Hyperthermic effect in suspension of magnetosomes prepared by various methods

Milan Timko*, Matus Molcan, Anezka Hashim, Andrzej Skumiel, Maren Müller, Hubert Gojzewski, Arkadiusz Jozefczak, Jozef Kovac, Michal Rajnak, Marcin Makowski, Peter Kop̌canský

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

31 Citations (Scopus)

Abstract

The magnetic properties and hyperthermia effect were studied in solution of magnetosomes obtained by changing conditions during biomineralization of magnetotactic bacteria Magnetospirillum sp.AMB-1. 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. As a consequence of this change the preparation conditions coercivity and Specific Absorption Rate (SAR) increased up to 20 Oe and 949 W/gFe for sample FQ, respectively. On the other hand the process of cultivation at the changed conditions markedly reduced the cultivation time. Also the isolated chains of magnetosome were shorter containing less amount of magnetosomes too.

Original languageEnglish
Article number6392428
Pages (from-to)250-254
Number of pages5
JournalIEEE transactions on magnetics
Volume49
Issue number1
DOIs
Publication statusPublished - 4 Jan 2013
Externally publishedYes

Keywords

  • Biomineralization
  • Magnetic fluids
  • Magnetotactic bacteria Magnetospirillum sp.AMB-1
  • Morphology
  • Specific absorption rate
  • Verwey transition

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