Table 1.

Statistical analysis of the 25-inoculum growth test. Three replicates of 25 inoculum grids were considered (25 × 3 inoculum points for each treatment/paper/fungus). Average value ± standard deviation. Different letters indicate significant differences (Fisher, p < 0.05) between the means of independent replicates. Paper grades: A (Whatman) and D (Mezzofino). Treatments: nt T1, control after 1 month from fungal inoculums; nt T2 control after 1 year of natural drying; O ethylene oxide treatment; γ, gamma rays treatment; L, freeze-drying treatment. Fungi: Ch = Chaetomium globosum; Cl = Cladosporium cladosporioides; Tr = Trichoderma viride; Mix = the three strains together.

Treatment	Average paper A ± St. Dev.	Average paper D ± St.Dev.
nt T1_Ch	25.0 ± 0.0 A	23.3 ± 1.5 A
nt T1_Cl	25.0 ± 0.0 A	25.0 ± 0.0 A
nt T1_Mix	24.0 ± 1.7 A	24.3 ± 1.2 A
nt T1_Tr	19.0 ± 1.0 B	17.3 ± 0.6 B
nt T2_Ch	25.0 ± 0.0 A	7.7 ± 4.9 D
nt T2_Cl	0.0 ± 0.0 E	0.0 ± 0.0 E
nt T2_Mix	24.0 ± 1.7 A	2.7 ± 0.6 E
nt T2_Tr	0.0 ± 0.0 E	0.0 ± 0.0 E
O_Ch	0.0 ± 0.0 E	0.0 ± 0.0 E
O_Cl	0.0 ± 0.0 E	0.0 ± 0.0 E
O_Mix	0.0 ± 0.0 E	0.0 ± 0.0 E
O_Tr	0.0 ± 0.0 E	0.0 ± 0.0 E
γ_Ch	0.0 ± 0.0 E	0.0 ± 0.0 E
γ_Cl	0.0 ± 0.0 E	0.0 ± 0.0 E
γ_Mix	0.0 ± 0.0 E	0.0 ± 0.0 E
γ_Tr	0.0 ± 0.0 E	0.0 ± 0.0 E
L_Ch	25.0 ± 0.0 A	12.3 ± 1.5 C
L_Cl	0.0 ± 0.0 E	0.0 ± 0.0 E
L_Mix	16.7 ± 3.8 B	0.3 ± 0.6 E
L_Tr	0.0 ± 0.0 E	2.3 ± 1.5 E