ISSN : 2663-2187

Characterization, Identification, and Cadmium Biosorption Capacity of Indigenous Bacillus cereus Strain Isolated from Industrial Contaminated Soil

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V. Sai Sruthi , J. Aravind Kumar , V. Naveen Sahith , K Sri Devi S. Sathish , D. Prabu
» doi: 10.48047/AFJBS.6.14.2024.11590-11604

Abstract

The current research on identification and characterization of cadmium-resistant Gram-positive Bacillus cereus (GPC1L), emphasizing its biosorption capabilities towards cadmium. Consequently, quantifying and characterizing the Exopolysaccharides (EPS) in biofilm production of the isolate GPC1 L. GPC1L was obtained from industrially contaminated soil based on high level of cadmium via enrichment culture. Subsequently, Morphological, Identification techniques of the strain GPC1L were performed using Gram staining, VITEK-MS Matrix-Assisted Laser Desorption Ionization Time-OF-Flight (MALDI-TOF) spectral analysis and 16S rRNA gene sequencing which was found to be Bacillus cereus in this study, Furthermore, Cadmium tolerance was evaluated which displayed peak cadmium tolerance at 6mgL -1 over 80 hrs. Biosorption capacity of GPC1L were gauged using inductively coupled plasma optical emission spectroscopy (ICP-OES) with the highest biosorption capacity recorded at 2mgL-1 . Remarkably, GPC1 L exhibited significant EPS production along with biofilm with a bacterial growth of 0.24 OD (660nm). The results propose that GPC1 L, identified as Bacillus cereus is a potential candidate for cadmium bioremediation providing insights for an effective strategy for sustainable bioremediation of cadmium from the ecosystem.

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