Fig. 1From: Applicability of enzymatic and phenol–sulfuric acid methods for determination of cellulose nanofibers in ecotoxicity testingElimination of d-glucose from cellulases by ultrafiltration. Concentration and dilution of cellulase solutions (Cellic CTec2, cellulase from Trichoderma sp., or cellulase from A. niger) were repeated five timesBack to article page