO_3,\;KH_2PO_4$ and Manganese as mineral source decreased the acid production.
Keywords
Tapioca alcoholic distillery waste; citric acid production; Aspergillus niger;
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