Results 11 to 20 of about 16,041 (278)

Xanthophylls: potential benefits in protecting against UV burns [PDF]

open access: yesBrazilian Journal of Biology
Exposure to ultraviolet (UV) radiation is a significant risk factor for sunburn (solar erythema) and skin cancer. Current treatments focus primarily on symptom relief, making the need for new therapeutic approaches urgent.
D. Q. Tavares   +5 more
doaj   +3 more sources

Localization and Orientation of Xanthophylls in a Lipid Bilayer

open access: yesScientific Reports, 2017
Xanthophylls (polar carotenoids) play diverse biological roles, among which are modulation of the physical properties of lipid membranes and protection of biomembranes against oxidative damage.
W. Grudziński   +6 more
semanticscholar   +2 more sources

A 3-hydroxy %-end group in xanthophylls is preferentially oxidized to a 3-oxo ε-end group in mammals[S]

open access: yesJournal of Lipid Research, 2015
We previously found that mice fed lutein accumulated its oxidative metabolites (3′-hydroxy-ε,ε-caroten-3-one and ε,ε-carotene-3,3′-dione) as major carotenoids, suggesting that mammals can convert xanthophylls to keto-carotenoids by the oxidation of ...
Akihiko Nagao   +5 more
doaj   +2 more sources

Lack of a Synergistic Effect on Cardiometabolic and Redox Markers in a Dietary Supplementation with Anthocyanins and Xanthophylls in Postmenopausal Women

open access: yesNutrients, 2019
Fruits and vegetables are pivotal for a healthy diet due partly to their content in bioactive compounds. It is for this reason that we conducted a parallel study to unravel the possible effect on cardiometabolic parameters of the ingestion of ...
Rocio Estévez-Santiago   +2 more
exaly   +2 more sources

Spectroscopic response of carotenoids in chromoplasts in sunflower inflorescence [PDF]

open access: yesScientific Reports
Abstract The vibrant yellow color of the common sunflower (Helianthus annuus L.) ray flower ligules comes from the presence of xanthophylls. The dyes contained by chromoplasts of globular shape were identified in LC-MS studies as lutein derivatives ...
Justyna Wiland-Szymańska   +5 more
doaj   +2 more sources

Zeaxanthin and Other Carotenoids: Roles in Abiotic Stress Defense with Implications for Biotic Defense [PDF]

open access: yesPlants
Xanthophylls are carotenoids with diverse roles in stress protection across all taxa of life. This review highlights chloroplast-localized xanthophylls (with a focus on zeaxanthin) of plants by presenting an overview of the protective effects of ...
Barbara Demmig-Adams   +3 more
doaj   +2 more sources

Xanthophylls. [PDF]

open access: yesAdvances in Nutrition, 2018
S. E. Thomas, Elizabeth J. Johnson
semanticscholar   +4 more sources

A role for &bgr;,&bgr;-xanthophylls in Arabidopsis UV-B photoprotection [PDF]

open access: yesJournal of Experimental Botany, 2018
Plastidial isoprenoids, such as carotenoids and tocopherols, are important anti-oxidant metabolites synthesized in plastids from precursors generated by the methylerythritol 4-phosphate (MEP) pathway.
Julia Emiliani   +6 more
semanticscholar   +2 more sources

Carotenoid β-Ring Hydroxylase and Ketolase from Marine Bacteria—Promiscuous Enzymes for Synthesizing Functional Xanthophylls

open access: yesMarine Drugs, 2011
Marine bacteria belonging to genera Paracoccus and Brevundimonas of the α-Proteobacteria class can produce C40-type dicyclic carotenoids containing two β-end groups (β rings) that are modified with keto and hydroxyl groups.
Norihiko Misawa
doaj   +2 more sources

The roles of specific xanthophylls in photoprotection. [PDF]

open access: yesProceedings of the National Academy of Sciences, 1997
Xanthophyll pigments have critical structural and functional roles in the photosynthetic light-harvesting complexes of algae and vascular plants. Genetic dissection of xanthophyll metabolism in the green alga Chlamydomonas reinhardtii revealed functions for specific xanthophylls in the ...
K. Niyogi, O. Björkman, A. Grossman
semanticscholar   +3 more sources

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