Question : Which of the following chemicals is used as a preservative to slow browning and discolouration in foods and beverages during preparation, storage, and distribution?
Option 1: Nitrous oxide
Option 2: Phosgene
Option 3: Sulphites
Option 4: Chlorine
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Correct Answer: Sulphites
Solution : The correct answer is Sulphites .
Sulphites is a sulphur-containing compound that has been used for centuries to prevent discolouration and slow browning during the storage and distribution of many foods. When some fruits are cut, the exposure of the flesh to oxygen results in enzymatic browning. Several different products are used to prevent this naturally occurring process, and one of them is sulphites. They are used as an additive to maintain food colour and shelf life.
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