Global ETD Search
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Showing 1 to 11 of 11 for “"ProVitamin A"”.
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Quality and storage stability of provitamin A biofortified amahewu, a non-alcoholic cereal beverage
Submitted in fulfilment of the academic requirements for the degree of Master of Applied Science in Food Science and Technology, Durban University of Technology, 2015.
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Understanding The Carotenoid Biosynthesis Pathway in Orange Actinidia Species
… and are beneficial to human health primarily as provitamin A, therefore, they are essential for dietary intake. The aim of this thesis is to understand and characterize carotenogenesis in kiwifruit (Actinidia species) and its regulation in the orange Actinidia species. Metabolic analysis of …
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Genetic dissection of carotenoid concentration and compositional traits in maize grain
… beta-carotene and beta-cryptoxanthin, which are proVitamin A carotenoids. While phenotypic sampling and recombination across diverse maize germplasm has been successful, response to phenotypic selection has not been large enough to satisfy target nutritional levels. Greater phenotypic gain may be …
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Genotype effects impact lipids and organ weights in female mice lacking carotenoid cleavage enzymes
… biologically-active retinoids. Lycopene is a non-provitamin A carotenoid and the most abundant carotenoid in tomatoes. Lycopene is a poor substrate for CMO-I, but our lab along with other has proposed that the enzyme carotenoid 9'10'-monoxygenase (CMO-II) can oxidatively cleave lycopene. In order …
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Assessment and analysis of antioxidant carotenoids in Lithuanian population and their significance in the etiopathogenesis of cardiovascular diseases /
… These compounds are well known for their provitamin A activity, anti-inflammatory action, furthermore they can affect gap junction communication and xsenobiotic metabolism. However studies to prove biological activity of carotenoids usually are performed in vitro and using animal models. …
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Investigating carotenoid loss after drying and storage of orange-fleshed sweet potato
… OFSP could therefore be a significant source of provitamin A. In contrast, storage of chips at room temperature in Uganda and Mozambique for four months resulted in high losses of pro-vitamin A (ca. 70-80% loss from the initial dried product). Low-cost pre-treatments, such as blanching, …
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Lycopene metabolism in transgenic mice
… can confer positive health benefits. The non-provitamin A carotenoid, lycopene, has shown to be one of the most abundant carotenoids in serum and is correlated with a wide range of health benefits. Lycopene has been thought to exhibit its bioactivity from its antioxidant structure or its …
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The effects of supplementation of β-carotene during the close-up period on cows, colostrum, and calves
… and is a dual-purpose nutrient, having both provitamin A and antioxidative functions. Ingested β-carotene can be cleaved into two molecules of retinol if the animal is in need of retinoids. If vitamin A stores are sufficient, β-carotene will be used to help dispose of potentially harmful …
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Β-carotene promotes atherosclerosis resolution and alleviates liver inflammation in a reversible murine model of atherosclerosis: A potential role of regulatory T cells
… most of which are mediated through its provitamin A activity. Our laboratory has recently shown that β-carotene conversion to vitamin A is associated with reduced circulating cholesterol levels in mice and humans. Objective: To study the effect of β-carotene on atherosclerosis regression …
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Pink discolouration in cheese
… carotenoid was β-carotene followed by other provitamin A carotenoids and carotenoids of bacterial origin like decaprenoxanthin, sarcinaxanthin and echinenone. Analysis of the core extracts of these cheeses showed β-carotene and very low levels of cryptoxanthin-like carotenoids. In the third …
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Defining risk for metabolic syndrome in young Mexican adults: the relationship between β,β-carotene-15,15'- oxygenase 1, nutrition and the lipid profile
… exhibit both low and high conversion rates of provitamin A carotenoids to functional retinoids. This may be due to single nucleotide polymorphism (SNPs) within and upstream of the BCO1 locus impart changes in the efficiency of conversion of β-carotene to retinol (6, 7). Given the connection …