Table 4. Effects of various nitrogen sources on the enzyme production.

Inorganic nitrogen

Pectinase activity
(u/g)

Proteinase activity
(u/g)

Cellulase activity
(u/g)

Control

16288 ± 594^a

3001 ± 79^a

1025 ± 31^a

NH₄NO₃

17528 ± 532^bc

3238 ± 86^bc

1045 ± 35^ab

(NH₄)₂SO₄

18048 ± 511^c

3354 ± 115^c

1103 ± 30^c

NaNO₃

17008 ± 445^ab

3123 ± 107^ab

1039 ± 22^a

NH₄Cl

17344 ± 308^bc

3077 ± 98^ab

1098 ± 36^bc

Each value represents the mean ± standard error; with no common superscript letter in a column for a group of substrates are significantly different at p < 0.05.