Proteins that contain ample amounts of all essential amino acids.
A dietary protein which contains all of the essential amino acids in amounts needed by the consumer.
A complete protein provides all of the essential amino acids at levels adequate to meet the demands for normal growth and development. Historically, all animal proteins, except gelatin, have been classified as complete proteins and all plant proteins, except soy protein, have been classified as incomplete proteins. The notion that plant proteins and gelatin are incomplete has been challenged, however, with opponents arguing that adequate consumption of many single plant foods could provide a profile of essential amino acids necessary to meet nutritional needs. Others argue that the classifications of complete vs. incomplete proteins are accurate, since in practical terms it would often be physically impossible to eat enough of some foods in order for humans to obtain enough of all of the essential amino acids. Furthermore, digestibility of the protein in foods should be considered when determining if a protein is likely to be complete. Most experts recommend that athletes consume a varied diet to ensure consumption of all essential nutrients, including essential amino acids, and foods providing high-quality proteins.
A protein containing all the essential amino acids.