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Showing 1 to 15 of 15 for “"Phytoene"”.
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Production and utilization of phytoene, phytofluene, and lycopene tracers for bioavailability and biodistribution studies
… including the carotenoids lycopene (LYC), phytoene (PE), and phytofluene (PF). Much emphasis has been placed on the bioactivity of LYC, but emerging research suggests that the colorless carotenoids, PE and PF, are bioactive and significantly accumulate in human and animal model tissues. To …
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Tomato Phytochemicals and Prostate Cancer Risk
As phytoene and phytofluene are not commercially available, plant cell culture methodologies utilizing the herbicide norflurazon and 14C-sucrose were developed to biosynthesize and radiolabel these carotenoids in tomato cell suspension cultures. DU 145 prostate tumor cells absorbed 14C-15- cis …
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Field, greenhouse, and laboratory studies on the efficacy and action of the herbicides SC-0051 and SC-0774
… an accumulation of the carotene precursor phytoene and an additional, unidentified pigment that appears to be structurally related to phytoene. This indicates that SC-0051, like norflurazon, inhibits carotenoid formation by blocking the desaturation of phytoene to phytofluene. The uptake …
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The use of reverse genetics to investigate plant-parasite interactions
… plant nematode species. Silencing of the Phytoene Desaturase gene in the holoparasitic plant Cuscuta campestris was also shown to hinder growth, branching and a reduce the production of tissue carotenoid biosynthesis. Taken together the results of this thesis offer new avenues for targeted …
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Carotenoid metabolism in mice and prostate cancer risk
… accumulated in CMO-I KO mice. Phytofluene and phytoene accumulation was not altered by genotype. Together these data suggest that lycopene is eccentrically metabolized by CMO-II and β-carotene is centrally metabolized to retinal by CMO-I. Phytoene and phytofluene may not be substrates for …
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Development and application of novel genetic transformation technologies in maize (Zea mays L.)
… of carotenoid biosynthesis, the daffodil phytoene synthase (PSY) gene was integrated into the maize genome. The results illustrate that expression of a recombinant PSY significantly increases carotenoid levels in leaves. The beta-carotene (pro-vitamin A) amounts in leaves of transgenic …
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Co-ordinated expression of CRTB, At-VTE3, and VTE4 to enhance pro-vitamin A and vitamin E in transgenic soybean
… expressing three genes: Erwinia uredovora phytoene synthase (crtB) to increase carotenoid content, Arabidopsis 2-methyl-6-phytylbenzoquinol methyl transferase (At-VTE3) and soybean [gamma]-tocopherol methyl transpherase (VTE4) to increase [alpha]-tocopherol using the self-cleavage activity …
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Profiling phytochemical and nutritional components of potato
… compounds. However, levels of expression of phytoene synthase and L-galactono-1,4-lactone dehydrogenase were not different between varieties showing contrasting levels of carotenoids and ascorbate respectively. This work will help identify varieties that could be marketed as healthier and the …
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Use of Fluridone for Control of Palmer Amaranth (Amaranthus palmeri) in Cotton (Gossypium hirsutum) and on Ditchbanks
… fomesafen, and metolachlor. Fluridone inhibits phytoene desaturase in plants, and is unique in that its mechanism of action (MOA) is not currently registered for use in cotton. Studies were conducted to determine the length of residual that fluridone provides in controlling Palmer amaranth in …
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Genetic Analysis of Variation for Carotenoids and Tocopherols in Maize
… chromosome six and is associated with the gene phytoene synthase, the first step in the carotenoid biosynthetic pathway. viviparous9 maps to chromosome seven, and is associated with zeta-carotene desaturase, another enzyme early in the biosynthetic pathway of the carotenoids.
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Advanced applications of Raman spectroscopy and super-resolution imaging of biological and plant materials
… distribution of the effects from silencing the phytoene desaturase gene within maize via the Foxtail mosaic virus vector. Raman spectroscopy revealed that the localized downstream carotenoid expression was reduced in the silenced locations but not eliminated. The complementary mass spectrometry …
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Enrichment of tomatoes and broccoli with specific bioactives for the reduction of prostate carcinogenesis
… accumulation of lycopene, phytofluene, and phytoene. These results demonstrate that the bioactive content of vegetables affects both tissue content of bioactives and activity of detoxification enzymes. Enhancing bioactive content of tomatoes and broccoli may enhance efficacy in the …
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Reducing the risk of prostate cancer with tomato and soy bioactives
… the tomato carotenoids, lycopene, β-carotene, phytoene, and phytofluene, receive much of the attention regarding PCa incidence. As tomato carotenoids are lipophilic, strategies to enhance absorption and tissue distribution have been of interest. Evidence suggests that co-consumption of tomato …
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Dietary interventions for reduction of prostate carcinogenesis in rodent models
… consuming TP+SG had significantly lower serum phytoene, phytofluene, and lycopene compared to rats consuming TP alone (p<0.05). In the 25-week trial, lycopene bioaccumulation was significantly lower in the testes, seminal vesicles and ventral prostate of rats that consumed TP+SG compared to TP …
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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: …