An antimicrobial substance (natural, semi-synthetic or synthetic) is a substance capable of destroying or inhibiting the growth of microorganisms, but causes little or no damage to the host. Antimicrobial drugs either kill (microbicidal) or prevent the growth of microorganisms (microbistatic).
An antimicrobial activity assay is a challenge test to determine the microbicidal/microbistatic properties of a product by challenging it with targeted microorganisms. Survivability of targeted microorganisms in the challenged product is monitored for 24 hours continuously by using spectrophotometer.
The advantages of this test are:
An example of how result is reported for anti-Salmonella activity in Product ABC:
XX = Product concentrations to be tested as requested by customer
VFAD provides antimicrobial activity assays as listed below*:-
*This is not an exhaustive list, >20 species can be tested to suit your needs.