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Table 1 Hydrolytic activity (mm) of Aspergillus niger isolates, obtained from different date by-products

From: Characterization and optimization of extracellular enzymes production by Aspergillus niger strains isolated from date by-products

A.niger isolates Source Diameters (mm)
Starch Gelatin Cellulose Tween-20
ASP1 Date paste 8.3±0.58c - 4.3±0.58a 4.3±0.58b
ASP2 10.6±0.58d - 10.3±0.58b 5.3±0.58b
ASP3 4.3±0.58b - 4.6±0.58a -
ASP4 - - 4.3±0.58a 4±1.00b
ASP5 Date fruit 8.3±0.58e - 5.3±0.58c -
ASP6 9±0.00e - 5.6±0.58d -
ASP7 4.3±0.58b - 5.6±1.15d -
ASP8 3.3±0.58b - 3±1.00b -
ASP9 - - - 5.3±0.58e
ASP10 - - 5.3±0.58bc -
ASP11 6.3±1.15d - 6.3±0.58d 3.3±0.58b
ASP12 3.3±1.15b - - -
ASP13 - - - -
ASP14 - - 4.3±0.58bc 3.3±0.58b
ASP15 - - - -
ASP16 - - 6.3±0.58d -
ASP17 - - 6.3±0.58d 3±0.58bc
ASP18 5.3±0.58c - - -
ASP19 - - - -
ASP20 3.6±0.58b - 5.3±0.58bc 4±0.00d
ASP21 8±1.00e - - -
ASP22 - - - 2.6±0.58b
ASP23 8.3±0.58e - - -
ASP24 - - - 3.3±0.58b
ASP25 - - - -
ASP26 Date-seed-powder 7.3±0.58c - 6±0.00b 3.3±0.58b
ASP27 2.6±0.58a - 7.3±0.58bc 5.3±0.58c
ASP28 3±0.00a - 8.3±0.58cd -
ASP29 7.6±1.15c - 4±0.00a -
ASP30 5.3±0.58b - 6.3±0.58b -
ASP31 9.3±0.58d - 6±1.00b 5±0.00c
ASP32 7.3±0.58c - 9.3±0.58d 3.3±0.58b
ASP33 Date-flesh-powder 4.6±0.58c - - -
ASP34 4±0.00b - - -
ASP35 - - 3.6±0.58b 3.6±0.58b
ASP36 - - - -
ASP37 Date juice - - - -
ASP38 3±1.00b - - -
ASP39 - - - 4.3±0.58b
ASP40 - - - -
  1. Results are means ± SD (n= 3). Values of the same column, followed by the same letter, are not statistically different (p < 0.05) as measured by Student-Newman-Keuls test
  2. “-” indicates no detected activity