20,025
edits
Changes
no edit summary
:*[[Lactose]] - One [[glucose]] and one [[galactose]] [[molecule]] bonded together.
:*[[Maltose]] - Two [[glucose]] [[molecule]]s bonded together.
====Testing For Sugars====
: [[Glucose]] and Fructose can be detected with the [[Benedict's Test]].
: [[Sucrose]] cannot be detected with the [[Benedict's Test]] unless you first react it with [[dilute]] [[Hydrochloric Acid]].
=====Method=====
: 1. A sample of food is [[dissolve]]d in [[water]].
: 2. The solution is added to blue [[Benedict's Test|Benedict's]] [[solution]] in a [[Boiling Tube|boiling tube]].
: 3. The [[solution]] is kept at 90°C for up to 10 minutes.
: 4. A colour change indicates the presence of [[glucose]] or [[fructose]]. If they are present the solution will eventually turn brick red or brown.
{| class="wikitable"
|-
|[[File:BenedictsTest.png|center|600px]]
|-
| style="height:20px; width:600px; text-align:center;" |When sugar is present the Benedict's solution turns from blue through several colours until it becomes brick red or brown.
If this was done with sucrose the Benedict's solution would stay blue.
|}