fats

Question 1

test for fats and oils

Answer 1

• the sample is mixed with absolute ethanol which dissolves any lipids present.
• shaken with equal volume of water
• dissolved lipids come out of the solution, as they are insoluble in water.
• they form an emulsion, making the sample cloudy white

Question 2

Implications of saturated fats for humans

Answer 2

• Heart disease
  - fatty acids deposits on the inner wall of
  the coronary arteries
  - restricts blood flow, and oxygen to the
  heart
• High blood pressure
• A diet that is high in saturated fats, smoking, lack of exercise are all factors, and can be modified to reduce the risk of disease.