Question

How do microorganisms spoil food ?

Answer 1

hi
Under the correct conditions, spoilage bacteria reproduce rapidly and the populations can grow very large. In some cases, they can double their numbers in as little as 30 minutes. The large number of microorganisms and their waste products cause the objectionable changes in odor, taste, and texture.
Microbial Growth. Microorganisms, specifically bacteria, molds, and yeasts, can cause food to spoil. For example, microorganisms that break down fats in unsalted butter can cause it to become rancid. Bacteria that breaks down protein in meat (proteolytic bacteria) and results in foul odors.
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Answer 2

Microorganism spoil food if not kept in proper hygienic conditions. Microorganisms  such as bacteria, molds, and yeast can lead to spoilage of food. Proper temperature should be maintained to protect the food from spoilage. Detection of spoilage of food can be detected from change in color and odour. There could be multiple reasons in which the microorganisms can affect the food such as rancidity in which the bacteria convert fat into unsalted butter .Most of the food having carbohydrates in then is fermented and as a result of this acidic fermentation products are formed.