Below are some of the facts about proteins:

• Carbon, oxygen, hydrogen, nitrogen and sometimes sulphur are some of the elements that proteins contain.
• The Biuret test is the most commonly applied test to know if proteins are present or not in food.
• Amino acids are the basic monomers of proteins.
• The amino acids are linked by peptide bonds which are formed by condensation reactions.
• The peptide bonds in proteins are broken down by hydrolysis. This process can be performed by with dilute acid or a protease enzyme.
• Proteins structure is described at three levels.

Here are a few most commonly asked questions:

What is Protein?
Proteins are one of the most essential component of a human diet. These are used to
make up human body cells and tissues. Proteins also form a major part of the enzymes, hormones and substances that are used to  fight against infection.
Proteins are also burned as a source of getting calories out of it.

What happens when Protein intake is too high?
When protein is taken in large quantity, it is either used as calories or stored as fat in the body.

What happens when Protein intake is too low?
If protein is taken in less quantity, the body mass will be broken down in order to meet the requirements of protein needs. In fact, an inadequate protein intake during pregnancy may result in inappropriate baby weight.

Which foods are high in Protein?
The protein content is high in animal origin food like, such as  meat, fish, poultry, eggs. Milk-based foods also contain a lot of proteins. Again beans and legumes have a quite a huge amount of protein. Some more sources of protein are dried beans (black beans, black-eyed peas, chickpeas, etc.), soybeans and soybean products (tofu, tempeh and TVP) and lentils, split peas, starches and vegetables.