The Research of Solid Fermentation for Preparing Wheat Bran Soluble Dietary Fiber with Fungi

[Objective] To investigate effects of several fungi on yield of soluble wheat bran dietary fiber and antioxidant activity at different fermentation time.[Method]The preparation of soluble dietary fiber from wheat bran by fungal solid state fermentation were investigated with wheat bran as raw material. The yield and antioxidant activity of soluble wheat bran dietary fiber were evaluated in different fermentation time( 1,3,5,7,9 d) with three different fungi( Aspergillus niger,Aspergillus,Trichoderma reesei). [Result]The results showed the yield and antioxidant activity of soluble wheat bran dietary fiber were significantly increased by solid state fermentation 7d with Trichoderma reesei. The result indicated that Trichoderma reesei was excellent strains for preparation of soluble wheat bran dietary fiber. The high yield and antioxidant activity can be obtained by solid state fermentation 7d with Trichoderma reesei. [Conclusion]The study can provide reference for application of several fungi strains in preparation of dietary fiber.