Plant-based protein powders are derived from various types of plants — commonly brown rice pea soy and hemp. It also contains leucine isoleucine and valine which are branched-chain amino acids (BCA As) important for muscle building ( 4 5 ). Conveniently some manufacturers combine multiple plant proteins in their products to ensure they contain all essential amino acids and BCA As. Source: https://www.artikelschreiber.com/.