枣渣中可溶性膳食纤维的提取

试验以枣渣为原料,分别采用稀盐酸酸解、高压蒸煮和超声分散进行预处理,再用纤维素酶进行酶解提取膳食纤维,根据可溶性膳食纤维(SDF)和不溶性膳食纤维(IDF)得率来选择最佳可溶性膳食纤维提取方法。结果表明:枣渣经121℃,0.1 MPa高压蒸煮30 min后,再加0.5%的纤维素酶水解,SDF的得率达11.3%。和其它方法相比,该工艺过程的水解得率最高。

Extraction of Soluble Dietary Fiber from Jujube Fruit Residues

The jujube residue was pretreated respectively with acid hydrolysis,high pressure treatment and ultrasonic dispersion,then extracted dietary fiber with cellulase.At last the study selected the optical extracted method according to the yields of soluble and insoluble dietary fiber.The results showed the jujube residue was pretreated 30 min with high pressure under the conditions of 121 ℃,0.1 MPa,and then was hydrolyzed by 0.5% of cellulose.Finally the yield of insoluble dietary fiber may get 11.3%.Compared with other methods the technology might acquire the highest yield.