Sougata Ghosh - RK University (original) (raw)

Papers by Sougata Ghosh

Functionalized biogenic nanoparticles and their applications

Nanobiotechnology

Chapter 9 Nanopesticides: challenges and opportunities

Plant Protection

Conversion of Agricultural Wastes into Biochar and Its Characteristics

Biochar and its Application in Bioremediation

Cyanobacteria Mediated Bioremediation of Hazardous Dyes

Microbial Remediation of Azo Dyes with Prokaryotes, 2022

Running head verso: Salunke et al Running head recto: P. zeylanica-mediated synthesis of NPs and ... more Running head verso: Salunke et al Running head recto: P. zeylanica-mediated synthesis of NPs and antibiofilm activity DOI:

open access to scientific and medical research Open Access Full Text Article

Synthesis of silver nanoparticles using Dioscorea bulbifera tuber extract and evaluation of its s... more Synthesis of silver nanoparticles using Dioscorea bulbifera tuber extract and evaluation of its synergistic potential in combination with antimicrobial agents

Natural Compounds from Plumbago zeylanica as Complementary and Alternative Medicine

Handbook of Oxidative Stress in Cancer: Therapeutic Aspects, 2022

Microbial biosorbents for heavy metal removal

New Trends in Removal of Heavy Metals from Industrial Wastewater, 2021

Abstract The continuous discharge of untreated effluents from industries associated with fertiliz... more Abstract The continuous discharge of untreated effluents from industries associated with fertilizers, metallurgy, leather, aerospace, photography, mining, electroplating, pesticide, surface finishing, iron and steel, energy and fuel production, electrolysis, metal surface treating, electroosmosis, and appliance manufacturing has increased the global threat of heavy metal contamination in water bodies and the overall ecosystem. Toxic heavy metals such as chromium (Cr), lead (Pb), zinc (Zn), arsenic (As), copper (Cu), nickel (Ni), cobalt (Co), cadmium (Cd), and mercury (Hg) are nonbiodegradable and tend to accumulate in living organisms, leading to several diseases. Conventional methods for heavy metal removal are extremely expensive and inefficient when applied for larger volumes of water. Moreover, these methods generate huge amounts of sludge and other toxic products for which disposal is a matter of concern. As environment-friendly alternatives, microbial biosorption and bioaccumulation have emerged recently, which involve bacteria, cyanobacteria, algae, and fungi. Herein, we present an elaborate description of various mechanisms of biosorption such as complexation, chelation, coordination, ion exchange, precipitation, and reduction. Exotic nanostructures formed by biosorption are also included, indicating the significance of nanobiotechnology in heavy metal removal. Furthermore, various process parameters (such as pH, temperature, initial concentration of the metal ions, biosorbent dose, and speed of agitation) are also discussed, which highly affect the overall biosorption process. Various biomass modification strategies by physical and chemical treatment before use and economical aspects, owing to regeneration and reuse of microbial biosorbents after removing the heavy metals, are also highlighted in the chapter, along with their applications.

Toxic Metal Removal Using Microbial Nanotechnology

Microbial Nanotechnology, 2020

Synergistic Bacteriostatic Effect of Streptomycin-Coated Nanomagnetic Functional Oxides

BioNanoScience, 2021

Frontiers in Microbiology, 2021

Development, dynamics and control of antimicrobial-resistant bacterial biofilms: a review

Environmental Chemistry Letters, 2021

Antimicrobial resistance is a major health issue inducing the inefficiency of antimicrobial drugs... more Antimicrobial resistance is a major health issue inducing the inefficiency of antimicrobial drugs. Indeed, pathogenic microorganisms become resistant when frequently exposed to antimicrobial drugs. In particular, when bacteria are attached to a surface and expand as a biofilm, they become more resistant to antimicrobials because single or multiple bacterial species are embedded in a slimy extracellular polymeric substance that acts like a shield. Biofilms often contaminate medical devices and food industrial equipment, thus leading to infections and food spoilage. Here, we review the basics of biofilm development from a planktonic bacterium; signaling in biofilm and relationship with antimicrobial resistance; biofilm control and destruction strategies using quorum sensing inhibitors, ultrasound, acidic electrolyzed water, and enzymatic and combination killing; and emerging approaches, such as bacteriophage-mediated disruption and antimicrobial peptides to control bacterial biofilms.

Nanopharmacokinetics: key role in in vivo imaging

Nano-Pharmacokinetics and Theranostics, 2021

Sapindus mukorossi as Novel Niche for Detergent Degrading Bacteria

SSRN Electronic Journal, 2020

Widely used chemical detergents and surfactants for domestic and industrial purposes are released... more Widely used chemical detergents and surfactants for domestic and industrial purposes are released in the water bodies through drainages which poses a threat to both aquatic life and the crops when found in water used for irrigational purposes. Herein we report the isolation and characterization of detergent degrading bacteria from Sapindus mukorossi pericarp extract. Further their ability to degrade the detergent was checked against four commercially available detergents namely, Surf Excel, Tide Plus, Ariel and Rin. Appropriate control experiment was set up using sodium dodecyl sulphate (SDS). Degradation of detergent was estimated quantitatively in terms of emulsification index against engine oil, coconut oil, groundnut oil and mustard oil. Among the cultures, DD5 (Pseudomonas putida) culture showed efficient detergent degrading activity on incubation in minimal medium supplemented with 4 detergents. The emulsification index of Surf Excel was reduced to 32 from 40 while for Tide the reduction was seen from 36 to 28 by DD5. DD1 reduced emulsification index of Tide Plus from 36 to 24. Visible colour change, turbidity and reduction in frothing confirmed the efficiency of the isolated cultures to degrade commercial detergents. Further optimization of the parameters will help to design low cost, rapid water treatment process beneficial to agriculture.

Journal of Nanoparticle Research, 2020

heterostructure (FZMH) has been successfully synthesized by a facile hydrothermal method within a... more heterostructure (FZMH) has been successfully synthesized by a facile hydrothermal method within a short hydrothermal time of 12 h at an optimized ZnO nanosphere (ZNS) concentration of 24 mM. The morphological and structural characterisations of FZMH have confirmed the formation of nanosheet-based ordered FZMH. The photocatalytic dye degradation performances of as-synthesized samples have been tested by decolourisation of methylene blue (MB) dye under the sunlight irradiation, and it is observed that the FZMH shows the highest MB dye degradation efficiency of6 7% at time 2 h. The pseudo-first-order reaction rate constant (k) of FZMH is found to be of~8.4 × 10 −3 min −1 which is 2.00 and 1.83 times higher than that of ZNSs and MoS 2 nanosheets (MNs), respectively. The antibacterial potentiality of ZNSs, MNs, and their nanocomposites on some Gram-positive and Gram-negative bacteria has been studied by well-known diffusion method. It is observed that among the different assynthesized samples, FZMH has exhibited selective and superior antibiofilm activity against Escherichia coli, Pseudomonas aeruginosa and Bacillus subtilis of 64,~69 and~84%, respectively. Hence, hydrothermally synthesized flower-like Z nO@ MoS 2 heterostructure can be used as an efficient photocatalyst to degrade different harmful dyes in water under the sunlight irradiation and superior antimicrobial activities against Gram-positive and Gram-negative bacteria have been explored.

Applied Microbiology and Biotechnology, 2018

Copper nanoparticles (CuNPs) and palladium nanoparticles (PdNPs) have attracted wide attention ow... more Copper nanoparticles (CuNPs) and palladium nanoparticles (PdNPs) have attracted wide attention owing to their multifaceted utility in catalysis, sensors, and biomedical applications. Their therapeutic spectrum includes anticancer, antiviral, antibacterial, antifungal, antidiabetic, antioxidant potential which rationalizes the exploration of diverse physical, chemical, and biological routes for fabrication. In this article, we focused on bacterium-assisted design of nanostructured copper and palladium for applications in therapy against multidrug-resistant pathogens, dehalogenation of diatrizoate, Heck coupling of iodobenzene, polymer electric membrane fuel cell, metal recovery, and electronic waste management. Further, hypothesis behind microbial synthesis of PdNPs in E. coli containing [NiFe] hydrogenase Hyd-1 is discussed. Similarly, detailed mechanism of synthesis and stabilization in Cyanobacteria is also documented. Both CuNPs and PdNPs act as potent chemotherapeutic agents that can further be enhanced by conjugation with drugs and/or fluorophores and ligands for simultaneous diagnosis and targeted drug delivery to the cancer site or infection. These bacteriogenic nanoparticles can be used in sensors and pollution control.

Journal of Nanomedicine & Nanotechnology, 2018

Nanomedicine & Nanotechnology J o ur nal of N a n o m ed icine & N a n o te chnolo g y

Metals, 2021

Bone injuries and fractures are often associated with post-surgical failures, extended healing ti... more Bone injuries and fractures are often associated with post-surgical failures, extended healing times, infection, a lack of return to a normal active lifestyle, and corrosion associated allergies. In this regard, this review presents a comprehensive report on advances in nanotechnology driven solutions for bone tissue engineering. The fabrication of metals such as copper, gold, platinum, palladium, silver, strontium, titanium, zinc oxide, and magnetic nanoparticles with tunable physico-chemical and opto-electronic properties for osteogenic scaffolds is discussed here in detail. Furthermore, the rational selection of a polymeric base such as chitosan, collagen, poly (L-lactide), hydroxyl-propyl-methyl cellulose, poly-lactic-co-glycolic acid, polyglucose-sorbitol-carboxymethy ether, polycaprolactone, natural rubber latex, and silk fibroin for scaffold preparation is also discussed. These advanced materials and fabrication strategies not only provide for appropriate mechanical strength ...

Biodegradation of Plastic by Fungi

Mycology: Current and Future Developments

Plastic is considered to be one of the most used polymers in industries, agriculture, packaging, ... more Plastic is considered to be one of the most used polymers in industries, agriculture, packaging, and household matters. The indiscriminate use and extensive accumulation of plastic wastes in our environment due to the unidirectional use of synthetic polymers without their proper degradation has posed a potent global threat to the environment. The environmental contamination has resulted in urgency for developing new strategies for degrading plastics. In recent years, reports on the biodegradation of synthetic plastics by microorganisms or microbial enzymes have sprung up, and these offer a possibility to develop biological treatment technology for plastic wastes. The unique ability of fungi to invade the polymer substrates with the help of enzymes has attracted the attention of researchers. Moreover, fungi produce a chemical substance termed hydrophobin, which helps in the fungal adhesion to the hydrophobic surface, followed by the penetration of the hyphae into the surface of the s...

Heavy Metal Removal by Bacillus for Sustainable Agriculture

Bacilli in Climate Resilient Agriculture and Bioprospecting, 2022