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G. Narendrakumar

Bio: G. Narendrakumar is an academic researcher from Sathyabama University. The author has contributed to research in topics: Solid-state fermentation & Response surface methodology. The author has an hindex of 6, co-authored 43 publications receiving 191 citations.

Papers
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Journal ArticleDOI
TL;DR: Interestingly, fucoxanthin showed protective effect against H2O2-induced intracellular ROS and cytotoxicity on fibroblast cells at the concentration of 120 μM, suggesting that UAE could be implemented for the extraction at high percentage and eventually be utilized these biomolecules as nutraceuticals.

53 citations

Journal Article
TL;DR: The result of the experiment shows that EM has the potential to improve the effectiveness of treatment of domestic wastes.
Abstract: Effective Microorganisms (EM), a culture of  coexisting  beneficial microorganism predominantly consisting of lactic acid bacteria, photosynthetic bacteria, yeast, fermenting fungi and actinomycetes that are claimed to enhance microbial turnover in soil and thus known increase soil macronutrients and increases plant growth and yield. and treatment of sewages or effluents. In the present study the EM formulation was evaluated for reduction of of Alkalinity, Total dissolved solids, Biological oxygen demand, and Chemical oxygen demand of domestic sewage under standard condition.  All the parameters that were tested showed distinct reduction. But total hetrototropic bacterial and yeast population was increased. No change in fungal and actinomycetes population was recorded.The result of the experiment shows that EM has the potential to improve the effectiveness of treatment of domestic wastes.

31 citations

Journal ArticleDOI
TL;DR: The synthesised nanoparticles cause significant amount of deterioration to bacterial cells, when examined using microscopic and cell viability analysis, and the antimicrobial activity of biosynthesize is evaluated.
Abstract: Biosynthesis of gold nanoparticles has been carried out with various sources like bacteria, plants and algae. Seaweeds have high nutritional and medicinal properties. Sargassum plagiophyllum is seaweed that has excellent antioxidant activity. This study aims at evaluating the antimicrobial activity of biosynthesize d gold nanoparticles from the extract of S. plagiophyllum. The synthesised nanoparticles were subjected to characterization studies and the mean particle size was found to be 65.87 nm. The biosynthesised gold nanoparticles were treated with gram negative bacteria Escherichia coli (ATCC 25922) and Salmonella typhi (ATCC 6539) and the antibacterial activity was studied using epifluorescence microscopy, atomic force microscopy (AFM) and Field emission Scanning electron microscopy (FE–SEM). The synthesised nanoparticles cause significant amount of deterioration to bacterial cells, when examined using microscopic and cell viability analysis.

20 citations

Journal ArticleDOI
TL;DR: In this article, the authors formulated an effective, alternative solid and liquid media to the currently available Pikovskaya (PVK) medium, which relies on the use of calcium phosphate and numerous inorganic components for the screening of phosphate-solubilizing bacteria.

19 citations


Cited by
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Journal ArticleDOI
TL;DR: The review identifies several perspectives for future research between the scientific community and private industry to design and develop a second generation of PBs products (biostimulant 2.0) with specific biostimulatory action to render agriculture more sustainable and resilient.
Abstract: Over the past ten years, interest in plant biostimulants (PBs) has been on the rise compelled by the growing interest of scientists, extension specialists, private industry and growers in integrating these products in the array of environmentally-friendly tools that secure improved crop performance and yield stability. Based on the new EU regulation PBs are defined through claimed agronomic effects, such as improvement of nutrient use efficiency, tolerance to abiotic stressors and crop quality. This definition entails diverse organic and inorganic substances and/or microorganisms such as humic acids, protein hydrolysates, seaweed extracts, mycorrhizal fungi and N-fixing bacteria. The current mini-review provides an overview of the direct (stimulatory on C and N metabolism) and indirect (enhancing nutrient uptake and modulating root morphology) mechanisms by which microbial and non-microbial PBs improve nutrient efficiency, plant performance and physiological status, resilience to environmental stressors and stimulate plant microbiomes. The scientific advances underlying synergistic and additive effects of microbial and non-microbial PBs are compiled and discussed for the first time. The review identifies several perspectives for future research between the scientific community and private industry to design and develop a second generation of PBs products (biostimulant 2.0) with specific biostimulatory action to render agriculture more sustainable and resilient.

227 citations

Journal ArticleDOI
TL;DR: In this article, the occurrences and fate of hazardous contaminants (dyes, pharmaceuticals and personal care products, heavy metals, fertilizer and pesticides) found in wastewater effluents are reviewed.

134 citations

Journal ArticleDOI
01 Jan 2021
TL;DR: In this paper, the overall view on work done so far on SPIONs is detailed and its properties and characteristics are detailed, where the formulation of SPIONS into drug-laden nanocarrier for exhibiting targeted drug delivery and its use in cancer treatment as hyperthermia is emphasised.
Abstract: Superparamagnetic iron oxide nanoparticles (SPIONs) have been recognized in numerous fields including nanobiotechnology, biomedical engineering, and many other fields for its inestimable applications. Superparamagnetic property and the smaller size of SPIONs are the major reasons for its utilization in various fields. In this review, the overall view on work done so far on SPIONS is detailed. Where, it started with different methods of synthesis of SPIONs including various types physical (such as gas-phase deposition, pulsed laser ablation, power ball milling), chemical (chemical co-precipitation, micro-emulsions, hydrothermal synthesis) and biological methods (using bacteria and plant) and are also elaborated. Its properties and characteristics are detailed. The formulation of SPIONs into drug-laden nanocarrier for exhibiting targeted drug delivery and its use in cancer treatment as hyperthermia is emphasised. Its various other applications consist of radiation therapy, environmental remediation, tissue engineering etc., which are also elaborated.

124 citations

01 Jan 2005
TL;DR: In this article, a mixture of diglycidylethers of bisphenol A (DGBBA)/tetrabromobromobisphenolate (DGEBTBA) and 4,4′-diaminodiphenylsulphone (DDS) was used to produce a Brominated epoxy resin (BER) containing 20% Br and its thermal stability was studied by high resolution thermogravimetry and IR spectroscopy.
Abstract: Abstract Brominated epoxy resin (BER) containing 20% Br has been prepared by curing a mixture of diglycidylethers of bisphenol A (DGBBA)/tetrabromobisphenol A (DGEBTBA) and 4,4′-diaminodiphenylsulphone (DDS). Its thermal stability has been studied by high resolution thermogravimetry and IR spectroscopy. Programmed heating condition using inert atmosphere has been applied to collect gaseous and high boiling product, which have been identified by means of gas chromatography–mass spectrometry (GC–MS). The mechanism of the thermal decomposition of the resin is discussed.

97 citations

Journal ArticleDOI
TL;DR: In this paper, a new crust-dust suppressant that is synthesized by graft copolymerization with polyvinyl alcohol and N-vinylpyrrolidone is presented.

93 citations