aldehyde

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aldehyde

 [al´dĕ-hīd]
an organic compound containing the aldehyde functional group (-CHO); that is, one with a carbonyl group (C=O) located at one end of the carbon chain.

al·de·hyde

(al'dĕ-hīd),
A compound containing the radical -CH=O, reducible to an alcohol (CH2OH) and oxidizable to a carboxylic acid (COOH), for example, acetaldehyde.

aldehyde

An organic compound with a formyl group (R-CHO), which is double-bonded to an O2 (i.e., a carbonyl group, C=O), single-bonded to a hydrogen and single-bonded to another group (e.g., methane, benzene, hydrogen, etc.). The aldehydes in some essential oils contribute to their pleasant odoor, including vanillin, cilantro and cinnamaldehyde.

Example
Acetaldehyde (CH3CHO), butyraldehyde (CH3(CH2)2CHO).

al·de·hyde

(al'dĕ-hīd)
A compound containing the radical -CH=O, reducible to an alcohol (-CH2OH), oxidizable to a carboxylic acid (-COOH); e.g., acetaldehyde.

aldehyde

A product of dehydrogenated (metabolized) alcohol, hence the name. Aldehydes cause most of the toxic effects of bibulous overindulgence (hangover).

al·de·hyde

(al'dĕ-hīd)
A compound containing the radical -CH=O, reducible to an alcohol (-CH2OH), oxidizable to a carboxylic acid (-COOH); e.g., acetaldehyde.
References in periodicals archive ?
This may explain the continuity of the synthesis reaction for samples "a" and "b" but not for sample "c" where the initiation step successfully generated the CMS* radical which, in its turn, initiates an oxidation reaction resulting in the generation of new aldehydic end groups capable of reducing [Ag.sup.+] to [Ag.sup.0].
The stretching vibrations at 3350-3230 cm-1 and at 2840 cm-l attributed to free aldehydic carbonyl group present in sugars were absent in the FTIR spectra of these complexes.
Both cinnamaldehyde and myrtenal have carbon--carbon double bond conjugated with the aldehydic carbonyl group and whereas citronellal lacks such features.
The spectral changes during the oxidation of the aldehydic acids by potassium permanganate in alkaline medium (pH [approximately equal to] 12) was monitored in a thermostated cell compartment within [+ or -] 0.05[degrees]C using Shimadzu UV-2101/3101 PC.
Tiku et al (38) showed that when chondrocytes were submitted to an oxidative burst, vit E reduced the catabolism of collagen by preventing the protein oxidation mediated by aldehydic down products of lipid peroxidation.
The NMR Spectrum of the dialdehyde that we prepared shows singlets at 11.42 (phenolic), 10.2 (aldehydic), 7.74 (aromatic), and 2.36 ppm (methyl) and is consistent with the assigned structure and matches with that given in literature (Serwicka and Bahamwoski, 2004).
For example, a mere change of fragrance from citrus to a vanilla-type aldehydic note can cause color and odor instability issues when amine-type ingredients, such as amino acids, peptides, or hydrolyzed proteins, are also present in that "base" formulation.
(2001), who found that the hens fed feed levels with 80 mg/kg vitamin E prevented cytotoxic aldehydic lipid peroxidation (MDA) in PUFA-enriched eggs.
FTIR spectra of the membrane indicated the presence of free hydroxyl groups and absence of free aldehydic groups.