G. Makishi, R. Lacerda, H. Chambi, P. Costa, A. Bittante, C. Gomide, P. Sobral, Effect of Alkaline Agent and pH on the Composition of Freeze-Dried Proteins Extracted from Castor Bean (Ricinus communis L.) Cake, Chemical Engineering Transactions. 37 (2014) 697-702. doi:10.3303/CET1437117.