1. Teagasc, The National Food Centre, Dunsinea, Castleknock, Dublin 15, Republic of Ireland (G.D.); Institut National de la Recherche Agronomique, LTAN, Rue de la Geraudiere, 44072 Nantes, Cedex 03, France (P.R., D.B.); and Teagasc, National Dairy Product Research Centre, Fermoy, Co. Cork, Republic of Ireland (P.M.K.)