Silica columns for HPLC (Table 1, entries 9–12) allow the splitting of c-oryzanol components into two closely eluting peaks but their composition wasn’t proven (Diack & Saska, 1994). While this manuscript was being revised, an improved method, using a NP-HPLC and a cyanopropyl column, was published but c-oryzanol was eluted as one peak (Huang & Ng, 2011).