Definitions for "Carotenoids"
Substance found in yellow and orange fruits and vegetables and in dark green, leafy vegetables. One type of carotenoid (Beta Carotene) is converted to vitamin A in the body. Plants are the source of the carotenoids found in animals.
A family of widespread natural pigments found in plants and animals. These are more than 600 known natural carotenoids, all of them synthesized only in plants. Plants are the source of the carotenoids present in animals. there is a growing body evidence that indicates the importance of certain carotenoids to our health and well being.
orange or yellow accessory pigments
Contain a conjugated double bond system of the polyene type (C-C=C-C=C). Energy absorbed by carotenoids may be transferred to chlorophyll a for photosynthesis.
The pressence of carotenoids might help to protect against the formation of singlet oxygen by blocking light transmission through the oil. But although carotenes are effective in protecting against photooxidation, their degradation by lipid peroxides is expected because of the oxidative susceptibility of the hydroxy groups and the conjugated double-bond system in the carotenoid molecule. Carotenoid is little affected by pretreatment with phosphoric acid and bleaching clay. Once in the high temperature environment of the physical refiner, carotene is subjected to thermal decomposition. Thus dark-colored palm oil will be "heat bleached" during the physical refining process, usually yielding a fully refined product that is lighter than 3.0 Red in color. However, in the absence of light, carotenoids and/or their oxidation products can act as prooxidants, and therefore the removal of these prooxidants improves the oxidative stability, visual appearance and taste of the oil.
Keywords:  intravesical, riboflavin
Intravesical Riboflavin
Keywords:  interferon, refractory
Interferon Refractory
Keywords:  photon