Abstract: Chitosan k has been separated by cation ion-exchange chromatography on CM-Sepharose CL 6B.Chitosan a, chitosanb, chitosan c were concentrated during binding and collected in a concentrated form. The compositions changing,tinctand percenttransmittency of kiwifruit juice before and after chitosan k,a,b,c clarification treatments were invectigated.Chitosan k,a,b,c couldclarify kiwifruit juice,percent transmittancy were all above 94.6%.The content of soluble solids and VC of juice before and afterchitosan k, chitosan a, chitosan b,and chitosan c treatments was equal, and chitosan k, chitosan a, chitosan b,chitosan c couldaffect the content of protein,reducingsugar,total sugar and polyphenol of kiwifruit juice differently.

Key words: chitosan, ion-exchange chromatography, kinifruit juice