Explain the following terms with a suitable example for each : (3 marks)
(iii) Food preservatives
(i) Disinfectants : These are the chemical substances which are used for killing or preventing the
growth of micro-organisms but they are not safe not living tissues.
(ii) Antacids :Those substances which neutralize the excess acid and raise the pH to an appropriate
level in stomach are called antacids.
Example : Sodium bicarbonate,
(iii) Food preservatives : They are used to prevent spoilage of food due to microbial growth.
Example : Table salt, vegetable oils, sodium benzoate etc.