“…The most frequently used solvent for the extraction of oilseed protein is water with sodium or potassium hydroxide to modify pH. Sodium chloride has been proposed at different concentrations for the extraction of protein from cottonseeds (Mieth & Kroll, 1984), grapeseed (Abd El-Aal, 1992), tomato seeds (Liadakis, Tzia, Oreopoulou, & Thomopoulos, 1998), Crambe abyssinica (Massoura, Vereijken, Kolster, & Derksen, 1998a, 1998b, canola (Barker, Martens, & Murray, 2002;Barker, Green, & Lei, 2003;Newkirk, Maenz, & Classen, 2003), hazelnut (Moure, Rú a, Sineiro, & Domínguez, 2002b) and Rosa rubiginosa seeds (Moure, Sineiro, & Domínguez, 2001), among others. Sodium sulfite was used during the extraction of proteins from sunflower to prevent oxidation of polyphenols (Roloff et al, 1989;Yazicioglu, Goekcen, & Karaali, 1981) and from tomato seeds (Liadakis et al, 1998); sodium bicarbonate and carbonate for the extraction of protein from soy, sunflower and lupin (Taha, Abbasy, El-Mockrashy, & Shoeb, 1981;Taha, Mohamed, & El-Mockrashy, 1986a, 1986b and sodium phosphate during the extraction of soy proteins .…”