Oct 31
2.7 Test Starch and Glucose
Describe the test for glucose and starch
GLUCOSE:
- Get glucose powder and dissolve it in a test tube with water
- Add Benedict Reagent (blue)
- Take it and place it in a water bath ( temperate of water bath should be around 60 degrees centegrade)
- After 2/3 minutes remove the test tube
- The colour should change from blue to orange
IF the solution of glucose is weak, the solution would be green
STARCH
- Get starch powder and add some in a spotting tail
- Add Iodine Solution (Pottasium Iodide)
- Solution should change from brown to dark blue or black
