Results 21 to 30 of about 45,171 (254)

Fossil carotenoids and paleolimnology of meromictic Mahoney Lake, British Columbia, Canada [PDF]

open access: yes, 1993
Vertical distribution of fossil carotenoids in a sediment core from meromictic Mahoney Lake was studied. Besides okenone and demethylated okenone, lutein and zeaxanthin and-carotene isomers were identified.
Sandmann, Gerhard   +7 more
core   +1 more source

Marine Carotenoids [PDF]

open access: yes, 2021
Carotenoids represent a large group of isoprenoid structures with many different structural characteristics and biological activities. They are the most important of the naturally occurring pigments and are responsible for the various colors of different

core   +2 more sources

Ruthenium porphyrin-ß-cyclodextrin complexes as supramolecular enzyme models for regioselective cleavage of carotenoids [PDF]

open access: yes, 2006
All naturally occurring vitamin A derives from enzymatic oxidative cleavage of β,β-carotene or other carotenoids with pro-vitamin A activity. Two metabolic pathways of β,β-carotene to retinal (vitamin A aldehyde) have been proposed: the central cleavage ...
Wang, Hao
core   +1 more source

Structures and functions of carotenoids bound to reaction centers from purple photosynthetic bacteria [PDF]

open access: yes, 2006
The photoprotective function of 15,15'-cis-carotenoids bound to the photosynthetic reaction centers (RCs) of purple bacteria has been studied using carotenoids reconstituted into carotenoidless RCs from Rhodobacter sphaeroides strain R26.1.
Hashimoto, H.   +10 more
core   +1 more source

Carotenoid Composition of Calendula officinalis Flowers with Identification of the Configuration of 5,8-Epoxy-carotenoids

open access: yes, 2023
The carotenoid composition of petals, florets, and full inflorescences of Calendula officinalis grown in sun and shade was investigated by the HPLC-DAD-MS method.
Veronika Nagy (2228818)   +7 more
core   +1 more source

Stable isotope dilution techniques for assessing vitamin A status and bioefficacy of provitamin A carotenoids in humans. [PDF]

open access: yes, 2005
Vitamin A deficiency is a major global public health problem. Among the variety of techniques that are available for assessing human vitamin A status, evaluating the provitamin A nutritional values of foodstuffs and estimating human vitamin A ...
Judy D Ribaya-Mercado   +19 more
core   +1 more source

Optimization and multiple in vitro activity potentials of carotenoids from marine Kocuria sp. RAM1

open access: yesScientific Reports, 2022
Marine pigmented bacteria are a promising natural source of carotenoids. Kocuria sp. RAM1 was isolated from the Red Sea Bohadschia graeffei collected from Marsa Alam, Egypt, and used for carotenoids production.
Rasha A. Metwally   +4 more
doaj   +1 more source

Properties of Carotenoids in Fish Fitness: A Review

open access: yesMarine Drugs, 2020
Carotenoids, one of the most common types of natural pigments, can influence the colors of living organisms. More than 750 kinds of carotenoids have been identified. Generally, carotenoids occur in organisms at low levels.
Toshiki Nakano, Geert Wiegertjes
doaj   +1 more source

Carotenoids in fish. XL. Carotenoids in fish from the Falklands region [PDF]

open access: yesActa Ichthyologica et Piscatoria, 1986
The authors studied, by means of column and thin layer chromatography, the occurrence of various carotenoids in 8 fish species caught off Falkland Islands (Dissostichus eleginoides, Genypterus blacodes, Macruronus magellanicus, Micromesistlus australis ...
B. Czeczuga, B. Kłyszejko
doaj   +3 more sources

Review on the Effect of Non-thermal Processing Technologies on the Bioavailability of Carotenoids in Fruits and Vegetables

open access: yesShipin gongye ke-ji, 2022
Carotenoids are a kind of fat-soluble natural pigments widely found in fruits and vegetables, having a variety of functional properties. Generally, the bioavailability of carotenoids in fruits and vegetables is low, and different processing methods will ...
Jinyan YANG   +5 more
doaj   +1 more source

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