Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 166 for “"carotenoids"”.
-
Transformations of carotenoids in the oceanic water column
In an effort to understand the more general mechanisms and rates of pre-depositional reactions that transform organic matter, the types and relevant time scales of reactions that transform carotenoid pigments in the oceanic water column were studied. Suspended particulate matter collected from …
-
Intestinal Uptake of Carotenoids: Implications for Carotenoid Bioavailability
Lycopene is the predominant carotenoid in tomatoes and tomato-based foods and is also a predominant carotenoid in human serum and tissues. The observation that serum and tissue lycopene is more than 50% cis-lycopene, whereas tomatoes and tomato-based foods contain mainly all-trans lycopene, has led …
-
Transformations of carotenoids in the oceanic water column
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1982.
-
Laying-Sequence Variation in Yolk Carotenoids of Eastern Bluebirds
<p>Carotenoids are naturally occurring, fat-soluble pigments that play an important role in the embryonic development of songbirds. Female songbirds use different strategies to allocate these important maternal resources to their eggs. Little research has been done on whether North American …
-
In vitro production, purification and metabolism of tomato carotenoids
Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2013-08-27T10:00:26Z Item was in collections: University of Illinois Dissertations and Theses (ID: 204) Dissertations and Theses - Food Science and Human Nutrition (ID: 674) No. of bitstreams: 3 Lu_Chi-Hua.pdf.txt: 184690 bytes, checksum: …
-
Carotenoids, cognitive function, and brain health in pediatric populations
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-05-01
-
Liquid-liquid extraction of carotenoids from palm oil (Elaeis guineensis)
… 1.4578 ± 0.00 and 1.4588 ± 0.00, and (f) total carotenoids (μg/g) of 668.81 ± 0.01 and 638.14 ± 0.03. Crude palm oil presented an ash content of 0.03 ± 0.00% and humidity of 0.28 ± 0.04% (m/m). The ash and humidity contents of degummed palm oil were not determined. Density and rheological …
-
Genetic Analysis of Variation for Carotenoids and Tocopherols in Maize
Carotenoids and tocopherols are two classes of compounds present in maize (Zea mays L.) which may add value to the grain. Both the carotenoids and tocopherols are fat soluble antioxidant vitamins. The vitamin and antioxidant properties of the carotenoids and tocopherols provide health and economic …
-
Development of a high-throughput phenotyping method for measuring sorghum carotenoids
… method. To validate the HTP method, we measured carotenoids in 249 lines in a biparental breeding family, using both HPLC and UV-VIS, and again identified a strong correlation (R2=0.61, p-value<2.2x10-16). We also compared the predictability of the UV-VIS method to that of a simple visual …
-
Comparative absorption and transport of various carotenoids in the preruminant calf
… appearance and lipoprotein transport of several carotenoids commonly found in the human diet. In addition, this work examined the effect of fat level in meals on the absorption of $\beta$-carotene. The preruminant calf has been shown in previous studies to be an excellent model for human …
-
Assessment of methods to screen for carotenoids in yellow-fleshed potato germplasm
… REIMS as an efficient platform to identify carotenoids in yellow-fleshed potato germplasm (N = 60) from the Colorado Potato Breeding and Selection Program. The specific aim eventually is to improve selection efficiency and accelerate genetic gain in nutritional quality of potato cultivars. …
-
Structural characterisation and absolute stereochemistry of some degraded carotenoids from New Zealand honeys
… and absolute stereochemistries of some degraded carotenoids from New Zealand native honeys were elucidated. Determination of the absolute stereochemistry of 3,5,6-trihydroxy-β-ionone was attempted by an enantioselective synthesis. A racemic synthesis was achieved starting from β-ionone. The key …
-
Continuous Production of Palm Methyl Esters With Recovery of Carotenoids Using Membrane Technology
Palm oil contains high concentration of valuable carotenoids which are usually destroyed during conventional oil processing. The objective of this research was to develop a new process for recovering carotenoids by converting palm oil into methyl esters through continuous transesterification …
-
Antiproliferative Activity of Carotenoids, Phenolic Compounds, and Volatile Terpenoids in Carrots (Daucus carota L.)
… has been thought to be attributed to carrot carotenoids. Despite this, various intervention trials have displayed no changes in incidence or increased incidence of cancer with carotenoid supplementation. It is possible that carrot phenolics are responsible for this association, though this …
-
INTERRELATIONSHIPS BETWEEN MACULAR CAROTENOIDS, RETINAL MORPHOMETRY, AND COGNITIVE FUNCTION IN PERSONS WITH MULTIPLE SCLEROSIS
… benefits. Macular xanthophylls are dietary carotenoids that comprise the macular pigment, serving as blue light filters and countering photooxidative damage. The robust antioxidant effects of carotenoids could support nerve health and protect against cognitive decline. However, macular …
-
The Stability of Natural Fats as Affected by The Interaction of Phospholipids, Carotenoids and Tocopherols
Made available in DSpace on 2014-12-05T19:06:34Z (GMT). No. of bitstreams: 1 0007009.pdf: 4017045 bytes, checksum: 798157ca87dc38ac870666bcc596a3a6 (MD5) Previous issue date: 1952
-
Using pro-vitamin A carotenoids as a therapeutic strategy to reduce the burden of obesity and atherosclerosis
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
-
Assessment and analysis of antioxidant carotenoids in Lithuanian population and their significance in the etiopathogenesis of cardiovascular diseases /
… oxygen ions and other types of free radicals. Carotenoids - natural pigments synthesized by plants and microorganisms - in the human body they are one of the most important exogenous lipophilic antioxidants. Biological action of carotenoids is not limited to antioxidant activity. These …
-
Dietary tomato carotenoids and β-carotene-15,15'- dioxygenase (Bco1) genotype alter androgen metabolism, lipid metabolism, and prostate cancer progression in mice
… (BCO1) cleaves dietary carotenoids at the central 15,15' double bond, most notably acting on β-carotene to yield retinal. Much work has gone into the description of enzymatic carotenoid cleavage activities of the enzyme, but although pleiotropic effects of Bco1 loss on …
-
Kvantinės chemijos skaičiavimų rezultatų duomenų bazės ir informacinės sistemos panaudojimas karotenoidų analizei /
Phytochemicals such as carotenoids are important subjects of research because of their potential as medicines for various diseases. Dietary intake of carotenoids such as lycopene, beta-carotene, and alpha-carotene may reduce the risk of cancer and heart disease. In addition to their health …
Page 1 of 9