Abstract: Among of three different juice processing technics, the juice yield, the effect of defecating and the soluble solids concentration (SSC) of the syrup by enzyme-liquefaction are all higher; The juice yield and SSC of the syrup by direct pressing are higher but the syrup is thick; The juice yield and the SSC of the syrup by leaching is lower and the is thin, get more pigments are obtained. The enzyme-liquefaction orthogonal test showed that the juice yield of blackberry is beyond 80%, the effect of defecating is good, and the transparence is about 90% with 0.04%～0.06% pectinase under the temperature 45～55 ℃ for 2 h.

Key words:  , blackberry； pectinase； juice yield； transparence； absorbency；