Table 2.

Influence of substrate concentration on biomass and activity of glucose isomerase (GI) produced by Aspergillus sp.

Glucose content, g/l	Biomass, mg	Glucose left, mg/ml	Fructose, mg/ml	Proteins, mg/ml	GI units, mg/ml	GI activity, U/mg
1	752 ± 1.12	640 ± 1.01	162 ± 1.11	1530 ± 1.04	1126 ± 1.02	10.5 ± 1.13
5	872 ± 1.01	970 ± 0.93	132 ± 0.70	1500 ± 0.67	732 ± 0.56	8.8 ± 0.61
10	603 ± 0.91	790 ± 0.81	128 ± 0.31	1475 ± 0.60	710 ± 0.41	8.6 ± 0.51
20	197 ± 0.64	1000 ± 0.61	132 ± 0.32	1440 ± 0.56	732 ± 0.37	9.1 ± 0.42
30	1315 ± 0.44	1000 ± 0.44	137 ± 0.27	1410 ± 0.47	760 ± 0.25	9.7 ± 0.32
40	1640 ± 0.31	1032 ± 0.32	135 ± 0.11	1370 ± 0.21	749 ± 0.19	9.8 ± 0.24
50	1082 ± 0.22	1032 ± 0.25	135 ± 0.12	1220 ± 0.10	749 ± 0.11	1.1 ± 0.11
60	1075 ± 0.12	1014 ± 0.16	140 ± 0.11	1123 ± 0.11	777 ± 0.10	1.2 ± 0.10

r² = 0.016, (n = 3)