Abstract:

The effect of superfine grinding on dissolution rate of polysaccharides, content of dietary fibers and physical properties of Lentinus edodes stems was investigated. Results indicated that Lentinus edodes stems exhibited a doubled increase in dissolution rate of polysaccharides, an increase from 43.23% to 48.91% in total dietary fiber, an increase from 5.66% to 15.64% in soluble dietary fiber, and an enhancement of 37%, 46% and 109% in water-holding capacity, oil-holding capacity and swelling capacity, respectively, when ground to the powder of 8.05 μm in particle size. Therefore, superfine grinding technology will be a feasible approach to the in-depth exploitation of Lentinus edodes stems due to its promotion on utilization rate of polysaccharides and significant improvement on functional properties of dietary fibers.

Key words: superfine grinding, Lentinus edodes stem, polysaccharide, dietary fiber