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Butanone, also known as methyl ethyl ketone (MEK) or ethyl methyl ketone, [a] is an organic compound with the formula CH 3 C(O)CH 2 CH 3. This colorless liquid ketone has a sharp, sweet odor reminiscent of acetone .
Diacetyl occurs naturally in alcoholic beverages and some cheeses and is added as a flavoring to some foods to impart its buttery flavor. Chronic inhalation exposure to diacetyl fumes is a causative agent of the lung disease bronchiolitis obliterans , commonly known as " popcorn lung ".
In the 20th century, the Braun company of Germany made a cordless hair styling device product that used butane as its heat source to produce steam. [29] As fuel, butane is often mixed with small amounts of mercaptans to give the unburned gas an offensive smell easily detected by the human nose. In this way, butane leaks can easily be identified.
Most fatty alcohols in nature are found as waxes, which are esters of fatty acids and fatty alcohols. [1] They are produced by bacteria, plants and animals for purposes of buoyancy, as source of metabolic water and energy, biosonar lenses (marine mammals) and for thermal insulation in the form of waxes (in plants and insects). [3]
This makes them amphiphilic molecules (having both hydrophobic and hydrophilic portions). In the case of cholesterol, the polar group is a mere -OH group (hydroxyl or alcohol). Lipids in food include the oils of such grains as corn, soybean, from animal fats, and are parts of many foods such as milk, cheese, and meat. They also act as vitamin ...
The U.S. Food and Drug Administration (FDA) announced a new definition of “healthy” food for the first time in 30 years. The new definition will apply to manufacturers who want to call their ...
1-Butanol occurs naturally as a minor product of the ethanol fermentation of sugars and other saccharides [6] and is present in many foods and drinks. [ 7 ] [ 8 ] It is also a permitted artificial flavorant in the United States, [ 9 ] used in butter, cream, fruit, rum, whiskey, ice cream and ices, candy, baked goods, and cordials. [ 10 ]
The core Personal Consumption Expenditures (PCE) index, which strips out food and energy costs and is the Fed's preferred inflation gauge, showed prices increased 2.8% annually in October. This ...