Question

What will happen to ‘pooris’ and ‘unused kneaded flour’ if they are left in the open for a day or two?

Answer 1

Hint: You all have heard about the process called fermentation. It is a metabolic process in which the microorganism makes desirable changes in food and beverages through its activity. It occurs in anaerobic conditions.

Complete answer:
As you all know about the process called fermentation. It is a metabolic process in which due to the activity of microorganism, it makes changes in food and beverages. It occurs in the absence of oxygen i.e. anaerobic condition.
In other words, we can say that fermentation is the process of food processing in which sugar is converted into alcohol by the action of microorganisms.
In this question, we are asked about the condition of ‘pooris’ and ‘unused kneaded flour’ if left in the open for a day or two. The unused kneaded flour, if left in warm conditions, gets infected by the microbes which undergo through a process called fermentation. Due to this fermentation process, it spoils the flavor, texture of the flour. It would lead to the spoilage of kneaded flour, whereas in case of pooris, it remains in good condition with respect to unused kneaded flour because they are fried deeply in a heat that kills the microorganism. It does not undergo the fermentation process.

Note:
Remember that fermentation is an anaerobic process. It converts carbohydrates to alcohol or organic acids using microorganisms, for example - yeast or bacteria. Here, energy can be released from glucose even if in the absence of oxygen. Alcoholic beverages like wine, beer etc. are produced from the fermentation process. The science related to fermentation is known as zymology or zymurgy.