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A Platform of Anti-biofilm Assays Suited to the Exploration of Natural Compound Libraries
Published on: December 27, 2016
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Inhibitory Effects of Lactobionic Acid on Biofilm Formation and Virulence of Staphylococcus aureus.
Shimo Kang1,2, Yahui Yang1, Wanwan Hou3
1College of Food Science, Shenyang Agricultural University, Shenyang 110161, China.
Foods (Basel, Switzerland)
|September 14, 2024
Summary
Lactobionic acid (LBA) effectively inhibits and inactivates Staphylococcus aureus biofilms, reducing food contamination risks. This study shows LBA disrupts biofilm structure and suppresses virulence factors, ensuring food safety.
Area of Science:
- Food Microbiology
- Bacteriology
- Biochemistry
Background:
- Staphylococcus aureus biofilms are a significant source of food contamination and foodborne illnesses.
- Novel antibiofilm agents with anti-virulence properties are needed to control S. aureus in food systems.
Purpose of the Study:
- To investigate the antibiofilm effects of lactobionic acid (LBA) against S. aureus.
- To evaluate LBA's influence on S. aureus virulence factors and gene expression.
Main Methods:
- Determined the minimum inhibitory concentration (MIC) of LBA against S. aureus.
- Assessed biofilm inhibition and inactivation using viable count and crystal violet assays.
- Analyzed biofilm structure, extracellular DNA (eDNA) and polysaccharide (EPS) release, and hemolytic activity.
Main Results:
- LBA demonstrated an MIC of 8 mg/mL against S. aureus.
- LBA significantly inhibited and inactivated S. aureus biofilms, disrupting architecture and reducing viable cells.
- LBA decreased eDNA and EPS release, suppressed metabolic activity, repressed hemolytic activity, and altered virulence gene expression.
Conclusions:
- Lactobionic acid exhibits potent antibiofilm and anti-virulence properties against Staphylococcus aureus.
- LBA holds promise for preventing and controlling S. aureus biofilms and infections in food safety applications.
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