Rearch On The Utilization Of Processing By-product From Flammulina Velutipes

Flammulina velutipes was rich in protein, carbohydrates and crude fiber, which wasbeneficial to humans.It was not only tasted slip and brittle, but also a good health food.Flammulina velutipes was often processed into preseved fruit, canned food, yogurt andfermentedwine. The processing by-products of Flammulina velutipes accounted for30-40%of raw materials, most companies directly discarded them without treatment, which bothpolluted the environment and caused great waste of resources. This thesis focused on theextraction of the dietary fiber and polysaccharides, providing a feasible way of usingprocessing byproducts.In this paper the extraction process of the insoluble dietary fiber from the waste ofFlammulina velutipes by alkali with the law of the enzyme was studied.The optimumextraction process of water-insoluble dietary fiber were Alkali concentration5%, extractiontemperature60℃, extraction time60min, protease amount0.4%, under this conditionsextraction rate of insoluble dietary fiber was64.88%.The optimum bleaching process wereH₂O₂concentration6%,pH10.0, bleaching temperature60℃, bleaching time3h, in thiscondition the largest whiteness riched68.53. And the insoluble dietary fiber was in yellow, norough feel, holding water capacity was7.21g/g and swelling property was5.8mL/g.In this paper, the best extraction process of water-soluble polysaccharides from theprocessing by-products of Flammulina velutipes was studied.The results showed that theoptimum extraction conditions were liquid ratio1:40, extraction temperature90℃, extractiontime4h, times of extraction2.The extraction rate of polysaccharides was8.07%under theoptimum extraction conditions.In this study, the enzymatic hydrolysis and decoloration process of the processingby-products of Flammulina velutipes were studied.The optimum enzymolysis technologyconditions were （papain:flavourzyme）4:1, hydrolysis temperature40℃, pH7.0, enzymatichydrolysis time6h,under the optimum conditions, the amino acid content of Flammulinahydrolyzate reached30.08mg/100ml. The optimum decoloration process were activatedcarbon amount2%, decoloration temperature60℃, pH3.0, decoloration time2h, and thedecoloration rate was26.34%.