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Clinical Nutrition, Hoffmann-La Roche Inc., Nutley, NJ 07110
The symposium on the biological action of carotenoids highlighted the antioxidant and singlet oxygen quenching properties of ß-carotene and other carotenoids of similar structure but lacking provitamin A activity. The provitamin A functions of ß-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 ß-carotene beyond its classic nutritional function and has examined the importance of other dietary carotenoids.
KEY WORDS: ß-carotene non-vitamin A carotenoids retinoids immune anticarcinogen antioxidant
1 Presented as part of the symposium, "Biological Actions of Carotenoids," given at the 72nd annual meeting of the Federation of American Societies for Experimental Biology, Las Vegas, NV, May 2, 1988, and supported by grants from the BASF Corporation, Hoffmann-La Roche Inc., and the National Dairy Council.
Manuscript received 13 July 1988. Revision accepted 13 September 1988.
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