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Related Experiment Video

Updated: Aug 18, 2025

Isolation of Single Intracellular Bacterial Communities Generated from a Murine Model of Urinary Tract Infection for Downstream Single-cell Analysis

Isolation of Single Intracellular Bacterial Communities Generated from a Murine Model of Urinary Tract Infection for Downstream Single-cell Analysis

Published on: April 16, 2019

Swarming Magnetic Microrobots for Pathogen Isolation from Milk.

Carmen C Mayorga-Martinez¹, Marketa Castoralova², Jaroslav Zelenka²

¹Center for Advanced Functional Nanorobots, Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 166 28, Czech Republic.

Small (Weinheim an Der Bergstrasse, Germany)

|December 7, 2022

Summary

Magnetic microrobots efficiently isolate Staphylococcus aureus from milk, a key step in preventing food contamination. This novel, fuel-free approach targets bacteria without harming milk

Keywords:

bacteria collective behavior infections micromachines

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Last Updated: Aug 18, 2025

Isolation of Single Intracellular Bacterial Communities Generated from a Murine Model of Urinary Tract Infection for Downstream Single-cell Analysis

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Published on: March 23, 2018

Remote Magnetic Actuation of Micrometric Probes for in situ 3D Mapping of Bacterial Biofilm Physical Properties

Remote Magnetic Actuation of Micrometric Probes for in situ 3D Mapping of Bacterial Biofilm Physical Properties

Published on: May 2, 2014

Area of Science:

Biotechnology
Food Safety
Nanotechnology

Background:

Bovine mastitis caused by Staphylococcus aureus (S. aureus) significantly impacts milk production due to heat-stable enterotoxins.
Existing hygienic procedures are often insufficient to eliminate these toxins once formed in dairy products.
Effective methods for S. aureus detection and removal are crucial for ensuring milk safety.

Purpose of the Study:

To develop and evaluate magnetic microrobots (MagRobots) for the selective isolation of S. aureus from milk.
To demonstrate the efficacy of MagRobots in capturing S. aureus at levels meeting FDA standards.
To assess the system's compatibility with natural milk microbiota and its potential for industrial application.

Main Methods:

Development of paramagnetic hybrid microstructures loaded with rabbit serum IgG.
Utilizing Protein A on S. aureus to bind IgG, facilitating bacterial capture by MagRobots.
Testing isolation selectivity using mixed suspensions of S. aureus and Escherichia coli (E. coli).

Main Results:

MagRobots successfully isolated S. aureus at a concentration of 3.42 x 10^4 CFU g^-1, meeting FDA allowable minimum levels.
Selective isolation was confirmed by differentiating S. aureus from E. coli in mixed bacterial samples.
The fuel-free magnetic system preserved the natural milk microbiota and avoided toxic byproducts.

Conclusions:

Developed magnetic microrobots offer an efficient, fuel-free method for isolating S. aureus from milk.
The system demonstrates high selectivity, preserving milk's natural microbial community.
This technology holds significant potential for scalable industrial use in food production safety.