| abstract |
The invention relates to a method for extracting glucan, ergosterol and chitosan from waste yeast strains. The waste yeast provided by the invention is prepared by crushing and sieving waste yeast strains, breaking the walls by using nitric acid, and obtaining chitosan and intermediate products glucan and ergosterol after alkali treatment, alcohol precipitation, extraction deacetylation, acid dissolution and alkali precipitation drying. The invention realizes the comprehensive reuse of waste yeast strains, solves the problem of treatment of industrial waste, has strong operability, and has high efficiency, energy saving, time saving, simple operation and high added value production compared with the traditional extraction method. |