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Citation
Tags
HERO ID
999900
Reference Type
Journal Article
Title
Simultaneous use of urea and potassium nitrate for Arthrospira (Spirulina) platensis cultivation
Author(s)
Vieira, DC; Matsudo, MC; Sato, S; Converti, A; de Carvalho, JC
Year
2012
Is Peer Reviewed?
Yes
Journal
Biotechnology Journal
ISSN:
1860-6768
EISSN:
1860-7314
Volume
7
Issue
5
Page Numbers
649-655
Language
English
PMID
21905227
DOI
10.1002/biot.201100203
Web of Science Id
WOS:000303190900015
Abstract
Urea has been considered as a promising alternative nitrogen source for the cultivation of Arthrospira platensis if it is possible to avoid ammonia toxicity; however, this procedure can lead to periods of nitrogen shortage. This study shows that the addition of potassium nitrate, which acts as a nitrogen reservoir, to cultivations carried out with urea in a fed-batch process can increase the maximum cell concentration (X(m) ) and also cell productivity (P(X) ). Using response surface methodology, the model indicates that the estimated optimum X(m) can be achieved with 17.3 mM potassium nitrate and 8.9 mM urea. Under this condition an X(m) of 6077 ± 199 mg/L and a P(X) of 341.5 ± 19.1 mg L(-1) day(-1) were obtained.
Keywords
Arthrospira (Spirulina) platensis; Fed-batch process; Microbial biomass; Potassium nitrate; Urea
Tags
IRIS
•
Ammonia
Literature Search – March 2012 (private)
Literature Search Results
•
Nitrate/Nitrite
Supplemental LitSearch Update 1600-2015
PubMed
WoS
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