Responses of Lactic Acid Bacteria to Bacteriocins and Other Antimicrobials

Asaduzzaman, Sikder M.; Sonomoto, Kenji

doi:10.1007/978-0-387-92771-8_18

Cited by 2 publications

(2 citation statements)

References 66 publications

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“…This is possibly because the bacterial species are different, and the contact time may make a difference too. It is reported that the lytic-bactericidal lantibiotic nisin can cause multiple aberrations, including leakage of cytoplasmic contents, reduction of cell width, acceleration of cell division, minicell formation, abnormal morphogenesis of bacterial cells and eventual cell death [ 47 ], and increased bacterial elongation time and a changed bacteria morphology near the division site [ 48 ]. Most of these changes were observed during nisin treatment to bacterial cells in aqueous solutions.…”

Section: Resultsmentioning

confidence: 99%

Dual functional nisin-multi-walled carbon nanotubes coated filters for bacterial capture and inactivation

Dong

Yang

2015

J Biol Eng

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BackgroundRemoval of pathogens from water is one way to prevent waterborne illness. In this paper, we developed dual functional carbon nanotube (CNT) modified filters for bacterial capture and inactivation, utilizing multi-walled CNTs (MWCNTs) to coat on commercially available filters and making use of the exceptional adsorption property of CNTs to adsorb a natural antimicrobial peptide-nisin on it. Two types of MWCNTs with different outer layer diameters were used (MWCNTs1: <8 nm in diameter; MWCNTs2: 10–20 nm in diameter).ResultsThe thickness of MWCNT layers, surface morphology, and surface hydrophobicity of both types of MWCNT coated filters were characterized. The MWCNT coating on filters significantly increased the surface hydrophobicity. The absorption of nisin and the capture of bacterial pathogens were correlated with increased surface hydrophobicity. The MWCNTs1 and MWCNTs2 filters with 1.5 mg MWCNTs loading captured 2.44 and 3.88 log of cells, respectively, from aqueous solutions containing a total of ~106 CFU/mL cells. Nisin deposit at the amount of 0.5 mg on the surfaces of MWCNT filters significantly reduced the viability of captured B. anthracis cells by 95.71–97.19 %, and inhibited the metabolic activities of the captured cells by approximately 98.3 %.ConclusionsThe results demonstrated that the MWCNT-nisin filters achieved dual functions in bacterial pathogen capture and inhibition in one single filtration step, which is potentially applicable in removing undesired microorganisms from water sources and inhibiting captured Gram positive bacteria activities.

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Section: Resultsmentioning

confidence: 99%

Dual functional nisin-multi-walled carbon nanotubes coated filters for bacterial capture and inactivation

Dong

Yang

2015

J Biol Eng

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“…Moreover, sometimes acquired resistance of a bacterial strain to a bacteriocin due to an alteration of the target cell receptor (Kicza et al . 2016 ) or a change in the composition of the cell membrane (Asaduzzaman and Sonomoto 2011 ) increases bacterial resistance to other bacteriocins as well (Naghmouchi et al . 2007 ).…”

Section: Mechanisms Of Action and Emergence Of Resistance To Bacteriomentioning

confidence: 99%

Bacteriocins as a new generation of antimicrobials: toxicity aspects and regulations

Soltani

Hammami

Cotter

et al. 2020

FEMS Microbiology Reviews

368

246

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In recent decades, bacteriocins have received substantial attention as antimicrobial compounds. Although bacteriocins have been predominantly exploited as food preservatives, they are now receiving increased attention as potential clinical antimicrobials and as possible immune-modulating agents. Infections caused by antibiotic-resistant bacteria have been declared as a global threat to public health. Bacteriocins represent a potential solution to this worldwide threat due to their broad or narrow spectrum activity against antibiotic-resistant bacteria. Notably, despite their role in food safety as natural alternatives to chemical preservatives, nisin remains the only bacteriocin legally approved by regulatory agencies as a food preservative. Moreover, insufficient data on the safety and toxicity of bacteriocins represents a barrier against the more widespread use of bacteriocins by the food and medical industry. Here we focus on the most recent trends relating to the application of bacteriocins, their toxicity and impacts.

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Responses of Lactic Acid Bacteria to Bacteriocins and Other Antimicrobials

Cited by 2 publications

References 66 publications

Dual functional nisin-multi-walled carbon nanotubes coated filters for bacterial capture and inactivation

Dual functional nisin-multi-walled carbon nanotubes coated filters for bacterial capture and inactivation

Bacteriocins as a new generation of antimicrobials: toxicity aspects and regulations

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