文档介绍：I. Food additives Page 1
Topic I. Food additives
Reference Chemistry – A modern view Book 2 pg. 214–226
Reading
Objectives
– be aware that the appearance and the flavouring of food can affect appetite (食慾)
– recognise that artificial colouring is used to enhance appearance of food
– recognise that salt, sugar, vinegar and monosodium glutamate are some chemicals used to enhance
flavouring of food
– recognise that sulphur dioxide, benzoic acid, salt, sugar, vinegar and nitrites mon food preservatives
– recognise the following actions of food preservatives:
(a) dehydration, . salt, sugar
(b) provision of an unfavourable medium for the growth of anisms, . sulphur dioxide, vinegar
(c) towards anisms, . benzoic acid, nitrite
(d) as an antioxidant, . sulphur dioxide
– recognise that some food additives are hazardous to health
Notes I. Food additives (食品添加劑)
At home, we don’t use that much of food additives. Food made at home is usually fresh and will be eaten very
soon. This makes them delicious and good looking.
Food processing in industrial scale causes change in colour of the food, loss of taste, loss of nutritional value.
Furthermore, the food have to be stored for a long period and is not fresh.
Will you buy such kind of processed food ?
Functions of food additives
In food p