Co-production of carotenoids and xylitol by Xanthophyllomyces dendrorhous (Phaffia rhodozyma) |
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Authors: | J.C. Parajo V. Santos M. Vazquez |
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Affiliation: | (1) Department of Chemical Engineering, University of Vigo (Campus Orense), Faculty of Science, Las Lagunas, 32004 Orense, Spain |
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Abstract: | Carotenoid production by Xanthophyllomyces dendrorhous (formerly Phaffia rhodozyma) when growing on xylose depended on the initial substrate concentration. Astaxanthin was the main carotenoid, others were echinenone, 3-hydroxyechinenone and canthaxanthin. Xylitol (an intermediate of xylose metabolism, with application as sweetener) accumulates in the fermentation media. Xylitol concentrations up to 22 g/l were obtained in experiments carried out with an initial xylose concentration of 42 g/l. Xylitol was assimilated after xylose depletion. |
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