Repeated-batch production of pigments by immobilised Monascus purpureus.
Extracellular pigment production by immobilised Monascus purpureus C322 has been studied in repeated-batch processes using different immobilising carriers such as Ca-alginate, polyurethane sponge, active carbon and pearlite. With Ca-alginate, pigment production was maximum (30.5 UA470 as process mean production, three batches) while the cell leakage was negligible (0.4 g 1(-1) free biomass) and the bead mechanical stability good; with this carrier, an extended repeated-batch fermentation (nine batches, 55 days) was carried out: the process pigment productivity was 3.87 UA470 day(-1).
Fenice
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M
Dipartimento di Agrobiologia ed Agrochimica, University of Tuscia, Viterbo, Italy.
Federici
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F
Selbmann
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L
Petruccioli
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M
D000464:Alginates; D001709:Biotechnology / Q000379:methods; D018914:Cells, Immobilized / Q000378:metabolism*; D005285:Fermentation; D005505:Food Coloring Agents; D010860:Pigments, Biological / Q000096:biosynthesis*; D015003:Yeasts / Q000166:cytology* / Q000378:metabolism*
D000464:Alginates; D005505:Food Coloring Agents; D010860:Pigments, Biological