Peptide is a compound of two or more amino acids connected by peptide bonds. It is an intermediate substance between amino acids and proteins, a functional fragment and a structural fragment of proteins, an active gene part of proteins, and a nutrient and basic substance of life.

Blueberry contains a large number of physiological active substances, known as the "no.1 antioxidant" in fruits and vegetables, can protect cells, avoid the destruction of oxide, it has the function of preventing dysfunction, improving short-term memory, improving balance and coordination of the elderly.