Genotoxicity evaluation of kaurenoic acid.

Area of Science:

• Toxicology
• Natural Products Chemistry

Background:

• Kaurenoic acid is a diterpene found in plants, explored for therapeutic and sweetening uses.
• Genotoxicity testing is crucial for assessing the safety of ingested compounds.

Purpose of the Study:

• To evaluate the genotoxic potential of kaurenoic acid.
• To determine if kaurenoic acid exhibits mutagenicity, clastogenicity, or aneugenicity.

Main Methods:

• Bacterial reverse mutation assay (Ames test) using Salmonella typhimurium and Escherichia coli strains.
• In vitro micronucleus assay using human peripheral blood lymphocytes.
• Metabolic activation with rat liver S9 mix was employed in both assays.

Main Results:

• Kaurenoic acid did not induce gene mutations in bacterial assays.
• No significant increase in micronucleated cells was observed in lymphocyte assays, despite observed toxicity.
• Results were consistent with OECD guidelines for genotoxicity testing.

Conclusions:

• Kaurenoic acid demonstrated no evidence of mutagenicity, clastogenicity, or aneugenicity.
• The findings suggest kaurenoic acid does not pose a genotoxic risk.
• Combined with existing literature, this supports the safety of kaurenoic acid for consumption.