*

Reducing street n., plural: reducing sugars Definition: a sugar the serves as a reducing agent


Why is sucrose not a to reduce sugar?

Sucrose is a nonreducing sugar. In sucrose, there room glycosidic bonds between their anomeric carbons to retain the cyclic kind of sucrose, avoiding its conversion into the kind of an open chain with an aldehyde group. Contrarily, maltose and also lactose, which space the reduce sugar, have a free anomeric carbon the can gain converted into an open-chain type by developing a bond v the aldehyde group.

You are watching: What is a non reducing sugar

*
Figure 1: Chemical structure of Glucose, Fructose, and Sucrose. Source: Maria Victoria Gonzaga that historicsweetsballroom.com.

Is strength a reduce sugar?It need to be remembered below that starch is a non-reducing sugar together it does no have any kind of reducing group present.


Benedict Test

In the Benedict test, the food samples native which the existence of reducing sugar has to be detected are liquified in water, and also after this, a very tiny amount the Benedict’s reagent is added after which the solution begins to cool down. After about ten minutes the systems starts to adjust its color. If the color transforms to blue it method that over there is no reducing street present. But if the color changes to green, yellow, orange, red, and also then ultimately to dark red or brown color confirms the existence of reducing sugar in the food.

See more: What Is The Lcm Of 12 And 14 Using Lcm Calculator, Find Lcm Of 12 And 14

The chemistry composition that the Benedict solution claims that it is make of one anhydrous solution of salt citrate, salt carbonate, and also copper II sulfate pentahydrate. During its reaction through the reduce sugar, the blue copper sulfate in the solution is converted into red-brown copper sulfide. It is worth mentioning below that this tests only present the qualitative evaluation of to reduce sugar.

*
Figure 2: Benedict’s Test results for levels of reducing Sugars. Source:Modified through Maria Victoria Gonzaga of biologic Online, indigenous the functions of Thebiologyprimer (A)- (diagram) and Psgs123xyz (B) – (diagram), both in CC0 license.