What are Proteins?

What are Proteins?
Protein is composed of Carbon, Hydrogen, Oxygen, and Nitrogen and is often termed Nitrogenous foods. Protein is that element of the food, which is used for the construction and repair of the highly vitalized living tissues of the body; that is the essential vital machinery- the muscles, glands, nerves, and other parts concerned in the various functions of the body, consist of protein. Protein is the primary structural and functional component of every living cell. Almost half the protein in our body is in the form of muscles and rest of it is bone, cartilage amino acids. Certain amino acids have been termed as”essential” since they are not synthesized in the human body and have to be obtained from protein in the diet. Other nonessential amino acids can be synthesized in the human body to build protein. Protein performs a wide range of functions and also provide energy(4Kcal/g). Animal food like milk, meat, fish, eggs and plant foods such as legumes are the rich source of protein. Animal protein is of high quality as it provides all the essential amino acids in right proportions. Plant or vegetable protein is not of the same quality because of their low content of some of the essential amino acids. However, a combination of cereals, millets, and pluses provide most of the amino acids, which complement each other to provide a better quality of protein.

What is the difference between Vegetarian and Non-Vegetarian protein?
There is a difference between vegetarian and non-vegetarian protein. We get vegetarian protein from plant sources and non-vegetarian protein from animal sources. Animal protein is of good quality as it provides all essential amino acids whereas plant protein lacks in one or the other essential amino acids. However, the combination of various cereals and pulses will complement each other to provide a better quality of protein.

How much calorie one gets on consumption of 1 gm of Carbohydrate?
1gm of carbohydrate gives 4 calories.

How much calorie is there in 1 gm of protein?
1gm of protein gives 4 calories.

How much Calorie is there in 1gm of fat?
1gm of fat gives 9 calories.