B3.3 The Chemistry Of Food Organisation And The Digestive System Flashcards
1
Q
What are the three different types of food ?
A
Carbohydrates, proteins and lipids
2
Q
How Do we test for carbohydrates? Say both for starch and sugar
A
Starch- reagent iodine
if present colour changes from red to blue/ black
Sugar- reagent benidicts solution+ water Bath
turns blue- red
3
Q
How do we test for proteins ? PB
A
Reagent- biuretagent
If present changes from blue to purple
4
Q
How do we test for lipids ?
A
Reagent- ethanol
Colour change- cloudy layer if present
