title: Chlorophylls, proteins and fatty acids amounts of arthrospira platensis growing under saline conditions.
abstract: Spirulina platensis (Arthrospira platensis) is a Tunisian strain isolated for the first time, in Tunisia, in Oued Essed (Sidi Bou Ali, in Sousse region). Evolution of biomass, proteins, chlorophylls and fatty acids (FA) has been followed during Spirulina growth. Experiments were carried out by varying sodium chloride concentrations in the culture medium in a range from 1 g L(-1) (natural environment) to 60 g L(-1). Results analysis showed an increase in chlorophyll amounts at 15 g L(-1) NaCl in 10 days old cultures but a decrease at high NaCl concentrations. Optimal proteins amounts was observed at 15 g L(-1) NaCl in young cultures (5 and 10 days). FA composition was modified by NaCl and depended on culture age. Cultures exposed to high salinity concentrations showed not only a decrease in growth rate but also a loss in total fatty acids TFA quantities. Samples cultured over 15 days at 30 g L(-1) NaCl rendered optimal quantities of lipids and gamma-linolenic acid.
authors.affiliation: Unité des Plantes Aromatiques et Médicinales, Centre de Biotechnologie, Technopole de Borj-Cedria, BP 901, 2050 Hammam-Lif, Tunisie.
authors.forename: Samah
authors.initials: S
authors.lastname: Ayachi
authors.forename: Amor
authors.initials: A
authors.lastname: El Abed
authors.forename: Wissal
authors.initials: W
authors.lastname: Dhifi
authors.forename: Brahim
authors.initials: B
authors.lastname: Marzouk
mesh_terms: D002734:Chlorophyll / Q000378:metabolism*; D002849:Chromatography, Gas; D005227:Fatty Acids / Q000378:metabolism*; D010940:Plant Proteins / Q000378:metabolism*; D012965:Sodium Chloride / Q000737:chemistry*; D053545:Spirulina / Q000254:growth & development / Q000378:metabolism*
chemical_list: D005227:Fatty Acids; D010940:Plant Proteins; D002734:Chlorophyll; D012965:Sodium Chloride