- published: 22 Apr 2015
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Sucrose is the organic compound commonly known as table sugar and sometimes called saccharose. A white, odorless, crystalline powder with a sweet taste, it is best known for its nutritional role. The molecule is a disaccharide composed of the monosaccharides glucose and fructose with the molecular formula C12H22O11.
The world produced about 168 million tonnes of table sugar in 2011.
Sucrose is a molecule with five stereocenters and many sites that are reactive or can be reactive. The molecule exists as a single isomer.
In sucrose, the components glucose and fructose are linked via an ether bond between C1 on the glucosyl subunit and C2 on the fructosyl unit. The bond is called a glycosidic linkage. Glucose exists predominantly as two isomeric "pyranoses" (α and β), but only one of these forms the links to the fructose. Fructose itself exists as a mixture of "furanoses", each of which having α and β isomers, but only one particular isomer links to the glucosyl unit. What is notable about sucrose is that, unlike most disaccharides, the glycosidic bond is formed between the reducing ends of both glucose and fructose, and not between the reducing end of one and the nonreducing end of the other. This linkage inhibits further bonding to other saccharide units. Since it contains no anomeric hydroxyl groups, it is classified as a nonreducing sugar.
The Delgados were a Scottish indie rock band from Motherwell, North Lanarkshire. The band was composed of Alun Woodward (vocals, guitar), Stewart Henderson (bass), Paul Savage (drums) and Emma Pollock (vocals, guitar).
The band was formed after friends Woodward, Henderson and Savage were ejected from the band Bubblegum. Joined by Savage's then-girlfriend Pollock, the band named themselves after Tour de France winning cyclist, Pedro Delgado.
Their first commercial release came with the inclusion of their track "Liquidation Girl" on the compilation album Skookum Chief Powered Teenage Zit Rock Angst from Nardwuar the Human Serviette. Instead of signing to a record label, the band started their own, Chemikal Underground, on which they released their own records and also some from other local bands, among them Mogwai and Arab Strap. Chemikal Underground's first release was the Delgados first single "Monica Webster / Brand New Car". The single caught the attention of BBC Radio 1 DJ John Peel, and the band quickly became one of his favourites, going on to record fifteen sessions for his show.