Sustainable bioremediation approach to treat the sago industry effluents and evaluate the possibility of yielded biomass as a single cell protein (SCP) using cyanide tolerant Streptomyces tritici D5

This sustainable approach was performed to evaluate the bioremediation potential of cyanide resistant bacterial species on sago industry effluents and assess the possibility of using the yielded biomass as single cell protein (SCP). The predominant cyanide tolerant bacterium enumerated from muddy soil was identified as Streptomyces tritici D5 through 16S rRNA sequencing. The identified S. tritici D5 strains showed excellent resistant and degradation potential at 100 mM concentration of potassium cyanide. Furthermore, the physicochemical properties analysis of sago industry effluents results revealed that the most of the parameters were crossing the permissible limits of Pollution control board of India. The bioremediation process was performed at various temperatures at 25 degrees C, 35 degrees C, and 45 degrees C for a period of 30 days of continuous bioremediation process with the aid of an aerator. Surprisingly, the best organic pollutant reduction was found at 35 degrees C and 45 degrees C, with 25 degrees C following close behind. Remarkably, the dissolved oxygen (DO) level was gradually increased from 2.24 to 12.04 mg L-1 at 35 degrees C in 30 days of the remediation process. The pH and ammonia were also significantly increased during the bioremediation process in 30 days of treatment. Similarly, at 35 degrees C of bioremediation process the S. tritici D5 yielded maximum dried biomass (6.9 g L-1) with the total crude protein (SCP) as 4.8 g L-1 (69.56%) in 30 days of growth. These findings stated that S. tritici D5 can treat sago industry effluents and that the biomass produced may be considered SCP after some in-vitro and in-vivo analyses.

Automated summary

The study evaluated the bioremediation potential of cyanide resistant bacterial species on sago industry effluents and explored the possibility of utilizing the biomass as single cell protein (SCP). The results showed that the identified Streptomyces tritici D5 strains exhibited excellent resistance and degradation abilities towards cyanide. Additionally, the study found that the most effective organic pollutant reduction occurred at temperatures of 35 degrees C and 45 degrees C, with 25 degrees C also showing promising results. The findings suggest that S. tritici D5 can be used for the treatment of sago industry effluents, with the yielded biomass potentially serving as SCP after further analysis.