Data are presented for amino acid contents of fifteen carbohydrates, lignocellulosic materials, including olive milling waste water. The selected substrate were: glucose, cellobiose, saccharose, microcrystalline cellulose, tannin, phlobaphene, bark, lignocellulose residue, sugar residue from organosolv process, rice hull, irradiated rice hull, orange bagasse, alpechin (5%), alpechin (10%) and irradiated alpechin (10%). Ratios of some amino acids of nutritional significance in conventional protein sources and those induced by different lignocellulosic substrate are presented. Also, a comparison of the ratios of individual amino acids to total essential amino acids (A/E ratio) and total essential amino acids to total amino acids recovered as nitrogen (E/T ratio), together with essential amino acid chemical scores, led us to compare the quality of each carbon source used. These analyses showed that orange bagasse, alpechin (10%) and bark were the most inexpensive materials and produced the highest protein qualities.2513136