A Comprehensive Review of Natural and Synthetic Flavonoids as Antibiofilm Agents Against Bacterial Biofilms
Related Experiment Video
Updated: Aug 5, 2026
A Platform of Anti-biofilm Assays Suited to the Exploration of Natural Compound Libraries
Published on: December 27, 2016
Samyuktha Arimalai Dinakararaja1, Ethiraj Kannatt Radhakrishnan2
1Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, India.
Abstract:
Bacterial biofilms are a major contributor to antimicrobial resistance due to their ability to protect embedded cells from antibiotics and host immune responses. This review systematically summarizes and critically evaluates recent advances in the development of natural and synthetic flavonoids as antibiofilm agents against clinically relevant bacterial biofilms. The manuscript is organized to first outline the molecular basis of biofilm formation and resistance, followed by a detailed analysis of plant-derived flavonoids reported to inhibit biofilm formation, disrupt mature biofilms or interfere with quorum sensing pathways. The advances in synthetic flavonoid analogues including flavones, flavanones, aurones, and other functionalized derivatives are reviewed with emphasis on structure-activity relationships and antibiofilm mechanisms. Recent progress in synthetic strategies such as late-stage functionalization, C-H activation, and biocatalytic modifications is discussed in the context of improving potency, selectivity, and pharmacokinetic properties. The current limitations, challenges involved with in-vivo translation and future directions for flavonoid-based antibiofilm drug development are highlighted. This comprehensive assessment underscores the potential of flavonoids as versatile antibiofilm scaffolds while identifying critical gaps that must be addressed for clinical advancement.
Insights
Flavonoids show promise in combating antibiotic resistance by inhibiting bacterial biofilms. This review explores natural and synthetic flavonoids, highlighting their potential as antibiofilm agents for future drug development.
Area of Science:
- Microbiology and Pharmacology
- Natural Product Chemistry
- Drug Discovery
Background:
- Bacterial biofilms contribute significantly to antimicrobial resistance by shielding bacteria from antibiotics and immune defenses.
- Understanding biofilm formation and resistance mechanisms is crucial for developing effective therapeutic strategies.
Purpose of the Study:
- To systematically review recent advancements in natural and synthetic flavonoids as antibiofilm agents.
- To critically evaluate the potential of flavonoids against clinically relevant bacterial biofilms.
- To explore structure-activity relationships and antibiofilm mechanisms of flavonoid derivatives.
Main Methods:
- Comprehensive literature review of natural and synthetic flavonoids targeting bacterial biofilms.
- Analysis of studies focusing on biofilm inhibition, disruption, and quorum sensing interference.
- Evaluation of synthetic strategies and structure-activity relationships for improved flavonoid efficacy.
Main Results:
- Plant-derived flavonoids demonstrate significant antibiofilm activity, inhibiting formation and disrupting mature biofilms.
- Synthetic flavonoid analogues, including flavones and flavanones, show promising structure-activity relationships and diverse antibiofilm mechanisms.
- Recent synthetic strategies enhance flavonoid potency, selectivity, and pharmacokinetic properties.
Conclusions:
- Flavonoids represent versatile scaffolds for developing novel antibiofilm agents.
- Further research is needed to address limitations in in-vivo translation and clinical advancement.
- Targeted drug development strategies are essential for realizing the full clinical potential of flavonoids against biofilms.
Related Concept Videos
01:29Biofilms
01:28Inhibitors of Bacterial DNA Synthesis