Is protein acidic or alkaline?

Protein is an amphoteric food because not all proteins are acidic, there are also alkaline proteins, and what is more important depends on the type of food. But we all know that protein is an indispensable nutrient for the human body and the material basis of life.

1. Proteins are amphoteric. Protein is a high molecular compound composed of α-amino acids through peptide bonds. There are amino groups and carboxyl groups in protein molecules. Therefore, similar to amino acids, protein is also an amphoteric substance. For example, protamine and histone. Not all proteins are acidic, there are also alkaline proteins. The acidity or alkalinity of a protein depends on the amount of acidic and alkaline amino acids in the amino acids that make up the protein. Proteins containing more acidic amino acids are acidic, and proteins containing more alkaline amino acids are alkaline.

2. As for protein foods, they are acidic foods because protein can produce organic acids during metabolism, but it itself contains relatively few alkaline metal ions, not NO3-. NO3- is a very dangerous acid radical in the animal body and will not be produced during normal metabolism.

3. Protein is the material basis of life, an organic macromolecule, the basic organic matter that constitutes cells, and the main carrier of life activities. There is no life without protein. Amino acids are the basic building blocks of proteins. It is a substance that is closely related to life and various forms of life activities. Proteins are involved in every cell and all important components of the body. They are composed of more than 20 kinds of amino acids in different proportions and are constantly metabolized and renewed in the body.