Related Experiment Videos
Short-term toxicity study of Green S in rats
Summary
The food additive Green S showed no toxic effects in rats at doses up to 500 mg/kg body weight. Higher doses (1500 mg/kg) caused mild anemia and other effects, indicating a safe upper limit for consumption.
Area of Science:
- Toxicology
- Food Science
- Animal Studies
Background:
- Green S is a synthetic food colorant.
- Understanding its toxicological profile is crucial for food safety regulations.
Purpose of the Study:
- To evaluate the subchronic toxicity of Green S in rats.
- To determine the no-observed-adverse-effect level (NOAEL) of Green S.
Main Methods:
- Rats (male and female) were administered Green S orally at doses of 0, 250, 500, or 1500 mg/kg body weight/day for 13 weeks.
- Hematological, clinical chemistry, urinalysis, and gross pathology assessments were performed.
- Specific attention was paid to effects on body weight, food/water intake, and organ weights.
Main Results:
- Green S was excreted in feces and urine.
- Males exhibited increased food and water intake and body weight gain at the highest dose.
- A transitory mild anemia was observed at 1500 mg/kg.
- Higher incidences of urinary protein, protein casts, increased cecal weight, thyroid degeneration (females), and intestinal lymph node enlargement were noted at 1500 mg/kg.
Conclusions:
- The no-observed-adverse-effect level (NOAEL) for Green S was determined to be 500 mg/kg body weight/day.
- While generally well-tolerated, high doses of Green S can induce reversible hematological and pathological changes in rats.