Abstract: The study worked a new method that experiment adopted Aspergillus niger as experimnetal stecies, which secrete β-glucosidase, to produce the soybean isoflavone glycoside by solid fermentation. Study, through a single-element and cross- experiment, selected and decided the optimum medium ratio to produce β-glucosidase and technological conditions for hydro- lyzing soybean isoflavone flour, which provide a reliable references to realize the industrialization of soybean isoflavone glycoside.

Key words: Aspergillus niger； solid fermentation； &beta, -glucosidase； produce； soybean isoflavone glycoside；