Sugar Test
Color
Starch Test
+ or ­
Color
+ or ­
#1
Sugar Solution
#2
Marshmallow
#3
Potato Buds
#4
Powdered
Egg Whites
#5
Starch
#6
Distilled Water
(DW)
1
Which of the food substances tested positive for sugar?
Which of the food substances tested positive for starch?
What factors can make chemical tests for carbohydrates difficult to interpret?
The food substance itself may have color that interferes with the results and a substance may have small amouts of sugar or starch that make the shades hard to determine. Oh ­ and sometimes students make lab errors and contaminate experiment.
2
Starch
Sugar
3
3 Basic Food Types
Nutrient
In which foods can this How are they beneficial
nutrient be found?
to the human body?
Carbohydrates
Proteins
Fats
Vitamins
Minerals
Water
4