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Naturally occurring anti-Salmonella agents.
1Department of Environmental Science, Policy and Management, University of California, Berkeley, California 94720-3112, USA. ikubo@uclink4.berkeley.edu
Journal of Agricultural and Food Chemistry
|December 18, 2001
Summary
Polygodial and (2E)-hexenal show antibacterial effects against Salmonella choleraesuis. Their combination with anethole demonstrates synergistic bacteriostatic action, but limited bactericidal synergy.
Area of Science:
- Food microbiology
- Natural product chemistry
- Bacteriology
Background:
- Salmonella choleraesuis is a significant foodborne pathogen.
- Alpha,beta-unsaturated aldehydes are known for their biological activities.
- Understanding natural compounds' antimicrobial properties is crucial for food safety.
Purpose of the Study:
- To evaluate the antibacterial activity of polygodial and (2E)-hexenal against Salmonella choleraesuis.
- To investigate the synergistic effects of polygodial and anethole on bacterial growth and killing.
- To determine the minimum bactericidal concentrations (MBC) of these compounds.
Main Methods:
- Minimum bactericidal concentration (MBC) assays.
- Time-kill curve studies.
- Synergism testing for compound combinations.
Main Results:
- Polygodial and (2E)-hexenal exhibited bactericidal activity against Salmonella choleraesuis.
- Minimum bactericidal concentrations (MBC) were 50 microg/mL for polygodial and 100 microg/mL for (2E)-hexenal.
- Polygodial and anethole showed strong synergism in bacteriostatic action, with marginal synergism in bactericidal action.
Conclusions:
- Polygodial and (2E)-hexenal are effective bactericidal agents against Salmonella choleraesuis.
- The combination of polygodial and anethole offers potential for synergistic control of Salmonella growth.
- These findings contribute to the development of natural antimicrobials for food safety applications.