Gel filtration to the extracted phycobiliprotein solution from Polysiphonia urceolata rich in phycoerythrin was performed by four gels of Sephadex G-150( G-150),Sephadex G-200( G-200),Sephacryl S-200( S-200)and Sephacryl S-300( S-300),and the obtained fraction of phycocyanin and allophycocyanin was further purified by the gel filtration on G-150,S-300 and S-200.An optimized technical procedure of isolating phycocyanin and allophycocyanin from the extracted phycobiliproteins of Polysiphonia urceolata by the ...