Related Experiment Video
Updated: Aug 11, 2026

Measurement of Carotenoids in Perifovea using the Macular Pigment Reflectometer
Published on: January 29, 2020
Symposium conclusions: biological actions of carotenoids
1Clinical Nutrition, Hoffmann-La Roche Inc., Nutley, NJ 07110.
Abstract:
The symposium on the biological action of carotenoids highlighted the antioxidant and singlet oxygen quenching properties of beta-carotene and other carotenoids of similar structure but lacking provitamin A activity. The provitamin A functions of beta-carotene were also discussed. The immuno-enhancing and anticarcinogenic actions of the carotenoids could be associated with functions unrelated to their ability to form vitamin A. Thus, the symposium emphasized the expansion of the role of beta-carotene beyond its classic nutritional function and has examined the importance of other dietary carotenoids.
More Related Videos
05:03Quantitative Analysis of Dietary Vitamin A Metabolites in Murine Ocular and Non-Ocular Tissues Using High-Performance Liquid Chromatography
Published on: December 27, 2024
08:18Methodology for Studying Interactions of Vitamin A Membrane Receptors and Opsin Protein with their Ligands in Generating the Retinylidene Protein
Published on: October 4, 2024
Related Concept Videos
The Calvin Benson Cycle
Cancer Prevention
Some...
Role of Skin in Vitamin D Synthesis
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin D3(cholecalciferol).
Lipid-derived Compounds in the Human Body
Fat-soluble Vitamins
Fat-soluble vitamins, including vitamins A, D, E, and K, are required in minimal quantities, but their deficiencies can lead to severely abnormal physiological conditions. For example, vitamin A deficiency can cause night blindness, dry skin, delayed...
Mutagenicity and Carcinogenicity