Impact of Dietary Composition and Beta-Carotene Isomeric Structure on Bioconversion of Beta-Carotene to Vitamin a in Gerbils
Deming, Denise Marie
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https://hdl.handle.net/2142/84927
Description
Title
Impact of Dietary Composition and Beta-Carotene Isomeric Structure on Bioconversion of Beta-Carotene to Vitamin a in Gerbils
Author(s)
Deming, Denise Marie
Issue Date
2001
Doctoral Committee Chair(s)
Erdman, John W.
Department of Study
Nutritional Sciences
Discipline
Nutritional Sciences
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Health Sciences, Nutrition
Language
eng
Abstract
In conclusion, betaC bioconversion to VA was independently and adversely affected by consumption of low dietary fat and citrus pectin. 9-Cis betaC was less and 13cbetaC was more than the currently assigned retinol equivalency of 50% of atbetaC. Thus, the actual contribution of betaC to the VA requirement may be strongly influenced by the level of fat, the type of fiber, and the proportion of cis isomers of betaC consumed in the diet.
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