Abstract
The influence of detergent and its components (sodium tripolyphosphate and ethoxylated cetyl oleyl alcohol) at 0.1 % concentration on the enzymatic and metabolic activity of Fusarium oxysporum during exponential growth was investigated in this paper. The fungus Fusarium oxysporum was isolated from wastewater originating from households which contain detergent. The following biochemical parameters were analyzed: pH, redox potential, proteolytic activity, production of carbohydrates, free and total organic acids, proteins and total dry weight biomass. The detergent had influence on the significant decreasing of redox potential, slight increasing of pH and quantity of glucose and total organic acids, while the proteolytic activity was triple insensive in relation to control. The sodium tripolyphosphate had influence on the slight decreasing of pH, significant increasing of redox potential and quantity of glucose and free and total organic acids, whereas the proteolytic activity was intsensive only 5th and 6th day. The total dry weight biomass of the fungus F. oxysporum was slightly inhibited by ethoxylated alcohol but significantly inhibited by detergent and sodium tripolyphosphate.
Highlights
IntroductionThe influence of detergent and its components (sodium tripolyphosphate and ethoxylated cetyloleyl alcohol) at 0.1% concentration on the enzymatic and metabolic activity of Fusarium oxysporum during exponential growth was investigated in this paper
The influence of detergent and its components at 0.1% concentration on the enzymatic and metabolic activity of Fusarium oxysporum during exponential growth was investigated in this paper
The effects of detergent and its main components at a concentration of 0.1% on the metabolism of fungus Fusarium oxysporum are presented on Figs. 1–7
Summary
The influence of detergent and its components (sodium tripolyphosphate and ethoxylated cetyloleyl alcohol) at 0.1% concentration on the enzymatic and metabolic activity of Fusarium oxysporum during exponential growth was investigated in this paper. The detergent had influence on the significant decrease of redox potential, slight increase of pH and quantity of glucose and total organic acids, while the proteolytic activity was triple insensitive in relation to control. The sodium tripolyphosphate had influence on the slight decrease of pH, significant increase of redox potential and quantity of glucose and free and total organic acids, whereas the proteolytic activity was intensive only 5th and 6th day. Chemical surfactants are amphiphilic compounds, which can reduce surface and interfacial tension by accumulating at the interface of immiscible fluids, and increase the solubility and mobility of hydrophobic or insoluble organic compounds [1,2] Their main application is used by the manufacturers of detergents. The fungus was cultivated in the sterile Czapek Dox liquid medium of the following composition (Table 1)
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