酱油渣水不溶性膳食纤维提取工艺研究

以酱油厂生产酱油废渣为原料,研究采用碱处理法从酱油渣中提取水不溶性膳食纤维最佳工艺条件。结果表明,各因素对提取膳食纤维影响顺序为:碱浓度、提取温度、提取时间、料液比;最佳提取条件组合是碱浓度4%、提取温度60℃、提取时间60min、料液比16ml/g;在此工艺条件下,水不溶性膳食纤维提取率达32.37%,得到水不溶性膳食纤维持水力为5.65g/g,溶胀度为4.08ml/g。

Study on extracting water-insoluble dietary fiber from soy sauce residues

Insoluble dietary fiber was extracted from soy sauce residues by alkali dissolution. Single factor tests were made on the 4 factors influencing extraction rate(concentration of alkaline,reaction temperature and reaction time,ratio of material to solution) and the optimal extraction technology was determined by L9(34) orthogonal experiments. The results showed that the concentration of alkaline 4%,the reaction temperature 60℃,the reaction time 60 min and the ratio of material to solution 1∶16,could lead to the yield as high as 32.37%.