Carotenoids are extracted and/or enriched from a mixture containing such
compounds. The extraction/enrichment process involves the use of
liquefied or supercritical solvents to extract lipids and carotenoids
from carotenoid-containing substrates. The extraction process can also be
performed in two steps in which lipids and carotenoids are first removed
from a carotenoid-containing substrate with a liquefied or supercritical
solvent, and subsequently a liquefied or supercritical gas is used to
separate the lipids from the carotenoids. The two step process can be
reversed to first extract lipids with the liquefied or supercritical gas,
and subsequently use the solvent to extract the carotenoids. The process
is also applicable to yield an organic solvent-free product from a
carotenoid-containing source that was first extracted using an organic
solvent.