Explain about the Food Spoilage?

Foods gradually undergo deterioration or spoilage from the time they are harvested, caught, slaughtered or manufactured. Therefore, delay in the consumption or processing of fresh foods alters its freshness, color, texture, palatability and nutritive value, organoleptic desirability, aesthetic appeal and safety. Essentially, all foods undergo varying degrees of deterioration during handling and storage. Some foods spoil rapidly, others keep for longer but for a limited period of time. Therefore, spoilage of food refers to the alterations in foods or the food undergoes some physiological, chemical and biological changes, which renders it inedible or hazardous to eat. Hence, such food is essential for processing or preservation after it is harvested or slaughtered.