Mixotrophic productivity of the marine diatom Phaeodactylum tricornutum cultured with soluble fractions of rye,wheat and potato |
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Authors: | Fa´bregas J Morales ED Lamela T Cabezas B Otero A |
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Institution: | (1) Departmento de Microbiologi´a, Facultad de Farmacia, Universidad de Santiago, 15706, Santiago, Spain;(2) Departmento de Biologi´a, Facultad de Ciencias, Universidad del, Zulia, Venezuela |
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Abstract: | The marine microalga Phaeodactylum tricornutum was cultured semi-continuously with the soluble fractions of wheat, rye and boiled potato flours. Fifteen percent of the culture volume was renewed every 3 d. The cell productivities were 0.9×109 cells/l/d, 1.1×109 cells/l/d and 2.6×109 cells/l/d for wheat, rye and potato respectively. The productivity of the autotrophic control was 1.0×109 cell/l/d. When a soluble fraction of raw potato was added, the productivity was enhanced to 4.1×109 cells/l/d, 2.4 times higher than the autotrophic culture. The high productivity of P. tricornutum with the soluble fractions of Solanum tuberosum suggests its usefulness as a source of nutrients for the production of microalgal biomass. |
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Keywords: | Flour mixotrophic productivity Phaeodactylum tricornutum potato rye wheat |
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