Evaluation of mixed natural carotenoid products as xanthophyll
sources for broiler pigmentation.
In diatoms, the transthylakoid proton gradient regulates the photoprotective non-photochemical fluorescence quen ching beyond its control on the xanthophyll
pigments can flip-flop within minutes to convert from helper into protector pigments.
Enhanced employment of the xanthophyll
cycle and thermal energy dissipation in spinach exposed to high light and N stress.
Pieters A J, Tezara W, Herrera A (2003) Operation of xanthophyll
cycle and degradation of D1 protein in the inducible CAM plant, Talinum triangulare, under water deficit.
The diatom carotenoid Diadino that is active in the xanthophyll
cycle could be transformed into Diato at high light to reduce the amount of energy reaching the photosynthetic reaction centres (Louda et al.
Role of the xanthophyll
cycle in photoprotection elucidated by measurements of light-induced absorption changes, fluorescence and photosynthesis in Hedera canadiensis.
The fraction was expected to be violaxanthin, which is a xanthophyll
with two epoxy groups having similar absorption spectra.
The results of their study add to existing observational evidence that the xanthophyll
carotenoid lutein (and its stereoisomer, zeax-anthin) may delay cataract formation.
The results add to existing observational evidence that the xanthophyll
carotenoid lutein (and its stereoisomer, zeaxanthin) may delay cataract formation.
This may simply imply that supplementation with extra lutein is not necessary because it is a readily available xanthophyll
in many vegetables.
Cool night temperatures trap the sugars and other chemical compounds in the leaves - carotene, xanthophyll
, anthocyanin and tannins.