Results 281 to 290 of about 26,392 (328)
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Orientation of xanthophylls in phosphatidylcholine multibilayers
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1990Oriented multibilayers of dimyristoyl phosphatidylcholine (DMPC) modified with violaxanthin or zeaxanthin were examined by X-ray diffractometry and linear dichroism. It appears that pigment molecules and the normal to the bilayer plane form an angle of 24-25 degrees.
W I, Gruszecki, J, Sielewiesiuk
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Xanthophylls from blood to retina
Acta Ophthalmologica, 2010AbstractXanthophylls are dietary lipophilic compounds. Among them, lutein and zeaxanthin are the major carotenoids found in the human lens and retina, and referred as macular pigment within the retina. Lutein and zeaxanthin cannot be synthesized endogenously. They may therefore be considered as essential and must be provided by adequate dietary intakes.
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Xanthophyll Pigmentation in Sheep Fat
Nature, 1962CASTLE1 concluded from the observations of Zophoniasson that the yellow fat appearing in some Icelandic sheep is due to a simple recessive character in inheritance. I have recently examined the chemical nature of the yellow pigments in the adipose tissue of some Irish sheep.
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The Chemistry of Novel Xanthophyll Carotenoids
The American Journal of Cardiology, 2008Natural product isolates are typically not developed as drug candidates because of the difficulty in obtaining the desired stable molecular orientation (ie, stereochemistry), purity, and scale required to meet pharmaceutical industry standards. Recent advances in medicinal and process chemistry have played key roles in transforming a class of dietary ...
Henry, Jackson +2 more
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Protective role of xanthophylls
Acta Ophthalmologica, 2010AbstractXanthophylls, also known as carotenoids are a group of natural fat‐soluble pigments that are especially abundant in green and yellow‐orange fruits and vegetables. Based on epidemiologic data, it is now evident that carotenoids provide health benefits and particularly in eye diseases.
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1985
Publisher Summary This chapter focuses on Xanthophyll cycles that are light-dependent, reversible interconversions of 5,6-epoxycarotenoids in photosynthetic organisms. Xanthophyll-cycle activity is indicated by stoichiometric shifts in pigment concentrations under illumination or other experimental conditions.
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Publisher Summary This chapter focuses on Xanthophyll cycles that are light-dependent, reversible interconversions of 5,6-epoxycarotenoids in photosynthetic organisms. Xanthophyll-cycle activity is indicated by stoichiometric shifts in pigment concentrations under illumination or other experimental conditions.
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Journal of Food Science, 1961
SUMMARY The carotenoids of ripe tomatoes were found to contain about 6% xanthophylls; the composition of the latter was about 15% monols, 49% diols, 4% monoepoxide diols, 22% diepoxide diols, and 11% polyols. The diol and polyol xanthophylls were much like those of green leaves, with lutein the major pigment, somewhat smaller amounts ...
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SUMMARY The carotenoids of ripe tomatoes were found to contain about 6% xanthophylls; the composition of the latter was about 15% monols, 49% diols, 4% monoepoxide diols, 22% diepoxide diols, and 11% polyols. The diol and polyol xanthophylls were much like those of green leaves, with lutein the major pigment, somewhat smaller amounts ...
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Journal of Applied Phycology, 2019
A. Zarekarizi, L. Hoffmann, D. Burritt
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A. Zarekarizi, L. Hoffmann, D. Burritt
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Xanthophylls in Poultry Feeding
2008Since most consumers associate an intense colour of food with healthy animals and high food quality, xanthophylls are widely used as feed additives to generate products that meet consumers’ demands. An important large-scale application is in poultry farming, where xanthophylls are added to feed to give the golden colour of egg yolk that is so much ...
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