Abstract
This study evaluated the growth and metabolic activity of consortium and pure cultures Fusarium lateritium LP7 and Trichoderma viride LP5 in response to the presence of 0.5% ethoxylated oleyl-cetyl alcohol (EOCA) in the liquid Czapek-Dox medium. The effectiveness of mentioned cultures was monitored according to the following parameters: biomass dry weight (BDW), pH, quantity of free and total organic acids, proteolytic activity and the qualitative composition of carbohydrates, during 19 days. The biodegrading efficiency was determined spectrophotometrically. The BDW of consortium was significantly stimulated by EOCA (16.59%) whereas biomass of LP7 was significantly inhibited (30.61%). The EOCA had influence on decrease in pH value of the media of LP5 and consortium, and pH changes were correlated with the amount of excreted organic acids. The alkaline protease activities of consortium, LP7 and LP5 retained 73%, 62.2% and 49.5% activity respectively in the presence of EOCA. Consortium has shown the best biodegradation capacity up to 82% of EOCA. The pure cultures were less effective in biodegradation and removed approximately 65% (LP7) and 60% (LP5) of EOCA after 19 days. In brief, the synergistic interaction between pure cultur...Continue Reading
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