Isolation and Characterization of Magnetotactic Bacteria Collected from Northern India: A Preliminary Study

Singh, Renu; Ahmed, Tanzeel; Bamola, Neelam; Singh, Rajvardhan

doi:10.22207/jpam.12.2.31

Cited by 4 publications

(1 citation statement)

References 34 publications

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“…Various iron sources like ferric sulphate, ferric gallate, ferric citrate, ferric quinate and ferric malate underwent optimization studies, which ended up with positive results for ferric sulphate, ferric gallate and ferric citrate (Yang et al, 2001). In spite of several iron sources, ferric citrate was considered in many studies as it can be prepared shortly and does not have precipitation problems (Singh et al, 2018). Extraction of magnetosomes was previously done by several methods like French pressure cell disruption, magnetic separation, sonication, sucrose gradient centrifugation (Grunberg et al, 2004), boiling method (Salam et al, 2019), lysozyme lysis (Yan et al, 2012), etc.…”

Section: Discussionmentioning

confidence: 99%

Production and characterization of naturally occurring antibacterial magnetite nanoparticles from magnetotactic Bacillus sp. MTB17

Rajalakshmi¹,

Ramesh²,

Ellappan³

et al. 2022

Journal of Applied Microbiology

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Aims: This study envisaged the isolation and characterization of magnetite nanoparticles (MNPs) from magnetotactic bacteria (MTB) and the evaluation of their antibacterial efficacy. Methods and Results:MNPs were extracted from 20 motile but morphologically different MTB, and they were subjected to antibacterial activity assay. These MNPs were found to be highly effective against Vibrio cholerae. MTB17 was considered as the potent MTB strain based on the antibacterial activity. The MNPs of MTB17 were isolated and validated by UV-Visible spectroscopy, particle size analysis, FTIR analysis, and PXRD.Conclusions: Isolation and characterization of ~85 nm MNPs from MTB is reported, and it is highly active against all the gram-positive and gram-negative strains tested. Significance and Impact of the Study:This study focuses on a novel use of biogenic magnetite MNPs as an antibacterial agent, which can be further explored using in vivo studies.

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