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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effects of light intensity and dilution rate on the semicontinuous cultivation of Arthrospira (Spirulina) platensis. A kinetic Monod-type approach

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Author(s):
Bezerra, Raquel Pedrosa [1, 2] ; Ortiz Montoya, Erika Yuliana [1, 2] ; Sato, Sunao [2] ; Perego, Patrizia [1] ; Monteiro de Carvalho, Joao Carlos [2] ; Converti, Attilio [1]
Total Authors: 6
Affiliation:
[1] Univ Genoa, Dept Chem & Proc Engn GB Bonino, I-16145 Genoa - Italy
[2] Univ Sao Paulo, Dept Biochem & Pharmaceut Technol, Fac Pharmaceut Sci, BR-05508900 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Bioresource Technology; v. 102, n. 3, p. 3215-3219, FEB 2011.
Web of Science Citations: 20
Abstract

Semicontinuous cultures were carried out at different dilution rates (D) and light intensities (I) to determine the maximum productivity of Arthrospira platensis cultivated in helicoidal photobioreactor up to the achievement of pseudo-steady-state conditions. At I = 108 mu mol photons m(-2) s(-1), the semicontinuous regime ensured the highest values of maximum cell concentration (X(m) = 5772 +/- 113 mg L(-1)) and productivity (P(XS) = 1319 +/- 25 mg L(-1) d(-1)) at the lowest (D = 0.1 day(-1)) and the highest (D = 0.3 day(-1)) dilution rates, respectively. A kinetic model derived from that of Monod was proposed to determine the relationship between the product of light intensity to dilution rate (ID) and the cell productivity, which were shown to exert a combined influence on this parameter. This result put into evidence that pseudosteady-state conditions could be modified according to circumstances, conveniently varying one or other of the two independent variables. (C) 2010 Elsevier Ltd. All rights reserved. (AU)