Abstract:This paper studied the technological processing and conditions of extraction of long jujube pigment from long jujube with methods of enzymolysis-alcohol extraction, By single-factor experiment and orthogonal experiment the optimal technological parameters is found as follows: material-water ratio 1:20, comminution degree 60 meshs, enzyme dosage 1%, enzymolysis temperature 50 ℃, enzymolysis time 40 min, enzymolysis pH 6, ethanol extraction volume ratio 1:3. under these conditions the extraction rate of long jujube pigment is 9.85%. In the meantime, the stability of long jujube pigment is studied. The result shows that except in strong oxidizer H2O2 and alkali, it has good stability under other conditions.
