FOOD SCIENCE ›› 2018, Vol. 39 ›› Issue (5): 106-112.doi: 10.7506/spkx1002-6630-201805017

• Basic Research • Previous Articles     Next Articles

Physicochemical and Adsorption Properties of Ultramicro Insoluble Dietary Fiber from Soybean Hull

GUO Zengwang1, MA Ping1, DIAO Jingjing1,2, LI Chaoyang1, QUAN Zhigang1, MAN Yonggang1, ZHANG Liping1,2,*   

  1. 1. College of Food Science, Heilongjiang Bayi Agricultural University, Daqing 163319, China; 2. National Coarse Cereals Engineering Research Center, Heilongjiang Bayi Agricultural University, Daqing 163319, China
  • Online:2018-03-15 Published:2018-03-14

Abstract: The effect of ultrafine comminution on physicochemical and adsorption properties of insoluble dietary fiber (IDF) from soybean hull was studied. The physicochemical properties included particle size, specific surface area, water-holding capacity, oil-holding capacity, viscosity curve, and cation-exchanging capacity. The in vitro adsorption capacity for fats, cholesterol, bile salts, glucose and heavy metals of IDF samples were determined. The results showed that the water-holding capacity and oil-holding capacity of IDF powder with a particle size of 16.24 μm were 2.31 and 5.27 g/g, respectively, which were 1.07 and 2.53 g/g higher than those of the sample with a particle size of 61.21 μm, respectively. The viscosity value and cation exchange capacity also showed significant changes. The adsorption capacity for fat, cholesterol, bile salt, glucose and heavy metals of ultrafine IDF were significantly increased especially for samples with a particle size of 28.27 and 40.17 μm. Conclusively, ultrafine comminution could significantly improve physicochemical and adsorption properties of insoluble dietary fiber from soybean hull, which would provide a theoretical reference for intensive processing of soybean hull.

Key words: soybean hull, dietary fiber, ultrafine comminution, physicochemical properties, adsorption

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