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Butyric acid (/ ˈ b j uː t ɪ r ɪ k /; from Ancient Greek: βούτῡρον, meaning "butter"), also known under the systematic name butanoic acid, is a straight-chain alkyl carboxylic acid with the chemical formula CH 3 CH 2 CH 2 CO 2 H. It is an oily, colorless liquid with an unpleasant odor.
Methyl butyrate, also known under the systematic name methyl butanoate, is the methyl ester of butyric acid. Like most esters, it has a fruity odor, in this case resembling apples or pineapples. [2] At room temperature, it is a colorless liquid with low solubility in water, upon which it floats to form an oily layer.
Isovaleric acid (3-methyl butanoic acid) is the other source of body odor as a result of actions of the bacteria Staphylococcus epidermidis, [12] which is also present in several types of strong cheese. Factors such as food, drink, gut microbiome, [13] and genetics can affect body odor. [5]
Body odor encompasses axillary (underarm) odor and foot odor. [1] It is caused by a combination of sweat gland secretions and normal skin microflora. [1] In addition, androstane steroids and the ABCC11 transporter are essential for most axillary odor. [1] [2] Body odor is a complex phenomenon, with numerous compounds and catalysts involved in ...
Isovaleric acid, also known as 3-methylbutanoic acid or β-methylbutyric acid, is a branched-chain alkyl carboxylic acid with the chemical formula (CH 3) 2 CHCH 2 CO 2 H. It is classified as a short-chain fatty acid. Like other low-molecular-weight carboxylic acids, it has an unpleasant odor. The compound occurs naturally and can be found in ...
Sweat and body odor are typically thought to go hand in hand, but experts say it's a little more complicated than that. Sweat alone doesn't have a smell, according to Harvard Health.
An unpleasant and mysterious odor has lingered in southwest Washington state, wafting over multiple communities overnight.. Cowlitz County Emergency Management Services began to field 911 calls ...
It has a characteristic odor like rancid butter [14] (4-carbon organic compounds take the root, butyl, which is in turn from butyric which is in turn from the Latin word for butter and the Greek, βούτυρον) but anosmia for it has been reported in about 2.5% of people. [15] The metabolism of isobutyric acid in plants has been studied. [16]