The Chemical Composition of the Cell Walls of Penicillium digitatum Sacc. and Penicillium italicum Whem.

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Abstract
Purified cell walls were isolated jom hyphae of P. digitatum and P. italicum. Electron micrographs showed micro-fibrils in the walls. The walls are composed chiefly of carbohydrate material, mainly D-glucose, together with D-galactose, glucosamine and mannose. Only small amounts of protein were found. Fractiona-tion with alkali and acid indicated that the walls contain several glycans.