Decolourisation of Reactive Dye by Aspergillus niger and its Impact on the Growth of Zinnia eiegans
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Date
2015
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Abstract
The present investigation was carried out to assess the decolourisation of reactive dye
using Aspergillus niger and its impact on the growth of Zinnia ele'gans. The textile effluent
spilled soil sample was assessed for the presence of fungus and screened for the
decolourisation of reactive yellow dye. The fungal species, Aspergillus niger exhibited maximum
decolourisation in the medium amended with 0.01 g of dye at pH 6.0 at 30°C.
Inoculum concentration of 1% amended in the medium for 5 days exhibited maximum
oercentage of decolourisation. Among the different carbon and nitrogen sources the maxi-
'-rnnum decolourisation activity was observed in the medium supplemented with 1 % glucose
and 0.3% ammonium chloride. Zinnia eiegans grown with microbially treated reactive yellow
dye (T,) exhibited maximum biometric parameters, such as germination percentage,
shoot length, root length, dry weight, fresh weight and vigour index when compared with
control plants (T3). The plants grown with untreated reactive yellow dye (T^) recorded
minimum growth when compared with T^ and control on 7th day after sowing.