Growth
Period
(Hours)

 

A. niger

 

A. parasiticus

 

Cr(VI)

 

CrT

 

Cr(III)

 

Cr(VI)

 

CrT

 

Cr(III)

 

0

 

50.0 ± 0.12

 

50 ± 0.02

 

0.0

 

50 ± 0.10

 

50 ± 0.05

 

0.0

 

24

 

a43.4 ± 1.03

 

49.2 ± 0.05

 

a5.7 ± 0.11

 

a46.7 ± 0.08

 

48.8 ± 0.19

 

a2.3 ± 0.05

 

48

 

b32.1 ± 0.22

 

48.9 ± 0.15

 

b16.5 ± 0.07

 

b39.4 ± 0.09

 

49.2 ± 0.31

 

b9.5 ± 0.75

 

72

 

c17.2 ± 0.85

 

49.0 ± 1.00

 

c31.6 ± 0.45

 

c23.0 ± 0.61

 

48.6 ± 0.72

 

c25.3 ± 1.01

 

96

 

d0.3 ± 0.01

 

49.3 ± 0.97

 

d48.7 ± 0.52

 

d5.9 ± 0.06

 

49.0 ± 0.84

 

d43.6 ± 0.88
Values are presented as Mean ± S.D of triplicate determinations
Mean values with different superscripts along a column are statistically different (P < 0.05)
Table 3: Concentrations (mg/l) of hexavalent chromium [Cr(VI)], total chromium (CrT) and trivalent chromium [Cr(III)] in fungal cultures during the 96 hours growth period.