Difference Between Natural and Synthetic Forms
Astaxanthin has two chiral centers, at the 3- and 3′-positions. Therefore, there are three stereoisomers; (3R,3′R), (3R,3′S) (meso), and (3S,3′S). Synthetic astaxanthin contains a mixture of the three, in approximately 1:2:1 proportions. Naturally occurring astaxanthin varies considerably from one organism to another. The astaxanthin in fish is of whatever stereoisomer the fish ingested. The astaxanthin produced by haematococcus pluvialis, which is commonly used in the feed of animals that are in turn consumed by humans, is the (3S,3′S) stereoisomer.
Read more about this topic: Astaxanthin
Famous quotes containing the words difference between, difference, natural, synthetic and/or forms:
“The first idea that the child must acquire, in order to be actively disciplined, is that of the difference between good and evil; and the task of the educator lies in seeing that the child does not confound good with immobility and evil with activity.”
—Maria Montessori (18701952)
“The paranoiac is the exact image of the ruler. The only difference is their position in the world.... One might even think the paranoiac the more impressive of the two because he is sufficient unto himself and cannot be shaken by failure.”
—Elias Canetti (b. 1905)
“You must train the children to their studies in a playful manner, and without any air of constraint, with the further object of discerning more readily the natural bent of their respective characters.”
—Plato (c. 427347 B.C.)
“In every philosophical school, three thinkers succeed one another in the following way: the first produces out of himself the sap and seed, the second draws it out into threads and spins a synthetic web, and the third waits in this web for the sacrificial victims that are caught in itand tries to live off philosophy.”
—Friedrich Nietzsche (18441900)
“The time will come when the evil forms we have known can no more be organized. Mans culture can spare nothing, wants all material. He is to convert all impediments into instruments, all enemies into power.”
—Ralph Waldo Emerson (18031882)