Food tests and enzyme test

Question 1

How to prepare food test?

Answer 1

food

place food in a beaker with distilled water

stir with glass rod to dissolve food.

get funnel with filtering paper to remove solid food.

Question 2

Explain process of testing for starch?

Answer 2

5cm3 of solution

get bath with 75 degrees Celsius

mix solution with 10 drops of benedict solution.

add to bath for 5 minutes.

Place tube holder pointing away from you.

present starch- green yellow, brick red.

not present stays blue.

Question 3

Explain process of testing for starch?

Answer 3

5cm3 solution add few drops of iodine.

shake.

turns blue black starch is present.

Question 4

Explain how you test for proteins?

Answer 4

2cm3 solution mix with 2cm3 beret solution

shake.

present. pink purple

protein is present.

Question 5

Explain how you test for lipids?

Answer 5

5cm3 solution (not filtered) mix with 3 drops of Sudan 3 stain solution

shake.

present- lipids will separate because its not soluble

bright red layer on top.