纤维素酶法提取枣渣可溶性膳食纤维的工艺研究

可溶性膳食纤维是一种非常重要并为国际一致公认的功能性食品基料。以枣渣为原料，采用纤维素酶法提取可溶性膳食纤维，探讨了加酶量、料液比、酶解温度和酶解时间对可溶性膳食纤维得率的影响。通过正交试验确定制备枣渣可溶性膳食纤维的最佳工艺条件为：纤维素酶加酶量为4%，料液比1∶15，酶解温度50℃，酶解时间1.5 h，此条件下枣渣可溶性膳食纤维得率达6.20%。研究结果将为枣渣的综合利用提供参考数据，并能丰富膳食纤维的材料来源。

Preparation of Soluble Dietary Fiber of Jujube Fruit Residues with Cellulase

The soluble dietary fiber is a very important functional food base material recognized as an international consensus. In order to discuss the effect of adding enzyme amount, solid\|liquid ratio, enzymolysis temperature and time, this study took jujube fruit residues as material and extracted soluble dietary fiber by cellulase. The single factor and orthogonal array design experiments were carried out. The results indicated that the optimal procedure for producing soluble dietary fiber was cellulase dose of 4%, 1∶15 solid\|liquid ratio, enzymolgysis at 50℃, for 1.5 hour. Under this conditions, the yield of dietary fiber could reach 6.20%. This study would provide reference data for comprehensive utilization of jujube fruit residues, and enrich the material source of edable fiber.