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The dextrose equivalent gives an indication of the average degree of polymerisation (DP) for starch sugars. As a rule of thumb, DE × DP = 120. As a rule of thumb, DE × DP = 120. In all glucose polymers , from the native starch to glucose syrup , the molecular chain ends with a reducing sugar, containing a free aldehyde in its linear form.
Maltodextrins are classified by a dextrose equivalent (DE), [5] [6] a number between 3 and 20 that corresponds to the number of free chain ends in a certain sample. A lower DE value means the polymer chains are longer (contain more glucose units) whereas a higher DE value means the chains are shorter. [6]
Reducing form of glucose (the aldehyde group is on the far right). A reducing sugar is any sugar that is capable of acting as a reducing agent. [1] In an alkaline solution, a reducing sugar forms some aldehyde or ketone, which allows it to act as a reducing agent, for example in Benedict's reagent.
Dextrose equivalent, the relative sweetness of sugars; Diatomaceous earth, a naturally occurring, soft, siliceous sedimentary rock mineral; Differential equation, an equation which derivatives of a function appear as variables; Differential evolution, a method of mathematical optimization
Fehling's can be used to screen for glucose in urine, thus detecting diabetes. Another use is in the breakdown of starch to convert it to glucose syrup and maltodextrins in order to measure the amount of reducing sugar , thus revealing the dextrose equivalent (DE) of the starch sugar .
Glucose syrup on a black surface. Glucose syrup, also known as confectioner's glucose, is a syrup made from the hydrolysis of starch. Glucose is a sugar. Maize (corn) is commonly used as the source of the starch in the US, in which case the syrup is called "corn syrup", but glucose syrup is also made from potatoes and wheat, and less often from barley, rice and cassava.
The Methods Book also contains polynomials and tables (derived from the polynomials) [4] which relate the refractive index of solutions of pure sucrose, glucose, fructose and invert sugar to the strength of those solutions.
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