Abstract: Abstract In this paper, PVPP was used to treat separately original beer, BSA solution and BSA mixed with original beersolution. It was found that under the same condition, though PVPP was strongly absorbed to BSA; but it was more stronglyabsorbed to polyphenols in beer. However,in BSA mixed with original beer solution, the amount of polyphenol absorbed, wasmuch higher than that of BSA was absorbed. The results showed that polyphonol was predominant in the competitiveabsorption.

Key words: Polyvinylpolypyrrolidone(PVPP), N-Vinylpyrrolidone(NVP), Beer Clarifier , Polypyrrolidone(PVP)