On saponification a portion of the cellulose, in again combining with water, is hydrolysed to soluble products.
When hydrolysed these fungoid celluloses yield, in addition to monoses, glucosamine and acetic acid.
When hydrolysed with caustic alkalis, they yield primary amines (this reaction determines their constitution).
These were the hexose constituents of the hydrolysed complex, the pentoses (or 'furfuroids') surviving intact.
This was also true of the behaviour of the hydrolysed extracts (acid processes) to yeast fermentation.