B3 - Organisation And The Digestive System

Question 1

What is the test for sugar?

Answer 1

Grind food small, adding distilled water and add Benedict’s solution. If there is sugar, the solution will turn yellow, green or brick-red

Question 2

What is the test for lipids?

Answer 2

Grind food small, adding distilled water, adding Sudan III, if there are lipids present, a red oil layer will surface

Question 3

What is the test for proteins?

Answer 3

Grind food small, adding distilled water, adding Biuret solution, if protein is present, the solution will turn pink/purple