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  • Title: Continuous production of lactosucrose by immobilized Sterigmatomyces elviae mutant.
    Author: Lee JH, Lim JS, Park C, Kang SW, Shin HY, Park SW, Kim SW.
    Journal: J Microbiol Biotechnol; 2007 Sep; 17(9):1533-7. PubMed ID: 18062233.
    Abstract:
    In this study, in order to develop a continuous production process of lactosucrose in a packed-bed reactor, Sterigmatomyces elviae ATCC 18894 was selected and mutated. The mutant strain of S. elviae showed 54.3% higher lactosucrose production than the wild type. Reaction conditions such as temperature, pH, substrate concentration and flow rate were also optimized. Under optimized reaction conditions (50 degrees C, pH 6.0, 25% sucrose and 25% lactose as substrate, flow rate 1.2 ml/min), the maximum concentration of lactosucrose (192 g/l) was obtained. In a packed-bed reactor, continuous production of lactosucrose was performed using S. elviae mutant immobilized in calcium alginate, and about 180 g/l of lactosucrose production was achieved for 48 days.
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