What is BETA-CAROTENE? What does BETA-CAROTENE mean? BETA-CAROTENE meaning – BETA-CAROTENE pronunciation – BETA-CAROTENE definition – BETA-CAROTENE explanation – How to pronounce BETA-CAROTENE?
Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license.
ß-Carotene is an organic, strongly colored red-orange pigment abundant in plants and fruits. It is a member of the carotenes, which are terpenoids (isoprenoids), synthesized biochemically from eight isoprene units and thus having 40 carbons. Among the carotenes, ß-carotene is distinguished by having beta-rings at both ends of the molecule. ß-Carotene is biosynthesized from geranylgeranyl pyrophosphate.
ß-Carotene is the most common form of carotene in plants. When used as a food coloring, it has the E number E160a.:119 The structure was deduced by Karrer et al. in 1930. In nature, ß-carotene is a precursor (inactive form) to vitamin A via the action of beta-carotene 15,15′-monooxygenase.
Isolation of ß-carotene from fruits abundant in carotenoids is commonly done using column chromatography. It can also be extracted from the beta-carotene rich algae, Dunaliella Salina. The separation of ß-carotene from the mixture of other carotenoids is based on the polarity of a compound. ß-Carotene is a non-polar compound, so it is separated with a non-polar solvent such as hexane. Being highly conjugated, it is deeply colored, and as a hydrocarbon lacking functional groups, it is very lipophilic.
Post time: Feb-14-2017