“…Rapeseed and related cruciferous oilseed crops are a rich source of protein (Finlayson, 1976) glucosinolates (Ballester et al, 1970; Bhatty and Sosulski, 1972; Kozlowska et al, 1972;Mukherjee et al, 1979) and preparation of protein concentrates (Eapen et al, 1969;Jones, 1979;Ohlson and Anjou, 1979;Thompson et al, 1976Thompson et al, ,1982 and protein isolates (Owen et al, 1971;Kodagoda et al, 1973; Gillberg and Tornell, 1976a; Aman and Gillberg, 1977; El Nockrashy et al, 1977; Blaicher et al, 1983). Rapeseed meals and protein concentrates as well as isolates prepared therefrom contain unusually high levels of phytic acid (Jones, 1979;Blaicher et al, 1983), which can cause deficiency of certain minerals, especially zinc, that must be compensated by suitable supplementation (Jones, 1979).…”