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The phycobilins are especially efficient at absorbing red, orange, yellow, and green light, wavelengths that are not well absorbed by chlorophyll a. [2] Organisms growing in shallow waters tend to contain phycobilins that can capture yellow/red light, [ 3 ] while those at greater depth often contain more of the phycobilins that can capture ...
High levels of lead were found in 12 brands of cinnamon powder and multi-spice powders, according to testing released Thursday by Consumer Reports, a nonprofit that helps consumers evaluate goods ...
The ground cinnamon powders and spice blends tested by Consumer Reports showed lead levels above 1 part per million (ppm), which is a level used by New York state to indicate products that should ...
Phycoerythrin (PE) is a red protein-pigment complex from the light-harvesting phycobiliprotein family, present in cyanobacteria, [1] red algae [2] and cryptophytes, [3] accessory to the main chlorophyll pigments responsible for photosynthesis.The red pigment is due to the prosthetic group, phycoerythrobilin, which gives phycoerythrin its red color.
Phycocyanin (αβ) monomer Phycocyanin (αβ) 6 hexamer. Phycocyanin shares a common structural theme with all phycobiliproteins. [4] The structure begins with the assembly of phycobiliprotein monomers, which are heterodimers composed of α and β subunits, and their respective chromophores linked via thioether bond.
Consumer Reports (CR), formerly Consumers Union (CU), is an American nonprofit consumer organization dedicated to independent product testing, investigative journalism, consumer-oriented research, public education, and consumer advocacy.
The spectral property of phycobiliproteins are mainly dictated by their prosthetic groups, which are linear tetrapyrroles known as phycobilins including phycocyanobilin, phycoerythrobilin, phycourobilin and phycobiliviolin. The spectral properties of a given phycobilin are influenced by its protein environment.
Pigment color differs from structural color in that it is the same for all viewing angles, whereas structural color is the result of selective reflection or iridescence, usually because of multilayer structures. For example, butterfly wings typically contain structural color, although many butterflies have cells that contain pigment as well. [3]