Vitamin A and carotenoids as antioxidants in a physiological context.

  title={Vitamin A and carotenoids as antioxidants in a physiological context.},
  author={James A. Olson},
  journal={Journal of nutritional science and vitaminology},
  volume={39 Suppl},
  • James A. Olson
  • Published 1993 in Journal of nutritional science and vitaminology
Under selected conditions, vitamin A and carotenoids can both accept and donate electrons, and carotenoids can also quench singlet oxygen. Thus both sets of compounds can theoretically participate in a biological antioxidant network. Under physiological conditions, vitamin A esters are transported and stored in a lipid matrix that contains other antioxidants, and retinol and its active metabolites are largely bound in clefts of specific retinoid-binding proteins. Thus, vitamin A seems to be… CONTINUE READING