Abstract: In order to improve its stability, Xinjiang snow lotus healthcare wine was subjected to stabilization treatment followed by PSF hollow fiber membrane filtration. The optimal stabilization treatment was cold treatment. The optimal membrane filtration conditions were 0.20 MPa of operating pressure, and 30－50 kD of MWCO. Under these conditions, the retention rate of total flavonoids was 80.31%, and the membrane flux was 7.52 L/(m2·h). The saturation temperature of Xinjiang snow lotus healthcare wine subjected to these treatments was 12.3 ℃, the turbidity was kept at 3 NTU during 7 d of alternative cold and heat treatments. Moreover, other physiochemical indexes complied with the requirements.

Key words: snow lotus healthcare wine, membrane treatment, stability, cold treatment