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2-Nonenal is an unsaturated aldehyde. The colorless liquid is an important aroma component of aged beer [2] and buckwheat, and is insoluble in water. [3]
One study suggested that old person smell may be the result of 2-nonenal, an unsaturated aldehyde which is associated with human body odor alterations during aging. [3] Another study failed to detect 2-nonenal at all, but found significantly increased concentrations of benzothiazole, dimethylsulphone, and nonanal on older subjects. [4]
The detection of increasing amounts of 2-Nonenal in individuals 40 years or older suggested that 2-Nonenal contributes to the deteriorating body odor seen with aging. [40] Body Odor and Disease. In mammals, body odor can also be used as a symptom of disease.
Nonanal is an organic compound with the chemical formula CH 3 (CH 2) 7 CHO. It is one of several isomers, all are colorless oil. The nonanals are classified as aldehydes. The linear nonanal is produced commercially by the hydroformylation of 1-octene. It is used as a fragrance. [2]
Nonenal may refer to: 2-Nonenal (see, Old person smell) 6-Nonenal This page was last edited on 15 March 2021, at 04:23 (UTC). Text is available under the Creative ...
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In chemistry, acid value (AV, acid number, neutralization number or acidity) is a number used to quantify the acidity of a given chemical substance.It is the quantity of base (usually potassium hydroxide (KOH)), expressed as milligrams of KOH required to neutralize the acidic constituents in 1 gram of a sample.