Super Pathway Corn Oat Wheat Amino acid 41 40 39 Carbohydrate 39 33 36 Cofactors, Prosthetic Groups, Electron Carriers 13 11 12 Lipids 36 37 38 Nucleotide 18 16 14 Peptide 4 2 4 Secondary metabolism 10 7 4 Unnamed 125 107 116 Total 286 253 263

Table 1: Classification of grain metabolites- Number of biochemicals. Secondary metabolism includes flavanoids, phytosterols, phenylpropanoids and terpenoids. Unnamed metabolites represent biochemicals whose identities have not yet been confirmed with a reference standard.