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ISSN Печать: 1521-9429
ISSN Онлайн: 1940-4328
Indexed in
Influence of ethanol on metabolism of algae. Growth dynamics, content of nucleic acids, proteins, and lipids in Chlorella vulgaris Beijer and Spirulina platensis (Nordst.) Geitl. cells
Краткое описание
The introduction of ethanol into the culture medium for Chlorella vulgaris Beijer up to final concentrations of 0.1, 0.3, 0.5, and 0.7 % on the fourth day of growth was found on the ninth day to increase the cell biomass 4.3, 9.0, 7.5, and 5.4 times, respectively, as compared with the control. An S-shaped dose-dependence was observed. The 0.3, 0.5, and 0.7 % concentration of ethanol in the culture medium enhanced the content of protein in cells 1.6, 3.0, and 1.9 times. In this case protein excretion into the medium was twice as high irrespective of the alcohol concentration in the medium. The introduction of ethanol at concentrations of 0.1, 0.3, 0.5, and 0.7 % caused no onsistent changes in the content of triacylglycerides in the Ch. vulgaris cells and decreased the content of non-esterified fatty acids 1.4, 1.9, 1.7, and 1.9 times, respectively. The employment of radioactively labeled alcohol at 0.3 % concentration showed that carbon composing ethanol was incorporated into the composition of DNA and RNA, and to a lesser extent into the composition of the proteins and lipids of the Ch. vulgaris cells. This attests that alcohol has a trophic function in Ch. vulgaris cells. As to the blue-green algae (Spirulina platensis (Nordst.) Geitl.), ethanol is highly toxic and not subjected to cell metabolism.
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Bezerra Raquel P, Matsudo Marcelo C, Pérez Mora Lina S, Sato Sunao, de Carvalho João C Monteiro, Ethanol effect on batch and fed-batch Arthrospira platensis growth, Journal of Industrial Microbiology and Biotechnology, 41, 4, 2014. Crossref
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Matsudo Marcelo C., Moraes Fabio A., Bezerra Raquel P., Arashiro Renata E., Sato Sunao, Carvalho João Carlos M., Use of acetate in fed-batch mixotrophic cultivation of Arthrospira platensis, Annals of Microbiology, 65, 3, 2015. Crossref
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Miazek Krystian, Kratky Lukas, Sulc Radek, Jirout Tomas, Aguedo Mario, Richel Aurore, Goffin Dorothee, Effect of Organic Solvents on Microalgae Growth, Metabolism and Industrial Bioproduct Extraction: A Review, International Journal of Molecular Sciences, 18, 7, 2017. Crossref
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