Publications by authors named "Arvind Bharani R S"

This study investigated the effectiveness of a pectin-nano zero-valent iron-based nanocomposite in adsorbing heavy metals in bimetallic form (chromium‑lead mixture), along with assessing its antibacterial properties. The nanocomposite was synthesized using a straightforward dispersion method, employing eco-friendly components like biocompatible pectin sourced from banana peels and nano-scale zero-valent iron. Analytical characterization confirmed the formation of stable, nano-crystalline particles with active interactions between the functional groups of pectin and nano iron.

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The Earth's atmosphere contains ultrafine particles known as aerosols, which can be either liquid or solid particles suspended in gas. These aerosols originate from both natural sources and human activities, termed primary and secondary sources respectively. They have significant impacts on the environment, particularly when they transform into ultrafine particles or aerosol nanoparticles, due to their extremely fine atomic structure.

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Biocomposites based on starch- gum acacia- agar, chitosan- starch- agar, starch- poly vinyl alcohol- agar were synthesized by simple, green route principles and the various characterization techniques like fourier infrared spectroscopy, SEM revealed the highly stable micro dimenstional that specially interacted with functional groups of polymers -herbicidal metabolites. Respective biocomposite was prepared by mixing equal volume of the selected polymer (1;1;1 ratio) with known concentration (100 mg of in distilled water followed by the addition of reconstituted herbicidal metabolites (100 mg or 0.1 g).

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Biocompatible, eco-friendly, highly economical packaging methods should be needed as conventional packaging is known to cause undesirable effects. As food packaging is the major determining factor of food safety, the selection or methods of packaging materials plays a pioneering role. With this scope, modern food technology seeks unique sustainable approaches for the fabrication of package materials with notable desired properties.

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The present study evaluates the biocompatibility of silver and zinc oxide nanoparticles with various effective microorganisms (EM), like beneficial microbial formulations. The respective nanoparticle was synthesised by chemical reduction of metal precursor with reducer via simple route green technology principles. The synthesised nanoparticles were characterised by UV visible spectroscopy, scanning electron microscopy (SEM), and X-ray diffraction (XRD) studies, revealing highly stable, nanoscale particles with marked crystallinity.

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Food preservation using biopreservative agents mainly microbial based metabolites have gained more attention in the modern food sector due to their broad spectrum anti-microbial efficacy with high biocompatibility. However, the effectiveness of these biopreservatives is highly dependent on suitable formulation which will enhance the desired efficacy without affecting the nutritional value of the foods. Polylysine-actinomycete derived anti-microbial metabolite is used as biopreservative agent in various food products.

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Nanomaterials mainly nanocomposites possess unique physical and chemical properties which makes them superior and indispensable. Though much research has been focused on the properties and application of nanocomposites, the eco-toxicity assessment is one among top priority, which aims to protect the population of concerned biological component and their ecosystem. With this objective, the present study has undertaken an initiation to evaluate the efficacy of chitosan-silver nanocomposite for methyl orange adsorption property (CS-AgNC) and also assessed the toxicity impact on growth parameters of freshwater Tilapia.

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In this present study, a highly stable gum acacia -gold nanocomposite fabricated with food preservative agent natamycin (GA-AuNC-NT) was prepared via green science principles under in vitro conditions. Various characterisation techniques reveal highly stable structural, functional properties of the synthesised nanocomposite with marked antifungal activity and adsorption efficacy against congo red dye. The antifungal activity was investigated against the fungal strain Aspergillus ochraceopealiformis isolated from spoiled, expired bread.

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Among the diverse nanomaterials, polymer-based nanocomposites are gained more attention due to their high efficacy, target biological activities, biodegradability and biocompatibility-gum acacia (GA) - a polymer obtained from acacia trees-is considering the multifunctional nanocomposite synthesis. Distinctive Physico-chemical and biocompatibility properties of gum acacia are utilised to prepare a highly stable, biologically active, eco-friendly Nanocomposite. In this current investigation, gum acacia - poly ethylene glycol grafted iron oxide nanocomposite (GA-PEG-IONC) was synthesised by in situ green science principles.

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Antigen delivery framework utilising polymer-based nanomaterial is broadly used in biomedicine because of their high efficacy, antigenicity and biocompatibility. In this study, hepatitis B surface antigen fabricated chitosan-polyethylene glycol nanocomposite (HBsAg-CS-PEG NC) was prepared by in situ ionic gelation method which brought about highly stable nanoformulation that was characterised by electron microscopy, atomic force microscopy (AFM) Fourier transform infrared spectroscopy (FTIR). Particles morphology by electron microscopy studies reveals spherical, electron-dense, nanostructure with 100-120 nm.

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In the present study, enhanced pesticidal activity and biocompatibility of chitosan nanocomposite prepared with biocompatible polymer chitosan - insecticidal metabolites derived from potential fungal biopesticidal agent Nomuraea rileyi were studied. Insecticidal metabolites were isolated from the culture filtrate of fungal strain grown in sabouraud maltose yeast extract broth (SMYB) and the collected filtrate was extracted with ethyl acetate followed by purification using G-60 silica gel column. Chitosan nanocomposite was prepared with metabolites thus acquired by ionic gelation method.

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