Food and its digestion: Chapter-01, food and its nutrition. About types of Nutritions etc.
in this video we learn about why food preservation is required for the food items is necessary for human being and all living beings.
in this video we will learn about food preservation, any change in the quality of food that makes it unfit for consumption is called spoilage of food. it occurs due to the action of microorganisms like fungi and bacteria which are present in the atmosphere.The group on food and decay its quality by changing its chemical composition.Presence of moisture is one of the major causes of microbes growth on food products.Eating rotten food may result in stomach and other digestive problems so we don’t eat spoilage of food item and can be deducted from change in their test smell and texture also.
food preservation is a set of techniques used to prevent food items from going bad the purpose is to limit to condition in which germs can multiply.It was so prevent changes in the chemical composition of the food following are some of the commonly used method for food preservation are drying, freezing, canning, pickling and chemical treatment.
Nutritions are the substance that make up our food. everybody needs different nutrient in different proportions. Lake of any nutrient in our diet for a long period of time would result in appearance of deficiency symptoms and diseases.our diet should not only consists of all the necessary nutrition but also in proper proportions.
Basically there are three types of major category of nutrients for carbohydrates fats and proteins.
carbohydrates and fats are the energy giving nutrients while proteins are the body building nutrients apart from their vitamins minerals like iron calcium sodium accept are also required by our body in trace quantities.
carbohydrate form the bulk of our died there the energy giving nutrients and are essential for carrying out our life activities.
Junk foods it having a high calorific value and high concentration of fats and sugar but are are lacking in nutrients like vitamin and protein are known as junk food.few examples are like soda cake pastry burger etc.
protein and other category of the major nutrients required by our body they are the building block of our body.
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