Production of citric acid by immobilized dried reactivatedAspergillus niger |
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Authors: | H. Hamamci Y. D. Hang |
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Affiliation: | (1) Food Engineering Department, Middle East Technical University, Ankara, Turkey;(2) Department of Food Science and Technology, Cornell University, 14456 Geneva, NY, USA |
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Abstract: | Summary Immobilization followed by drying was fried as a new technique for obtaining small beads which might be more suitable for industrial fermentations and for the storage of the immobilized microorganisms.Aspergillus niger NRRL 2270 was used to produce citric acid in free, immobilized, and immobilized dried reactivated (IDR) forms. The productivity based on the bead volume used increased several folds with the use of IDR cells although the absolute level of citric acid did not increase. |
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