THE INFLUENCE OF SOME Ca(II) AND BA(II) WITH Co(II) COMPOUNDS ON THE PRODUCTIVITY OF THE CYANOBACTERIA SPIRULINA PLATENSIS

Abstract

The article includes experimental results related to the productivity of the Spirulina platensis (Nordst.) Geitl - CALU - 835 strain, which was cultivated for 8 days on modified nutrient media supplemented with two coordination compound containing Ca and Ba. A greater amount of biomass was recorded when growing spirulina on the Zarrouk culture medium supplemented with these coordination compound in a concentration of 5 mg/L, accumulating a fresh biomass of about 13,3 g/L and 12,8 g/L, respectively, or about 14,5% and 9,9% higher than that accumulated by the witness.Articolul include rezultate experimentale ce ţin de productivitatea tulpinii Spirulina platensis (Nordst.) Geitl – CALU – 835, care a fost cultivată timp de 8 zile pe medii nutritive modificate şi suplinite cu doi compuşi coordinativi cu conţinut de Ca şi Ba. O cantitate mai mare de biomasă s-a înregistrat la cultivarea spirulinei pe mediul de cultură Zarrouk suplimentat cu aceşti compuşi coordinativi în concentraţie de 5 mg/L, acumulând o biomasă proaspătă de circa 13,3 g/L şi 12,8 g/L respectiv, sau cu circa 14,5% şi 9,9% mai mare decât cea acumulată de către martor.