INFLUENŢA SELENITULUI DE Fe(III) ŞI A INTENSITĂŢII DE ILUMINARE ASUPRA CONŢINUTULUI DE FICOBILIPROTEINE, SELENIU ŞI FIER ÎN BIOMASA CIANOBACTERIEI SPIRULINA PLATENSIS

Valentina BULIMAGA, Liliana ZOSIM, Maria PISOVA, Valeriu RUDIC, Sergiu ŞOVA

Abstract


Productivitatea spirulinei şi onţinutul de fier în biomasă au înregistrat valori mai înalte la iluminare mai intensă (5500 lx), comparativ cu 3500 lx, iar acumularea ficobiliproteinelor în biomasa de spirulină a fost mai semnificativă la 3500 lx. Conţinutul de seleniu acumulat în fracţia de ficobiliproteine a înregistrat valori mai sporite cu majorarea concentraţiei selenitului de fier, fiind maxime la concentraţia acestuia de 45 mg/l la ambele intensităţi de iluminare. La 3500 lx conţinutul de seleniu în extractul sumar de ficobiliproteine a fost de 1,4-1,5 ori mai majorat, comparativ cu cel atestat la 5500 lx.

EFFECTS OF Fe(III) SELENITE AND LIGHT INTENSITY ON THE ACCUMULATION OF PHYCOBILIPROTEINS, SELENIUM AND IRON IN BIOMASS OF CYANOBACTERIUM SPIRULINA PLATENSIS

Spirulina productivity and iron content in biomass recorded higher values at light intensity 5500 lx, compared to 3500 lx, but phycobiliproteins accumulation in spirulina biomass was more significant at 3500 lx. The content of the accumulated selenium in the phycobiliproteins registered the increased values with the increasing of selenite concentra­tion, attesting its maximum value at 45 mg/l, at the both light intensity. Selenium content in the phycobiliproteins at 3500 lx was by 1.4-1.5 times higher, compared to that registered at 5500 lx.


Keywords


Spirulina platensis, selenium, iron, accumulation, phycobiliproteins.

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