polyisoprenoid

polyisoprenoid

 [pol″e-i´so-pre-noid″]
any isoprenoid that contains multiple isoprene units, such as rubber.

polyisoprenoid

/poly·iso·pre·noid/ (-i´so-pre-noid″) any isoprenoid that contains multiple isoprene units, such as rubber.
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These are produced from 8 isoprene molecules and contain 40 carbon atoms and are also known as tetraterpenoids with polyisoprenoid structure having a long conjugated double bond system forming the backbone of the molecule, which may be terminated by cyclic end groups that contain oxygen-bearing substitutes.
It is isolated from the neutral fraction of an extract of spruce needles and belongs to the group of polyprenols: polyisoprenoid alcohols that are transformed into dolichols in the liver (Blogger et al.
Austin, a novel polyisoprenoid mycotoxin from Aspergillus ustus.
Sterols are hydroxylated steroids, a class of polyisoprenoid molecules found naturally in almost all living organisms.
The lipids can be saturated hydrocarbons, fatty acids such as stearic acid, or glycerides such as tristearin, polyisoprenoids, or cholesterol.
2], biopolymers (nucleic acids, polyamides, polysaccharides, polyesters, polyisoprenoids and polyphenols), their derivatives, and their blends and composites.
Polyhydroxyalkanoates, only recently appreciated as ranking with polysaccharides, proteins, polynucleotides and polyisoprenoids as a class of physiologically important biopolymers, have brought a solution to the search for biodegradable plastics.