Document Detail

Nitrogen effects on proteins, chlorophylls and fatty acids during the growth of Arthrospira platensis.
MedLine Citation:
PMID:  17722659     Owner:  NLM     Status:  MEDLINE    
Spirulina platensis (=Arthrospira platensis) is a tunisian strain which has been isolated for the first time in Oued Essed (Sousse, Sidi Bou Ali). Biomass evolution, proteins, chlorophylls and fatty acids composition of this alga were monitored by varying nitrogen concentrations in the culture medium. Nitrogen stress was provoked by adding sodium nitrate (NaNO3) in the culture medium with concentrations varying from 0 to 5 g/l. Results obtained showed that nitrogen depletion increased total proteins and total chlorophylls. The addition of NaNO3 (5g/l) led to an increase of total fatty acids amounts and modify fatty acids composition. Optimal quantities of palmitic, gamma -linolenic and oleic acids were obtained with NaNO3 free-cultures. Thus, the tunisian strain has valuable biological substances, worthy to determine the optimal conditions for its propagation.
Samah Ayachi; Amor El Abed; Wissal Dhifi; Brahim Marzouk
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Italian journal of biochemistry     Volume:  56     ISSN:  0021-2938     ISO Abbreviation:  Ital. J. Biochem.     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-08-28     Completed Date:  2007-09-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376564     Medline TA:  Ital J Biochem     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  166-70     Citation Subset:  IM    
Centre de Biotechnologie, Technopole de Borj-Cedria, Unité des Plantes Aromatiques et Médicinales, Tunisie.
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MeSH Terms
Bacterial Proteins / biosynthesis*
Chlorophyll / biosynthesis*
Fatty Acids / biosynthesis*
Nitrates / metabolism,  pharmacology
Nitrogen / metabolism*
Spirulina / growth & development*,  metabolism
Reg. No./Substance:
0/Bacterial Proteins; 0/Fatty Acids; 0/Nitrates; 1406-65-1/Chlorophyll; 7631-99-4/sodium nitrate; 7727-37-9/Nitrogen

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