are abundant in dark green leafy vegetables such as spinach and kale, as well as yellow and orange fruits and vegetables such as peppers (27)
To cope with widely fluctuating light levels, many phytoplankton have certain red accessory pigments called xanthophylls
that act like gatekeepers.
Seasonal changes in leaf antioxidant systems and xanthophylls
cycle characteristics in Taxus x media growing in sun and shade environments.
The use of synthetic preservatives to stabilize xanthophylls
(as some manufacturers of feed-grade marigold products do) was completely and demonstrably eliminated.
Resonance The rapid transfer of energy between pigments, possible through the close proximity of the electron orbitals of the pigments that are tightly packed in the thylakoid membrane Stroma The solution surrounding the thylakoid membranes Thylakoid The photosynthetic membranes inside the chloroplast Xanthophylls
A class of carotenoids found in the antenna complex
The plant synthesizes both carotenes like lycopene; [beta], [psi]-carotene; [beta], [beta]-carotene and xanthophylls
like violaxanthin; lutein; rubixanthin.
9] are types of xanthophylls
(Faulks, et al, 2001).
The absorption of carotenes and xanthophylls
was measured at 448 nm (Swain, 1985; Bengtsson & Enell, 1986).
In its absence, cyclic carotenoids and derived xanthophylls
would not form in non-green tissues, as has been shown with the tangerine mutation in tomato fruit and in etioplasts from the Arabidopsis ccr2 mutant, both lacking functional CRTISO (Isaacson et al.
Carotenes and their cousins, the xanthophylls
(lutein and zeaxanthin), are precursors to vitamin A -- critical to numerous body processes including cell differentiation, the immune system, vision, and bone growth.
b): mycotoxin sequestrant, (c): saponified xanthophylls
of Aztec marigold (yellow, 15ppm), (d): red xanthophylls
(cantaxanthin, 10 ppm), (e): Furazolidon-bacitracin-zinc TABLE III AVERAGE RESULTS OF PERFORMANCE PARAMETERS OF HENS FED WITH DIFFERENT SHRIMP BYPRODUCT MEAL (SBM) INCLUSION LEVELS Egg Egg SBM production weight Feed (%) (%) (g) conversion 0 84.
All potatoes have carotenoids, called xanthophylls
, in the flesh.