Abstract

In this work, have been presented results of bio productivity study and quantity of formed MDA in Dunaliella cells at high salinity in optimal and low-temperature cultivation conditions. It became clear that, in conditions of low temperature stress, bioproductivity of cells decreases 25% in regard to optimal cultivating regime. The cell modification by 2,6 di-tret-butyl cresol (ionol) leads to growth stimulation of Dunaliella culture in optimal regime: (25-350mkM) 2-7% respectively, and in conditions of low temperature stress in range of concentrations (25-350mkM) 5-8%. It was established that, the concentrations 25-50mkm 2,6 di-tret-butyl cresol in mineral medium cause 30-70% increase of MDA content in cells and then 35-60% decrease of its content at concentrations 15-300mkm in optimal regime. In low temperature regime concentrations 25-50mkm of BHT, MDA quantity remains in control, but at concentrations 15-300mkm decreases 4-20%.

Keywords: Dunaliella; Bioproductivity; Salinity; Ionol; Low temperature stress; Lipid peroxidation