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Influence of ammonium sulphate feeding time on fed-batch Arthrospira (Spirulina) platensis cultivation and biomass composition with and without pH control.
MedLine Citation:
PMID:  21507628     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Previous work demonstrated that a mixture of NH(4)Cl and KNO(3) as nitrogen source was beneficial to fed-batch Arthrospira (Spirulina) platensis cultivation, in terms of either lower costs or higher cell concentration. On the basis of those results, this study focused on the use of a cheaper nitrogen source mixture, namely (NH(4))(2)SO(4) plus NaNO(3), varying the ammonium feeding time (T=7-15days), either controlling the pH by CO(2) addition or not. A. platensis was cultivated in mini-tanks at 30°C, 156μmolphotonsm(-2)s(-1), and starting cell concentration of 400mgL(-1), on a modified Schlösser medium. T=13days under pH control were selected as optimum conditions, ensuring the best results in terms of biomass production (maximum cell concentration of 2911mgL(-1), cell productivity of 179mgL(-1)d(-1) and specific growth rate of 0.77d(-1)) and satisfactory protein and lipid contents (around 30% each).
Authors:
Mayla Santos Rodrigues; Lívia Seno Ferreira; Attilio Converti; Sunao Sato; João Carlos Monteiro de Carvalho
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-1
Journal Detail:
Title:  Bioresource technology     Volume:  -     ISSN:  1873-2976     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
Department of Biochemical and Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, University of São Paulo, Av. Prof. Lineu Prestes, 580, B-16, 05508-900 São Paulo - SP, Brazil; Department of Chemical and Process Engineering "G. B. Bonino", University of Genoa, Via Opera Pia, 15, 16145 Genoa, Italy.
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