<abstract xmlns="http://www.w3.org/1999/xhtml">The properties of nanoparticles have been used in a wide range of potential applications in food industry, medicine, microbial biotechnology, cosmetics, environmental production. Research results of evaluation of the effect of Fe3O4 and TiO2 nanoparticles applicated in large concentration limits on some parameters of pigmented yeast strain <italic>Rhodotorula gracilis</italic> CNMN-Y-30 are presented in this paper. It was established that nanoparticles selected for study caused toxic effects on β-caroten accumulation and activity of antioxidant enzyme catalase depending on concentration and nanostructure. The strong correlation between concentration of nanoparticles and evaluated components has been revealed at studied yeast strain. Coefficients of correlation varied in limits R2 = 0.623... 0.951. For the first time, the determination of β-carotene accumulation and catalase activity rate as functional tests for estimation of toxicity of nanoparticles for pigmented yeast strain <italic>Rhodotorula gracilis</italic> was effectuated. Thus, it was established that adaptive response of yeast strain to the presence of Fe3O4 and TiO2 nanoparticles has been manifested by modification of the processes of β-carotene biosythesis and catalase activity.</abstract>

The properties of nanoparticles have been used in a wide range of potential applications in food industry, medicine, microbial biotechnology, cosmetics, environmental production. Research results of evaluation of the effect of Fe3O4 and TiO2 nanoparticles applicated in large concentration limits on some parameters of pigmented yeast strain Rhodotorula gracilis CNMN-Y-30 are presented in this paper. It was established that nanoparticles selected for study caused toxic effects on β-caroten accumulation and activity of antioxidant enzyme catalase depending on concentration and nanostructure. The strong correlation between concentration of nanoparticles and evaluated components has been revealed at studied yeast strain. Coefficients of correlation varied in limits R2 = 0.623... 0.951. For the first time, the determination of β-carotene accumulation and catalase activity rate as functional tests for estimation of toxicity of nanoparticles for pigmented yeast strain Rhodotorula gracilis was effectuated. Thus, it was established that adaptive response of yeast strain to the presence of Fe3O4 and TiO2 nanoparticles has been manifested by modification of the processes of β-carotene biosythesis and catalase activity.

Effect of Fe3O4 and TiO2 Nanoparticles on Catalase Activity and β-Carotene Content at Pigmented Yeast Strain <italic>Rhodotorula gracilis</italic>

Institute of Microbiology and Biotechnology of Academy of Sciences of Moldova

Acta Universitatis Cibiniensis. Series E: Food Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Effect of FeO and TiO Nanoparticles on Catalase Activity and β-Carotene Content at Pigmented Yeast Strain 

The properties of nanoparticles have been used in a wide range of potential applications in food industry, medicine, microbial biotechnology, cosmetics,...

Effect of Fe₃O₄ and TiO₂ Nanoparticles on Catalase Activity and β-Carotene Content at Pigmented Yeast Strain Rhodotorula gracilis

Publié en ligne: 26 août 2017

Pages: 35 - 40

DOI: https://doi.org/10.1515/aucft-2017-0004

Mots clés
nanoparticles, β-carotene, catalase

© 2017 Lucian Blaga University

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Effect of Fe3O4 and TiO2 Nanoparticles on Catalase Activity and β-Carotene Content at Pigmented Yeast Strain Rhodotorula gracilis

Publié en ligne: 26 août 2017

Pages: 35 - 40

DOI: https://doi.org/10.1515/aucft-2017-0004

Mots clésnanoparticles, β-carotene, catalase

© 2017 Lucian Blaga University

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Effect of Fe₃O₄ and TiO₂ Nanoparticles on Catalase Activity and β-Carotene Content at Pigmented Yeast Strain Rhodotorula gracilis

Mots clés
nanoparticles, β-carotene, catalase