The Influence of Ultrasound on the Growth of <i>Nannochloris</i> sp. in Modified Growth Medium
The influence of ultrasound irradiation on the algal biomass productivity as well as its oil content and fatty acids profile, grown in a modified Zarrouk medium, i.e., deproteinized whey waste solution, was investigated. The algal samples (<i>Nannochloris</i> sp. 424-1 microalgae) were g...
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MDPI AG
2023-02-01
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| Series: | Life |
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| Online Access: | https://www.mdpi.com/2075-1729/13/2/413 |
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| author | Alin Cristian Nicolae Vintila Mircea Vinatoru Ana-Maria Galan Alexandru Vlaicu Mihaela Ciltea-Udrescu Anca Paulenco Adina Ionuta Gavrila Ioan Calinescu |
| author_facet | Alin Cristian Nicolae Vintila Mircea Vinatoru Ana-Maria Galan Alexandru Vlaicu Mihaela Ciltea-Udrescu Anca Paulenco Adina Ionuta Gavrila Ioan Calinescu |
| author_sort | Alin Cristian Nicolae Vintila |
| collection | DOAJ |
| description | The influence of ultrasound irradiation on the algal biomass productivity as well as its oil content and fatty acids profile, grown in a modified Zarrouk medium, i.e., deproteinized whey waste solution, was investigated. The algal samples (<i>Nannochloris</i> sp. 424-1 microalgae) were grown for 7 days in a thermostated incubator at 28 °C, shaken under continuous light. During this period, the algal biomass was subjected to induced stress by ultrasonic irradiation at different powers and sonication time. The obtained results demonstrate that ultrasound stressing of algae biomass has a positive effect on both the quantity of biomass and the oil obtained, also causing a shift in fatty acid composition by increasing the proportion of C16 and C18 polyunsaturated fatty acids. A low dosage level of exposure to the ultrasound led to algal biomass increase as well as lipid accumulation. For both types of irradiation modes which were investigated, daily and only initial irradiation, the beneficial effect of the ultrasound decreases as the exposure time increases and the excessive sonication becomes detrimental to microalgae growth. |
| first_indexed | 2024-03-11T08:32:38Z |
| format | Article |
| id | doaj.art-97cc457c8a894143b11ffa5352277c36 |
| institution | Directory Open Access Journal |
| issn | 2075-1729 |
| language | English |
| last_indexed | 2024-03-11T08:32:38Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Life |
| spelling | doaj.art-97cc457c8a894143b11ffa5352277c362023-11-16T21:40:55ZengMDPI AGLife2075-17292023-02-0113241310.3390/life13020413The Influence of Ultrasound on the Growth of <i>Nannochloris</i> sp. in Modified Growth MediumAlin Cristian Nicolae Vintila0Mircea Vinatoru1Ana-Maria Galan2Alexandru Vlaicu3Mihaela Ciltea-Udrescu4Anca Paulenco5Adina Ionuta Gavrila6Ioan Calinescu7National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, RomaniaFaculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, RomaniaNational Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, RomaniaNational Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, RomaniaNational Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, RomaniaNational Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, RomaniaFaculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, RomaniaFaculty of Chemical Engineering and Biotechnologies, University Politehnica of Bucharest, 1-7 Polizu Street, 011061 Bucharest, RomaniaThe influence of ultrasound irradiation on the algal biomass productivity as well as its oil content and fatty acids profile, grown in a modified Zarrouk medium, i.e., deproteinized whey waste solution, was investigated. The algal samples (<i>Nannochloris</i> sp. 424-1 microalgae) were grown for 7 days in a thermostated incubator at 28 °C, shaken under continuous light. During this period, the algal biomass was subjected to induced stress by ultrasonic irradiation at different powers and sonication time. The obtained results demonstrate that ultrasound stressing of algae biomass has a positive effect on both the quantity of biomass and the oil obtained, also causing a shift in fatty acid composition by increasing the proportion of C16 and C18 polyunsaturated fatty acids. A low dosage level of exposure to the ultrasound led to algal biomass increase as well as lipid accumulation. For both types of irradiation modes which were investigated, daily and only initial irradiation, the beneficial effect of the ultrasound decreases as the exposure time increases and the excessive sonication becomes detrimental to microalgae growth.https://www.mdpi.com/2075-1729/13/2/413microalgaeultrasoundextractionPUFA |
| spellingShingle | Alin Cristian Nicolae Vintila Mircea Vinatoru Ana-Maria Galan Alexandru Vlaicu Mihaela Ciltea-Udrescu Anca Paulenco Adina Ionuta Gavrila Ioan Calinescu The Influence of Ultrasound on the Growth of <i>Nannochloris</i> sp. in Modified Growth Medium Life microalgae ultrasound extraction PUFA |
| title | The Influence of Ultrasound on the Growth of <i>Nannochloris</i> sp. in Modified Growth Medium |
| title_full | The Influence of Ultrasound on the Growth of <i>Nannochloris</i> sp. in Modified Growth Medium |
| title_fullStr | The Influence of Ultrasound on the Growth of <i>Nannochloris</i> sp. in Modified Growth Medium |
| title_full_unstemmed | The Influence of Ultrasound on the Growth of <i>Nannochloris</i> sp. in Modified Growth Medium |
| title_short | The Influence of Ultrasound on the Growth of <i>Nannochloris</i> sp. in Modified Growth Medium |
| title_sort | influence of ultrasound on the growth of i nannochloris i sp in modified growth medium |
| topic | microalgae ultrasound extraction PUFA |
| url | https://www.mdpi.com/2075-1729/13/2/413 |
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