acyl

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Related to acyl group: choline

acyl

[′a·səl]
(organic chemistry)
A radical formed from an organic acid by removal of a hydroxyl group; the general formula is RCO, where R may be aliphatic, alicyclic, or aromatic.
References in periodicals archive ?
It is postulated that position and numbers of hydroxyl group in anthrarobin are responsible for antioxidant potential and the activity decreases with the substitution of acyl groups at various positions in synthesized derivatives.
Further studies about the effect of type and proportion of fatty acyl groups on the emulsifying and associative properties of the CMC derivatives will be the subject of future investigations.
However, it was also demonstrated that the acyl-carnitine pool could act as a source of acyl groups, via the CoA pool, for the incorporation into lipids when energy, required to activate free fatty acids, is limited (23).
Therefore, acyl groups defined as, for example, 34:1, almost certainly indicate mismatched acyl chains (18-carbon paired with 16-carbon chains) because 17-carbon acyl chains comprise, at best, a small fraction of the fatty acids in wheat plants (Chirkova et al., 1981).
The proportion of phospholipids with acyl groups consisting of 30 or 34 carbons, and hence consisting of mismatched acyl chain lengths, differed significantly among the cultivars at the start of cold acclimation, but the cultivars were statistically equal after 1 wk and through the remaining 4 wk (data not shown).
Both TGA and differential scanning calorimetry (DSC) analyses indicated that the introduction of acyl groups disrupted the hydrogen bonding of chitosan, the effect was more prominent as the degree of substitution and chain length of LChA increased.
The purpose of this study is to investigate the effects of introducing hydrophobic acyl groups with different chain length on the thermal properties of low molecular weight chitosan.
Measurement of GALC activity with a series of substrates that differed in the lengths of their fatty acyl groups revealed that C8:0 ceramide gives fivefold higher activity than substrates containing ceramides with the longer chain fatty acids found in natural ceramides (12), a factor that was important in our ability to detect GALC in dried blood spots.
Major fatty acyl groups found in peanut oil are palmitate (10%), a saturated fatty acid, oleate (36-67%), a monounsaturated fatty acid, and linoleate (15-43)% that contains a second double bond.
Cardiolipin (CL) [1] is a unique phospholipid with a dimeric structure (diphosphatidylglycerol) that contains four acyl groups and carries two negative charges.