A process for the separation of pea protein, said process comprising the steps of: i. providing an aqueous extract of pea protein or a solution of pea protein, said extract or solution of pea protein comprising at least two types of pea proteins; ii. passing said aqueous extract or solution of pea protein through at least one expanded bed absorption process, wherein said expanded bed absorption process comprises contacting said aqueous extract or solution of pea protein with at least one adsorbent resin which selectively adsorbs at least a first type of pea protein to provide a non-bound protein fraction and a bound protein fraction, said adsorbent resin comprising: at least one ligand, said at least one ligand comprising an aromatic or heteroaromatic ring system and one or more acidic groups, or at least one ligand, said at least one ligand comprising an alkylamine or alkylarylamine, wherein said alkylamine or alkylarylamine moieties in ligands comprise an amine substituted with one or more groups selected from: a. an aryl, benzyl or heteroaryl group; b. an alkyl group having 4-16 carbon atoms which may be straight, branched or cyclic; or combinations thereof; iii. isolating said first type of pea protein from said adsorbent resin, by elution of either the non-bound protein fraction or of the bound protein fraction; and iv. isolating the second type of pea protein from said adsorbent resin to provide a second pea protein composition which is depleted in said first type of pea protein. i. providing an aqueous extract of pea protein or a solution of pea protein, said extract or solution of pea protein comprising at least two types of pea proteins; ii. passing said aqueous extract or solution of pea protein through at least one expanded bed absorption process, wherein said expanded bed absorption process comprises contacting said aqueous extract or solution of pea protein with at least one adsorbent resin which selectively adsorbs at least a first type of pea protein to provide a non-bound protein fraction and a bound protein fraction, said adsorbent resin comprising: at least one ligand, said at least one ligand comprising an aromatic or heteroaromatic ring system and one or more acidic groups, or at least one ligand, said at least one ligand comprising an alkylamine or alkylarylamine, wherein said alkylamine or alkylarylamine moieties in ligands comprise an amine substituted with one or more groups selected from: a. an aryl, benzyl or heteroaryl group; b. an alkyl group having 4-16 carbon atoms which may be straight, branched or cyclic; or combinations thereof; at least one ligand, said at least one ligand comprising an aromatic or heteroaromatic ring system and one or more acidic groups, or at least one ligand, said at least one ligand comprising an alkylamine or alkylarylamine, wherein said alkylamine or alkylarylamine moieties in ligands comprise an amine substituted with one or more groups selected from: a. an aryl, benzyl or heteroaryl group; b. an alkyl group having 4-16 carbon atoms which may be straight, branched or cyclic; a. an aryl, benzyl or heteroaryl group; b. an alkyl group having 4-16 carbon atoms which may be straight, branched or cyclic; or combinations thereof; iii. isolating said first type of pea protein from said adsorbent resin, by elution of either the non-bound protein fraction or of the bound protein fraction; and iv. isolating the second type of pea protein from said adsorbent resin to provide a second pea protein composition which is depleted in said first type of pea protein.