Results 41 to 50 of about 3,830 (170)
Journal of Lipid Research, 1974 A clear separation of retinol, retinal, and retinoic acid has been achieved by liquid–gel partition chromatography on Sephadex LH-20 with solvent mixtures of chloroform, Skellysolve B, and methanol.
Y.L. Ito +3 more
doaj +1 more source
Degradation Mechanisms, Encapsulation‐Based Stabilization, and Analytical Detection of Vitamin A
Journal of the American Oil Chemists' Society, Volume 103, Issue 9, Page 1079-1097, September 2026.ABSTRACT Vitamin A is an important lipid‐soluble micronutrient essential for vision, immune function, and overall growth and development. However, vitamin A is unstable and susceptible to environmental factors because of its conjugated structure and inherent chemical reactivity.
Latheesha Abeywardana +5 more
wiley +1 more source
Sensitive Analysis of Retinyl Esters by Isocratic Adsorption Chromatography [PDF]
Clinical Chemistry and Laboratory Medicine, 1989 A sensitive method for the determination of retinyl esters, including their geometric isomers, by isocratic adsorption HPLC is described. The development of a special recycling system allows the separation of all-trans-, 13-cis, 11-cis- and 9-cis-retinyl palmitate, -stearate, -oleate, -palmitoleate and -linoleate with short retention times and high ...
Biesalski, H. K., Weiser, H.
openaire +3 more sources
Fatty acid transport protein 1 regulates retinoid metabolism and photoreceptor development in mouse retina. [PDF]
PLoS ONE, 2017 In retinal pigment epithelium (RPE), RPE65 catalyzes the isomerization of all-trans-retinyl fatty acid esters to 11-cis-retinol in the visual cycle and controls the rhodopsin regeneration rate.
Aurélie Cubizolle +4 more
doaj +1 more source
Phasor‐Based Spatio‐Spectral Segmentation for Hyperspectral Fluorescence Microscopy
Journal of Biophotonics, Volume 19, Issue 9, September 2026.Spatially‐corrected density peak clustering (SC‐DPC) enables high‐accuracy segmentation of hyperspectral fluorescence microscopy data in the presence of significant spectral and spatial overlap between fluorophores. Validated on retinal imaging, SC‐DPC effectively separates overlapping fluorophore spectra in photon‐starved conditions, offering superior
Maciej Barna +4 more
wiley +1 more source
Plasma kinetics of vitamin A in humans after a single oral dose of [8,9,19-13C]retinyl palmitate
Journal of Lipid Research, 1996 The kinetics of vitamin A and its major metabolites were investigated in humans. Eleven healthy male subjects ingested 105 mumol (100,000 IU) of [8,9,19-13C]retinyl palmitate in an oily solution.
D V Reinersdorff, E Bush, D J Liberato
doaj +1 more source
Vitamins in cosmetic products: Current opinions and practice [PDF]
Arhiv za farmaciju, 2017 Vitamins A, E, C, B3 and provitamin B5 (panthenol), and their numerous derivatives are most widely used in cosmetic products. Cosmetic retinoids (retinol, retinaldehyde, and retinyl esters) have been used for years in cosmetic treatments of (photo)aged ...
Vasiljević Dragana +2 more
doaj +1 more source
Foods, 2023 Wheat bran can be used as a cost-effective food ingredient to stabilise vitamin A. However, wheat bran endogenous enzymes have been shown to reduce vitamin A stability. In this study, we elucidated the mechanism for this negative effect in an accelerated
Eline Van Wayenbergh +4 more
doaj +1 more source
Isolation and Characterization of a Microsomal Acid Retinyl Ester Hydrolase [PDF]
Journal of Biological Chemistry, 2005 Previous work demonstrated both acid and neutral, bile salt-independent retinyl ester hydrolase activities in rat liver homogenates. Here we present the purification, identification, and characterization of an acid retinyl ester hydrolase activity from solubilized rat liver microsomes.
Thomas, Linke +2 more
openaire +2 more sources
N-3 fatty acids and chylomicron metabolism in the rat
Journal of Lipid Research, 1997 Dietary n-3 fatty acids (FAs) reduce postprandial triacylglycerol concentrations in humans by unknown mechanisms. Our goals were to reproduce this phenomenon in the rat, and then to determine the mechanism.
W S Harris +5 more
doaj +1 more source