Broccoli seed extract: Genotoxicity and subchronic toxicity studies

Area of Science:

• Nutritional Science
• Toxicology
• Food Safety

Background:

• Broccoli consumption is linked to health benefits.
• Broccoli seed extract (BSE) shows potential as a food ingredient and dietary supplement.
• Assessing the safety of BSE is crucial for its application.

Purpose of the Study:

• To evaluate the genotoxicity of BSE.
• To determine the acute oral toxicity of BSE.
• To assess the potential adverse effects of BSE in a 30-day feeding study in rats.

Main Methods:

• Conducted Ames, in vivo mouse micronucleus, and in vivo mouse sperm abnormality assays for genotoxicity.
• Performed acute oral toxicity tests and a 30-day feeding study in rats.
• Administered BSE at doses of 0, 0.3, 1.0, or 3.0 g/kg body weight/day in the feeding study.

Main Results:

• BSE exhibited no mutagenic activity in the Ames assay.
• No genotoxic potential was observed in in vivo assays up to 10 g/kg body weight.
• The LD50 of BSE in rats was greater than 10 g/kg body weight/day.
• No significant toxicological effects were noted in the 30-day feeding study at doses up to 3.0 g/kg body weight/day.
• The no-observed-adverse-effect level (NOAEL) was determined to be 3.0 g/kg body weight/day.

Conclusions:

• BSE demonstrated a lack of genotoxicity and acute oral toxicity.
• The 30-day feeding study indicated no adverse effects at the highest dose tested.
• Results support the safe use of broccoli seed extract as a food ingredient or dietary supplement.