Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Antimicrobial Effectiveness01:28

Antimicrobial Effectiveness

102
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
102
Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

Physical Methods for Controlling Microbial Growth: Radiation and Filtration

151
Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
151
Antimicrobial Proteins01:23

Antimicrobial Proteins

1.7K
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...
1.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Structures of the endophytic microbiota during heart rot development in <i>Abies georgei</i> var. <i>smithii</i>.

Microbiology spectrum·2026
Same author

Span-Morphing Wing Using Multistable Honeycomb Metamaterial Structures.

Materials (Basel, Switzerland)·2026
Same author

Interspecific interactions alter survival strategies of tree-shrub plants and hinder treeline ascent at alpine treelines in Southeastern Tibet: Evidence from<sup>13</sup>C and<sup>15</sup>N.

Ecotoxicology and environmental safety·2026
Same author

Comment on "Reduced Preoperative Cervical Spine Flexion-Extension Range of Motion is Associated With the Development of Upper Thoracic Proximal Junction Kyphosis in Adult Spinal Deformity Patients".

Global spine journal·2026
Same author

Precise design of clean-label starch: Mechanisms underlying the regulation of multiscale structure induced by non-thermal physical modification.

Carbohydrate polymers·2026
Same author

Comment on "The Effect of More than 50% Resection of the Inferior Articular Process on Spinal Stability in Unilateral Single-Segment Interlaminar Endoscopic Lumbar Discectomy".

Global spine journal·2026

Related Experiment Video

Updated: Aug 5, 2025

Evaluation of Antimicrobial Activities of Nanoparticles and Nanostructured Surfaces In Vitro
11:52

Evaluation of Antimicrobial Activities of Nanoparticles and Nanostructured Surfaces In Vitro

Published on: April 21, 2023

3.2K

Effects of Different Nanoparticles on Microbes.

Bin Niu1,2, Gengxin Zhang1

  • 1State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China.

Microorganisms
|March 29, 2023
PubMed
Summary

Nanoparticles like gold, ludox, and laponite act as bactericides, disrupting microbial cell membranes and inhibiting nutrient access. These interactions, including nanoparticle effects on iron reduction, highlight the need for more research on nanoparticle-microbe relationships in nature.

Keywords:
Fe (III)aggregationinteractionsmicrobesnanoparticles

More Related Videos

Studying Copper Nanoparticle-Induced Programmed Cell Death in Bacteria
08:22

Studying Copper Nanoparticle-Induced Programmed Cell Death in Bacteria

Published on: May 16, 2025

185
Solubilization and Bio-conjugation of Quantum Dots and Bacterial Toxicity Assays by Growth Curve and Plate Count
13:06

Solubilization and Bio-conjugation of Quantum Dots and Bacterial Toxicity Assays by Growth Curve and Plate Count

Published on: July 11, 2012

14.4K

Related Experiment Videos

Last Updated: Aug 5, 2025

Evaluation of Antimicrobial Activities of Nanoparticles and Nanostructured Surfaces In Vitro
11:52

Evaluation of Antimicrobial Activities of Nanoparticles and Nanostructured Surfaces In Vitro

Published on: April 21, 2023

3.2K
Studying Copper Nanoparticle-Induced Programmed Cell Death in Bacteria
08:22

Studying Copper Nanoparticle-Induced Programmed Cell Death in Bacteria

Published on: May 16, 2025

185
Solubilization and Bio-conjugation of Quantum Dots and Bacterial Toxicity Assays by Growth Curve and Plate Count
13:06

Solubilization and Bio-conjugation of Quantum Dots and Bacterial Toxicity Assays by Growth Curve and Plate Count

Published on: July 11, 2012

14.4K

Area of Science:

  • Environmental Science
  • Microbiology
  • Materials Science

Background:

  • Nanoparticles are ubiquitous in nature, possessing unique properties distinct from bulk materials.
  • The environmental impact of nanomaterials on microbial communities remains largely unexplored.
  • Understanding these interactions is crucial for assessing ecological risks and benefits.

Purpose of the Study:

  • To investigate the inhibitory effects of gold, ludox, and laponite nanoparticles on *Escherichia coli*.
  • To examine the influence of laponite nanoparticles on the iron reduction capabilities of *Shewanella putrefaciens*.
  • To elucidate the mechanisms underlying nanoparticle-microbe interactions in aquatic environments.

Main Methods:

  • Exposure of *Escherichia coli* to various nanoparticles in Luria-Bertani medium.
  • Utilizing Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) to visualize cell-nanoparticle interactions.
  • Assessing iron reduction by *Shewanella putrefaciens* in the presence of laponite nanoparticles and ferrihydrite or ferric citrate.

Main Results:

  • Gold, ludox, and laponite nanoparticles demonstrated bactericidal activity against *Escherichia coli*, causing cell membrane disruption.
  • Laponite nanoparticles inhibited the reduction of solid-phase Fe(III) by blocking direct cell contact.
  • Laponite nanoparticles showed minimal impact on aqueous Fe(III) reduction but slightly enhanced the rate, potentially by scavenging inhibitory Fe(II).

Conclusions:

  • Nanoparticles can significantly impact microbial viability and function through membrane disruption and nutrient blockage.
  • Microbial interactions with nanoparticles are complex, with potential for both inhibition and, in some cases, enhanced activity.
  • Further research into the dual role of nanoparticles and microbes in natural environments is warranted.