Results 21 to 30 of about 15,608 (189)
Journal of Lipid Research, 2016 The xanthophylls, lutein and zeaxanthin, are dietary carotenoids that selectively accumulate in the macula of the eye providing protection against age-related macular degeneration.
Sara E. Thomas, Earl H. Harrison
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Frontiers in Nutrition, 2022 BackgroundLutein and zeaxanthin are fat-soluble, dietary carotenoids with high concentrations in human brain tissue. There have been a number studies confirming an association between lutein and zeaxanthin and cognitive function.PurposeExamine the ...
Adrian L. Lopresti +4 more
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Bioresources and Bioprocessing, 2018 Marigold petals, the current commercial source for lutein and zeaxanthin are harvested through a labor-intensive operation with downstream purification requiring multiple processing steps involving various harsh solvents.
Jinsha Li, Abigail S. Engelberth
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Foods, 2023 In this study, porous starch was modified using pulsed electric field (PEF) pretreatment and alcoholic–alkaline treatment to prepare porous granular cold-water-soluble starch (P-GCWSS).
Huanqing Lei +4 more
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Zeaxanthin epoxidation - an in vitro approach.
Acta Biochimica Polonica, 2012 Zeaxanthin epoxidase (ZE) is an enzyme operating in the violaxanthin cycle, which is involved in photoprotective mechanisms. In this work model systems to study zeaxanthin (Zx) epoxidation were developed. Two assay systems are presented in which epoxidation of Zx was observed.
Kuczyńska, Paulina +6 more
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Journal of Ophthalmology, 2015 The effects of lutein and zeaxanthin on lipopolysaccharide- (LPS-) induced secretion of IL-8 by uveal melanocytes (UM) were tested in cultured human UM. MTT assay revealed that LPS (0.01–1 μg/mL) and lutein and zeaxanthin (1–10 μM) did not influence the ...
Shih-Chun Chao +4 more
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Factors Differentiating the Antioxidant Activity of Macular Xanthophylls in the Human Eye Retina
Antioxidants, 2021 Macular xanthophylls, which are absorbed from the human diet, accumulate in high concentrations in the human retina, where they efficiently protect against oxidative stress that may lead to retinal damage.
Justyna Widomska +2 more
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The Photobiology of Lutein and Zeaxanthin in the Eye [PDF]
Journal of Ophthalmology, 2015 Lutein and zeaxanthin are antioxidants found in the human retina and macula. Recent clinical trials have determined that age- and diet-related loss of lutein and zeaxanthin enhances phototoxic damage to the human eye and that supplementation of these carotenoids has a protective effect against photoinduced damage to the lens and the retina.
Joan E. Roberts, Jessica Dennison
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Research Progress on the Zeaxanthin Extraction Technology and Biological Activity Mechanism
Liang you shipin ke-jiZeaxanthin is a carotenoid with notable biological activity, demonstrates effective visual protection, antioxidant properties, and anti-tumor effects. However, zeaxanthin is unstable under light conditions and prone to reactions.
LI Chao-qi +5 more
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Verification of Meso-Zeaxanthin in Fish [PDF]
Journal of Food Processing & Technology, 2014 The carotenoids lutein (L), zeaxanthin (Z), and meso-zeaxanthin (MZ) accumulate in the central retina (the macula), where they are collectively known as macular pigment (MP). MP has been shown to enhance visual function in both diseased and non-diseased retinae, and therefore an understanding and confirmation of, the origins of these carotenoids is ...
Nolan, John M +5 more
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