HOTS : A foul smell may be observed after keeping the bread for a prolonged time. Why? *
Answers
Answer:
ANSWER
Bread is an excellent source of proteins, vitamins, minerals, fibre and complex carbohydrates.
The digestion of the food starts as soon as we put food in our mouth. Our teeth cut the food into small pieces and the salivary glands secrete saliva that mixes with these food materials. The saliva contains an enzyme called salivary amylase which hydrolyses starch into maltose.
It breaks down starch in bread into simpler sugars (maltose) which give a sweet taste, since you are chewing for a longer while, more time and more mixing, for enzymatic action and hence you perceive it as sweet.
A fresh egg gets spoiled and turns into a rotten egg, or fresh food on keeping for a long time gets spoiled. Thus a chemical change may have undergone, which many result in a change in odour [foul smell maybe Evolved]. A piece of fresh bread is kept in the open for a few days.
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