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Related Concept Videos

Biological Methods for Microbial Control01:28

Biological Methods for Microbial Control

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Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
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Methods for Controlling Microbial Growth01:29

Methods for Controlling Microbial Growth

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Microbial growth control refers to various methods employed to inhibit, reduce, or eliminate microorganisms to ensure safety and hygiene across different settings. These methods are categorized based on the target environment and the level of microbial control required.Biocides are versatile agents designed to control microorganisms by either inhibiting their growth or outright killing them. These agents work through various physical, chemical, mechanical, or biological mechanisms. The...
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Physical Methods for Controlling Microbial Growth: Radiation and Filtration01:26

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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.
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Chemical Agents for Microbial Control01:27

Chemical Agents for Microbial Control

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Chemicals play important roles in controlling microbial growth by targeting microbial structures and functions as sanitizers, antiseptics, disinfectants, and sterilants.Alcohols are commonly used sanitizers, effectively disrupting lipid membranes, which compromises cell integrity. They are also used as antiseptics and disinfectants due to their rapid action and versatility.Phenols and their derivatives phenolics , known for denaturing proteins and disrupting cell membranes, are particularly...
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Bioremediation00:46

Bioremediation

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Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
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Related Experiment Video

Updated: Feb 24, 2026

Comparison of Scale in a Photosynthetic Reactor System for Algal Remediation of Wastewater
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Microorganisms-based methods for harmful algal blooms control: A review.

Rui Sun1, Pengfei Sun2, Jianhong Zhang3

  • 1State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.

Bioresource Technology
|August 13, 2017
PubMed
Summary

Harmful algal blooms (HABs) can be controlled using microorganisms. This review details methods like bioflocculation, growth inhibition, and lysis, focusing on single-species and microbial aggregate approaches for effective water management.

Keywords:
Control methodsHarmful algal bloomsMicrobial aggregatesNutrients regulationSingle-species microorganisms

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Area of Science:

  • Environmental Microbiology
  • Aquatic Ecology
  • Biotechnology

Background:

  • Harmful algal blooms (HABs) pose significant global threats to aquatic ecosystems and water resources.
  • Existing control strategies necessitate continuous research into effective and sustainable mitigation techniques.

Purpose of the Study:

  • To systematically review and categorize current microorganism-based technologies for controlling HABs.
  • To explore the potential of microbial aggregates as a novel approach for HABs management.

Main Methods:

  • Categorization of microorganism-based HAB control methods into single-species and microbial aggregate approaches.
  • Analysis of methods including bioflocculation, growth inhibition, and algal lysis.
  • Examination of periphyton and biofilm applications in HAB mitigation.

Main Results:

  • Microorganism-based methods offer diverse strategies for HAB control, including rapid cell density reduction, growth inhibition, and direct lysis.
  • Methods utilizing microbial aggregates (periphytons, biofilms) present a promising, integrated approach.
  • A novel "flocculation-lysis-degradation-nutrients regulation" process is proposed for comprehensive HAB control.

Conclusions:

  • Microorganism-based strategies, particularly those involving microbial aggregates, provide a systematic and potentially more sustainable pathway for HAB control.
  • Further research into microbial aggregates could revolutionize HAB management by offering integrated ecological solutions.