Microbial decolorization/degradation of dye generally depends on the availability and type of a co-substrate used, because
they acts as an electron donor for the azo dye reduction as well as azo dyes are deficient in carbon source (8,27).
The performance of Lysinibacillus sp. RGS in decolorizing Remazol Red in the presence of an additional carbon and nitrogen sources (1%) and 5 ml extract of agricultural by-products (1%) were examined to obtain efficient and faster decolorization.
Although there was similargrowth of this strain in all tested sources, large difference was observed in the decolorization pattern.
In control set synthetic media with each carbon and nitrogen supplements, there is no abiotic loss of Remazol Red within 24 h of incubation was observed.
There was reduced decolorization in the presence of carbon source in contrast, amplified decolorization was obtained
in the medium supplemented with nitrogen source like peptone and beef extract.
Addition of carbon sources seemed to be less effective to promote the decolorization, probably due to the preference of the cells in assimilating the added carbon sources over using the dye compound as a carbon source. Percent decolorization was maximum with peptone (100%),