Abstract:
Fresh Cryptotaenia japonica Hassk was used as raw material, according to the sensory evaluation of color and texture, the effect of blanching conditions, different kinds of color fixative and color- protecting conditions on the effectiveness of color- protection and texture of Cryptotaenia japonica Hassk which had treated by alkali blanching and color fixative was observed in the research. The results showed that alkali blanching and color fixative had a better color protection. The solution of 0.06% of Zn ( COOH) 2 and 0.3% of PA played a significant effect on color protection during different kinds and concentration color fixative.Under the condition of 90℃ and 1. 0% Na 2 CO 3 blanching for 1min, the effect of blanching was the best, when the material was soaked with the color- protecting solution of 0.3% PA + 0.07% Zn ( COOH) 2 under the condition of pH5.0 for 20min, the effect of color- protecting was the best. Under these conditions, the best techniques of protecting color and texture could be obtained.