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Antioxidant activity in human faeces.

M Garsetti1, N Pellegrini, C Baggio

  • 1Department of Food Science & Technology, University of Milan, Via Celoria, 2-20133 Milan, Italy.

The British Journal of Nutrition
|February 15, 2001
PubMed
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Antioxidants in feces show activity in the large bowel, potentially protecting against gastrointestinal diseases. This activity is linked to dietary habits like coffee and red wine consumption.

Area of Science:

  • Gastroenterology
  • Nutritional Science
  • Biochemistry

Background:

  • Unabsorbed antioxidants may reach the colon, exerting antioxidant effects.
  • This activity could protect against oxidative stress-related gastrointestinal diseases.

Purpose of the Study:

  • To evaluate fecal antioxidant activity in healthy subjects on a self-selected diet.
  • To investigate associations between fecal antioxidant activity and nutrient/food group intake.

Main Methods:

  • Fourteen healthy subjects recorded food intake over 2 days.
  • Fecal samples were collected over 24-hour periods.
  • Total antioxidant activity (TAA) was measured using the ABTS assay.

Main Results:

Related Experiment Videos

  • Average fecal TAA was 26.6 (±10.2) mmol Trolox/kg wet feces.
  • Total 24-hour antioxidant excretion averaged 3.24 (±1.51) mmol Trolox.
  • Fecal TAA correlated significantly with coffee and red wine intake.

    • Conclusions:

    • Feces exhibit measurable radical cation scavenging capacity, indicating colonic lumen antioxidant activity.
    • Dietary habits, particularly coffee and red wine consumption, appear to influence fecal antioxidant activity.