Photodegradation of carotenoids in human subjects
Photodegradation of vitamins in vitro is responsible for large losses of these nutrients in foods, beverages, and semisynthetic liquid formula diets. In vivo photodegradation of vitamins has been reported for riboflavin in jaundiced infants exposed to blue light and for folate in patients with chronic psoriasis given photochemotherapy. Two recent studies of normal subjects have also shown that photodegradation of carotenoids in plasma occurs with cumulative exposure of the skin to an artificial light source having maximal spectral emission in the UVA range. Females showed a larger effect of the UV light on their plasma carotenoid levels than males. These observations have identified a need for further investigation of the role of sunlight exposure as a determinant of plasma carotenoid levels and vitamin A status in human subjects.
- Research Organization:
- Cornell Univ., Ithaca, NY
- OSTI ID:
- 6788092
- Journal Information:
- Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States), Vol. 5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CAROTENOIDS
DECOMPOSITION
VITAMIN A
CHEMICAL RADIATION EFFECTS
BLOOD PLASMA
IN VITRO
MAN
NEAR ULTRAVIOLET RADIATION
NUTRITION
ANIMALS
BIOLOGICAL MATERIALS
BLOOD
BODY FLUIDS
CHEMICAL REACTIONS
CHEMISTRY
ELECTROMAGNETIC RADIATION
HYDROCARBONS
MAMMALS
MATERIALS
ORGANIC COMPOUNDS
PIGMENTS
PRIMATES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
TERPENES
ULTRAVIOLET RADIATION
VERTEBRATES
VITAMINS
560120* - Radiation Effects on Biochemicals
Cells
& Tissue Culture