Abstract: The effects of temperature and pressure on the permeate flux of yellow rice wine were studied by tubular UF unit, thechanges of its quality indexes were investigated. The average permeate flux of yellow rice wine is up to 75 kg/m2•h at 0.30MPa and 40℃ with organic membranes of 50000 dalton pore size. The removing rate of total conolies is over 98%, insolublesolids is all removed, retention of crude protein is 21.55%. Ethanol content is almost constant, retention of free amino acids isdifferent, but Retention of total amino acids is up to 86.76%. Old membranes can be cleaned by soaking for a longer time.

Key words: yellow rice wine, sediment, ultrafiltration