Journal
MICROBIOLOGICAL RESEARCH
Volume 156, Issue 3, Pages 285-288Publisher
URBAN & FISCHER VERLAG
DOI: 10.1078/0944-5013-00106
Keywords
Aureobasidium pullulans; pullulan; immobilization; bioreactor; polysaccharide
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Cells of the fungus Aureobasidium pullulans ATCC 201253 were entrapped within 4% agar cubes or 5% calcium alginate beads and were examined for their production of the polysaccharide pullulan in batch bioreactors. The batch bioreactors were utilized twice for 168 hours of polysaccharide production in medium containing corn syrup as a carbon source. The agar-entrapped cells produced nearly equivalent pullulan concentrations during both production cycles. The alginate-entrapped cells produced higher polysaccharide levels during the second cycle compared to the levels observed during the initial cycle. The agar-entrapped cells elaborated a polysaccharide with a higher pullulan content than did the alginate-entrapped cells during both production cycles.
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