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Good sources of phenylalanine are eggs, chicken, liver, beef, milk, and soybeans. [7] Another common source of phenylalanine is anything sweetened with the artificial sweetener aspartame , such as diet drinks , diet foods and medication; the metabolism of aspartame produces phenylalanine as one of the compound's metabolites .
Animal livers are rich in iron, copper, B vitamins and preformed vitamin A.Daily consumption of liver can be harmful; for instance, vitamin A toxicity has been proven to cause medical issues to babies born of pregnant mothers who consumed too much vitamin A. [3] For the same reason, consuming the livers of some species like polar bears, dogs, or moose is unsafe.
The polar bear was given its common name by Thomas Pennant in A Synopsis of Quadrupeds (1771). It was known as the "white bear" in Europe between the 13th and 18th centuries, as well as "ice bear", "sea bear" and "Greenland bear". The Norse referred to it as isbjørn ' ice bear ' and hvitebjørn ' white bear '. The bear is called nanook by the ...
Alanine is an aliphatic amino acid, because the side-chain connected to the α-carbon atom is a methyl group (-CH 3). Alanine is the simplest α-amino acid after glycine . The methyl side-chain of alanine is non-reactive and is therefore hardly ever directly involved in protein function. [ 12 ]
Water is the most common protic solvent. Conversely, polar aprotic solvents cannot donate protons but still have the ability to dissolve many salts. [1] [2] Methods for purification of common solvents are available [3]
Protein source with lowest density of respective amino acid. Protein milkshakes, made from protein powder (center) and milk (left), are a common bodybuilding supplement Protein powders – such as casein , whey , egg , rice , soy and cricket flour – are processed and manufactured sources of protein.
Selenous acid is analogous to sulfurous acid, but it is more readily isolated. Selenous acid is easily formed upon the addition of selenium dioxide to water. As a crystalline solid, the compound can be seen as pyramidal molecules that are interconnected with hydrogen bonds. In solution it is a diprotic acid: [3] H 2 SeO 3 ⇌ H + + HSeO − 3 ...
Butanoic acid CH 3 (CH 2) 2 COOH C4:0 Valeric acid: Pentanoic acid CH 3 (CH 2) 3 COOH C5:0 Caproic acid: Hexanoic acid CH 3 (CH 2) 4 COOH C6:0 Enanthic acid: Heptanoic acid CH 3 (CH 2) 5 COOH C7:0 Caprylic acid: Octanoic acid CH 3 (CH 2) 6 COOH C8:0 Pelargonic acid: Nonanoic acid CH 3 (CH 2) 7 COOH C9:0 Capric acid: Decanoic acid CH 3 (CH 2) 8 ...