Magnetosomes - Bacterial Magnetic Nanoparticles
The magnetic properties, magneto-optical effects and hyperthermia effect were studied in solution of magnetosomes extracted from cultivated bacteria Magnetospirillum sp. AMB-1. The properties of magnetosomes were changed using different conditions during synthesis and by modification of particles af...
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| Format: | Article |
| Language: | English |
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University of Žilina
2014-02-01
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| Series: | Communications |
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| Online Access: | https://komunikacie.uniza.sk/artkey/csl-201401-0005_magnetosomes-bacterial-magnetic-nanoparticles.php |
| _version_ | 1797846908878716928 |
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| author | Matus Molcan Anezka Hashim Jozef Kovac Hubert Gojzewski Andrzej Skumiel Francois Royer Damien Jamon Peter Kopcansky Milan Timko |
| author_facet | Matus Molcan Anezka Hashim Jozef Kovac Hubert Gojzewski Andrzej Skumiel Francois Royer Damien Jamon Peter Kopcansky Milan Timko |
| author_sort | Matus Molcan |
| collection | DOAJ |
| description | The magnetic properties, magneto-optical effects and hyperthermia effect were studied in solution of magnetosomes extracted from cultivated bacteria Magnetospirillum sp. AMB-1. The properties of magnetosomes were changed using different conditions during synthesis and by modification of particles after synthesis by using sonication and ultracentrifugation methods. It was shown that adding a higher amount of Wolfe's vitamin solution (WVS) or ferric quinate (FQ) cause increase of the mean diameter from 47 nm (normal condition) up to 52 nm and 58 nm respectively. Hyperthermic measurements were performed for three types of magnetosome samples: (I) M - not influenced by separation method (long - chains magnetosomes), (II) UM - after centrifugation procedure, and (III) SM - after centrifugation procedure including sonication. The Specific Absorption Rate (SAR) decreased depending on chains shortening and decrease in hysteresis too. The SAR values were 1083, 934 or 463 W/g for the sample M, UM and SM, respectively. |
| first_indexed | 2024-04-09T18:02:32Z |
| format | Article |
| id | doaj.art-9e68a8df5617497393699732cbf9443a |
| institution | Directory Open Access Journal |
| issn | 1335-4205 2585-7878 |
| language | English |
| last_indexed | 2024-04-09T18:02:32Z |
| publishDate | 2014-02-01 |
| publisher | University of Žilina |
| record_format | Article |
| series | Communications |
| spelling | doaj.art-9e68a8df5617497393699732cbf9443a2023-04-14T06:31:09ZengUniversity of ŽilinaCommunications1335-42052585-78782014-02-01161263210.26552/com.C.2014.1.26-32csl-201401-0005Magnetosomes - Bacterial Magnetic NanoparticlesMatus Molcan0Anezka Hashim1Jozef Kovac2Hubert Gojzewski3Andrzej Skumiel4Francois Royer5Damien Jamon6Peter Kopcansky7Milan Timko8Institute of Experimental Physics, Slovak Academy of Sciences, Kosice, SlovakiaInstitute of Experimental Physics, Slovak Academy of Sciences, Kosice, SlovakiaInstitute of Experimental Physics, Slovak Academy of Sciences, Kosice, SlovakiaInstitute of Physics, Poznan University of Technology, Poznan, Poland and Max Planck Institute of Colloids and Interfaces, Potsdam, GermanyFaculty of Physics, Adam Mickiewicz University, Poznan, PolandUniversite de Lyon, Saint Etienne, France and DIOM EA 3523, Universite de Saint Etienne, Saint Etienne, FranceUniversite de Lyon, Saint Etienne, France and DIOM EA 3523, Universite de Saint Etienne, Saint Etienne, FranceInstitute of Experimental Physics, Slovak Academy of Sciences, Kosice, SlovakiaInstitute of Experimental Physics, Slovak Academy of Sciences, Kosice, SlovakiaThe magnetic properties, magneto-optical effects and hyperthermia effect were studied in solution of magnetosomes extracted from cultivated bacteria Magnetospirillum sp. AMB-1. The properties of magnetosomes were changed using different conditions during synthesis and by modification of particles after synthesis by using sonication and ultracentrifugation methods. It was shown that adding a higher amount of Wolfe's vitamin solution (WVS) or ferric quinate (FQ) cause increase of the mean diameter from 47 nm (normal condition) up to 52 nm and 58 nm respectively. Hyperthermic measurements were performed for three types of magnetosome samples: (I) M - not influenced by separation method (long - chains magnetosomes), (II) UM - after centrifugation procedure, and (III) SM - after centrifugation procedure including sonication. The Specific Absorption Rate (SAR) decreased depending on chains shortening and decrease in hysteresis too. The SAR values were 1083, 934 or 463 W/g for the sample M, UM and SM, respectively.https://komunikacie.uniza.sk/artkey/csl-201401-0005_magnetosomes-bacterial-magnetic-nanoparticles.phpnanoscale materials and structureshysteresisultrasound effects on biological systemselectron microscopy. pacs numbers: 81.07.-b75.60.-d87.50.y-68.37.-d |
| spellingShingle | Matus Molcan Anezka Hashim Jozef Kovac Hubert Gojzewski Andrzej Skumiel Francois Royer Damien Jamon Peter Kopcansky Milan Timko Magnetosomes - Bacterial Magnetic Nanoparticles Communications nanoscale materials and structures hysteresis ultrasound effects on biological systems electron microscopy. pacs numbers: 81.07.-b 75.60.-d 87.50.y- 68.37.-d |
| title | Magnetosomes - Bacterial Magnetic Nanoparticles |
| title_full | Magnetosomes - Bacterial Magnetic Nanoparticles |
| title_fullStr | Magnetosomes - Bacterial Magnetic Nanoparticles |
| title_full_unstemmed | Magnetosomes - Bacterial Magnetic Nanoparticles |
| title_short | Magnetosomes - Bacterial Magnetic Nanoparticles |
| title_sort | magnetosomes bacterial magnetic nanoparticles |
| topic | nanoscale materials and structures hysteresis ultrasound effects on biological systems electron microscopy. pacs numbers: 81.07.-b 75.60.-d 87.50.y- 68.37.-d |
| url | https://komunikacie.uniza.sk/artkey/csl-201401-0005_magnetosomes-bacterial-magnetic-nanoparticles.php |
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