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Generally, Benedict's test detects the presence of aldehyde groups, alpha-hydroxy-ketones, and hemiacetals, including those that occur in certain ketoses. In example, although the ketose fructose is not strictly a reducing sugar, it is an alpha-hydroxy-ketone which results to a positive test because the base component of Benedict converts it ...
This characteristic of reducing sugars is seen through a positive Benedict's Test. Lactose- N -tetraose has the oligosaccharide nomenclature β- D -galactosyl-(1→3)- N -acetyl-β- D -glucosaminyl-(1→3)-β- D -galactosyl-(1→4)- D -glucose, and consists of lactose with an additional lactose- N -biose disaccharide at the non-reducing end.
Reducing disaccharides like lactose and maltose have only one of their two anomeric carbons involved in the glycosidic bond, while the other is free and can convert to an open-chain form with an aldehyde group. The aldehyde functional group allows the sugar to act as a reducing agent, for example, in the Tollens' test or Benedict's test.
Since its discovery in 1904 until the 1960s, the Wöhlk test has mainly been used to detect the reducing disaccharide lactose in urine in medical laboratories. Although there were already a number of wet-chemical detection methods to identify sugars, such as the Fehling or Benedict test , those analyses could only differentiate between reducing ...
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The Lego Star Wars Advent calendar is consistently one of the most popular every year. The 2024 version features six characters and a host of vehicles, including X-wings, TIE fighters, and more ...
An Alabama A&M football player who suffered a head injury during a game in October has died. The university announced that linebacker Medrick Burnett Jr. passed away on Tuesday evening, a month ...
Lactose intolerance is a similar condition that reflects an individual's inability to hydrolyze the disaccharide lactose. Sucrase is secreted by the tips of the villi of the epithelium in the small intestine. Its levels are reduced in response to villi-blunting events such as celiac sprue and the inflammation associated with