Biorefining spent substrates of shiitake (Lentinula edodes) and oyster mushroom (Pleurotus ostreatus): enzymatic saccharification of cellulose and xylan, with lignin recovery from residues

香菇（Lentinula edodes）和平菇（Pleurotus ostreatus）废弃底物的生物精炼：纤维素和木聚糖的酶促糖化，以及从残渣中回收木质素