1.6 Amino acids
Amino acids are the building blocks for the synthesis of proteins which includes antioxidant enzymes. Some of the amino acids can directly scavenge oxygen free radicals. Out of 20 essential amino acids present in mulberry leaves, four amino acids, Asparagine, Alanine, Proline and GABA were observed and their structures are shown in figure 4. Mulberry leaves contains high amino acid contents which are nutritively superior and also promote growth and development of silkworm [21,22].