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.
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Showing 1 to 20 of 156 for “"carotenoid"”.
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Ultraviolet Radiation and Carotenoid Pigmentation in Symbiotic Anthozoans
… symbiosis, to investigate 1) the origin of carotenoid pigmentation and the role of carotenoids as ultraviolet radiation (UVR) photoprotectants and 2) the repopulation and photoadaptive response of symbiotic algae (i.e., zooxanthellae) after bleaching. An experiment was conducted to partition …
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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 …
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Carotenoid metabolism in mice and prostate cancer risk
… little is known about the metabolism of other carotenoids. We and others have hypothesized that other acyclic carotenoids, like lycopene, are eccentrically cleaved by carotene monoxygenase II (CMO-II). Like retinoids, we propose that carotenoid metabolites produced by CMO-II enzymatic cleavage …
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Evolutionary genetics of CYP2J19 in red carotenoid pigmentation
Carotenoids are responsible for much of the bright yellow to red colours in animals and have been extensively studied as condition dependent signals in sexual selection. In addition to their function in coloration, carotenoids also play a crucial role in colour vision within certain lineages. …
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Understanding The Carotenoid Biosynthesis Pathway in Orange Actinidia Species
Carotenoids belong to the tetraterpene family and are involved in diverse biological processes in plants. Along with a primary role in photosynthesis, they also provide distinct colours (red, yellow, and orange) to fruit, vegetables, and flowers to attract pollinators and facilitate pollination and …
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Synthesis, biological activity and mechanism of atypical carotenoid antilipoperoxidants
… the role of lipid peroxidation in human disease. Carotenoids are an extensively studied class of polyene containing small molecules with antilipoperoxidant activity. Yet no significant progress has been made towards utilizing carotenoids either as clinically proven treatments or to definitively …
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Genetic Variation Among Maize Genotypes for Carotenoid and Tocopherol Compounds
We analyzed the amount of carotenoid and tocopherol fractions at early, intermediate, and late stages of kernel development; and the rate of deposition during this period. Although there were differences among genotypes, general tendency was that both classes of compounds accumulated rapidly in …
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Genetic dissection of carotenoid concentration and compositional traits in maize grain
Carotenoid compounds are derivatives of a well described secondary metabolic pathway in plants, participating in a diverse array of physiological functions, and are nutritionally valued vitamin precursors in the human diet. With the goal of enhancing the quantity (concentration) and quality …
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Discovering carotenoid biodistribution pathways: Novel mechanisms and their implications for health
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-03-01 without embargo terms
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Early life nutrition and genetic contributors to carotenoid status in children
Background. Carotenoids are potent antioxidants that are found in vegetables, fruits, eggs, and some seafood. Circulating carotenoids are associated with a reduced risk for cardiovascular disease and some types of cancers. Carotenoid accumulation in certain tissues, such as the retina, brain, and …
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Genetic and Physiological Basis of Carotenoid Accumulation in the Cavefish Astyanax mexicanus
Carotenoids are naturally occurring pigments synthesized by plants, algae, and photosynthetic bacteria. For animals, which cannot synthesize these compounds de novo, carotenoids must be obtained through diet. Once ingested, carotenoids are metabolized and stored, playing pivotal roles in biological …
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Enhancement of Carotenoid Biosynthesis and Antioxidant Responses in Diatoms by Light Modulation
The ecological success of diatoms is mostly attributed to their ability to adjust biological performances to the variable environmental conditions they experience in the water column. While the efficient photoacclimative and photoprotective mechanisms in diatoms are already reported, the …
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Role of regulatory proteins in carotenoid biosynthesis and metabolism in Fusarium fujikuroi
… metabolitos con interés industrial, como los carotenoides. F. fujikuroi produce un carotenoide particular llamado neurosporaxantina, que ha demostrado tener un gran poder antioxidante en estudios in vitro, y actividad provitamina A y buena absorción en ratones. Lo que le otorga un gran interés …
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Investigating carotenoid loss after drying and storage of orange-fleshed sweet potato
… quantify and understand the factors influencing carotenoid losses in dried OFSP. Losses were determined in chips after drying and storage. A preliminary study demonstrated that carotenoid levels were not significantly different following either solar or sun drying. Carotenoid loss after drying …
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Genotype effects impact lipids and organ weights in female mice lacking carotenoid cleavage enzymes
Carotenoids are very abundant in nature and their consumption has numerous positive health outcomes. There are two known enzymes that are responsible for cleaving carotenoids in to their metabolites. β-carotene is cleaved by carotenoid-15,15'-oxygenase (CMO-I), to eventually form …
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A study of the function of carotenoid pigments of a red psychrophilic micrococcus from Antarctica
… and glutathione did not affect synthesis of carotenoids in the concentrations used.
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Eating quality and variability in carotenoid content and profiles in winter squash and sweet potato
… weight (%DW), soluble solids contents (%SSC) and carotenoid contents of mesocarp tissue, major attributes for determining acceptable eating quality and nutritional content. Data were recorded at harvest, either 40 or 60 days after pollination (DAP), and after 30 and 60 days of storage at 14 …
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