5.3 Food Additives

Anita wants to bake an orange cake but she has no oranges. Which food additive can be used to produce orange flavour?

• Ethyl butanoate

• Methyl butanoate

• Octyl ethanoate

• Oentyl ethanoate

What is the function of preservatives?

• enhance the appearance of the foods

• improve the texture of the foods

• enhance the taste of the foods

• prevent the spoilage of foods

Fruit juices are healthy drinks. Apple juices sold commercially contain food additives such as vitamin C. What is the role of vitamin C?

• Intensify the sour taste

• prevent oxidation

• slow the growth of bacteria

• enhance the appearance

Vinegar is a natural food additive. Vinegar is used in the production of pickled mangoes. Which is the following is correct about the action of ethanoic acid in vinegar?

• gives sour taste

• destroys microorganism

• removes water from foods

• ionises in water to produce an acidic environment

Why are ester compounds used as a flavouring in foods?

• Esters are not soluble in water

• Esters have a fruity smell

• Esters are chemically unreactive

• Esters are easy to prepare

Chemical substances that give colours to sweets can be separated and identified by

• chromatography

• filtration

• crystallisation

• fractional distillation

Which of the following food additives act as preservatives and flavouring?

• vinegar

• starch

• Vitamin C

• Vitamin E

Which food additive stabilises the emulsion in foods such as ice cream?

• Gelatine

• Lecithin

• Pectin

• Sodium nitrite

What is the function of adding pectin in jam?

• to stabilise the emulsion

• to increase the sweetness

• to thicken the jam

• to prevent the growth of bacteria

Sugar is the food flavouring. What is the side effect of consuming foods with too much sugar?

• gain weight

• diabetes

• high blood pressure

• heart attack