Download or read book Effect of PH on Metal and Nanoparticle microbe Interactions written by Benjamin Adam Neely and published by . This book was released on 2010 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Metal Microbe Interactions and Bioremediation written by Surajit Das and published by CRC Press. This book was released on 2017-04-07 with total page 813 pages. Available in PDF, EPUB and Kindle. Book excerpt: Around the World, metal pollution is a major problem. Conventional practices of toxic metal removal can be ineffective and/or expensive, delaying and exacerbating the crisis. Those communities dealing with contamination must be aware of the fundamentals advances of microbe-mediated metal removal practices because these methods can be easily used and require less remedial intervention. This book describes innovations and efficient applications for metal bioremediation for environments polluted by metal contaminates.
Download or read book Handbook of Metal Microbe Interactions and Bioremediation written by Surajit Das and published by CRC Press. This book was released on 2017-04-07 with total page 1149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Around the World, metal pollution is a major problem. Conventional practices of toxic metal removal can be ineffective and/or expensive, delaying and exacerbating the crisis. Those communities dealing with contamination must be aware of the fundamentals advances of microbe-mediated metal removal practices because these methods can be easily used and require less remedial intervention. This book describes innovations and efficient applications for metal bioremediation for environments polluted by metal contaminates.
Download or read book Plant Microbes Engineered Nano particles PM ENPs Nexus in Agro Ecosystems written by Pardeep Singh and published by Springer Nature. This book was released on 2021-03-22 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a collection of cross-disciplinary research, with contributions addressing all key features of the plant/microbe/ENP nexus in agro-ecosystems. The uptake, transport and transformation of nanoparticles in plants have attracted more and more attention in the past several years. Especially, the impact of Engineered Nanoparticles (ENPs) on bioprocesses; low-, medium- and high-level dose responses in the microbial community of soil; and long-, medium- and short-term exposure responses, particularly microbial nitrogen transformations, are just a few of the aspects involved. Since ENPs are used in many industries, including cosmetics, agriculture, medicine, food technology and waste management, their transport through biogeochemical cycles is an important focus of many studies today. Specifically, ENP–microbe interaction has been analysed with regard to disease treatment for plants; it plays a vital role in disease inhibition by releasing metal ions that act through many pathways – e.g. reactive oxygen species (ROS) generation, DNA transformation and disruption of the cell cycle – to stop cell growth in the pathogen. Due to these properties, ENPs are also used as slow release or delayed release pesticides and fungicides, and as carrier systems for growth-promoting hormones. Despite their multiple uses in various industries, the negative effects of ENPs are still a major concern for the scientific community and consumers alike. For example, their transport to various food chains has been reported to have adverse effects. This raises a degree of doubt concerning a rapidly growing scientific field with major applications in many industries. From a sustainable development perspective and particularly to ensure food security in light of the uncertainty accompanying climate change, it is imperative to address this divergence by focusing on the plant/microbe/ENP nexus.
Download or read book Biological Effects of Metal Nanoparticles written by Elena Mikhailovna Egorova and published by Springer. This book was released on 2016-04-26 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive overview of recent studies conducted on the biological effects of metal nanoparticles. It also provides a solid theoretical foundation and various metal nanoparticle synthesis methods. Part I reviews the main chemical methods used for synthesizing metal nanoparticles in a solution and describes original method of biochemical synthesis, as well as some special procedures developed specifically for studying the biological activity of nanoparticles. Part II analyzes current literature on the effects of metal nanoparticles observed in microorganisms and addresses the influence of silver nanoparticles obtained by biochemical synthesis on biological objects on various organization levels, namely on microorganisms, acellular slim mold, unicellular alga, plant seeds and mammalian cells. The last section explains the central problems common in studies on the biological effects of metal nanoparticles and outlines potential uses of this trend in bio-nanotechnologies. This book is aimed at specialists, professors and students aspiring to expand their knowledge about the biological activities of metal nanoparticles and nanoparticle-containing materials.
Download or read book Metal microbe Interactions written by Robert K. Poole and published by . This book was released on 1989 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new title provides information on the relationships of such biological materials as yeasts, fungi, and plasmids with metals they come in contact with. Readers will find in-depth discussions by noted experts in their respective fields on the toxicity of heavy metals, accumulation and precipitation of sulphides, and the reactions of bacterial cell walls to the presence of metal ions. This volume is ideal for undergraduates and graduates, as well as researchers unfamiliar with metal-microbe interactions who are seeking a useful introduction to the field.
Download or read book Microbial Nanobionics written by Ram Prasad and published by Springer. This book was released on 2019-06-18 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Nanobionics: Volume 2, Basic Research Applications continues the important discussion of microbial nanoparticle synthesis with a focus on the mechanistic approach of biosynthesis towards nanobionics. This volume also explores the toxicity of nanomaterials in microbes and their effect on human health and the environment. Special Emphasis is given to the use of polymeric nanomaterials in smart packing for the food industry and agricultural sector. The future of nanomaterials for detection of soil microbes and their interactions and tools for environmental remedies is also comprehensively covered. The rich biodiversity of microbes make them excellent candidates for potential nanoparticle synthesis biofactories. Through a better understanding of the biochemical and molecular mechanisms of the microbial biosynthesis of metal nanoparticles, the rate of synthesis can be better developed and the monodispersity of the product can be enhanced. The characteristics of nanoparticles can be controlled via optimization of important parameters, such as temperature, pH, concentration and pressure, which regulate microbe growth conditions and cellular and enzymatic activities. Large scale microbial synthesis of nanoparticles is a sustainable method due to the non-hazardous, non-toxic and economical nature of these processes. The applications of microbial synthesis of nanoparticles are wide and varied, spanning the industrial, biomedical and environmental fields. Biomedical applications include improved and more targeted antimicrobials, biosensing, imaging and drug delivery. In the environmental fields, nanoparticles are used for bioremediation of diverse contaminants, water treatment, catalysis and production of clean energy. With the expected growth of microbial nanotechnology, this volume will serve as a comprehensive and timely reference.
Download or read book Nanoparticles and Plant Microbe Interactions written by Sahadevan Seena and published by Elsevier. This book was released on 2023-04-04 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoparticles and Plant-Microbe Interactions: An Environmental Perspective, Volume Seven in the Nanomaterial-Plant Interactions series, provides comprehensive coverage on how nanoparticles can impact plant-microbe interactions. Key themes include nanoparticle synthesis, nano-phytoremediation, nano-farming, the negative impacts of nanoparticles, and nanomaterials in mitigating stress. This will be an essential read for any scientist or researcher looking to assess and understand the potential toxicological risks associated with plant nanotechnology, with particular focus on plant-microbe interactions. Nanotechnology is an emerging field with a vast range of nano-based products for commercial exploitation. The interactions of nanoparticles, plants and microbes can be harnessed in several applications, including alleviating environmental pollution. In addition to the aforementioned content, the book also explores concerns surrounding the toxicity of nanoparticles themselves, an important aspect to be aware, along with potential negative effects. Discusses the latest advances in the use of nanotechnology in plants and plant-microbe interactions Considers the potential negative impacts of nanotechnology on the environment Presents the applications of nanomaterials, including their role in stress mitigation
Download or read book Bacteria Metal Interactions written by Daad Saffarini and published by Springer. This book was released on 2015-05-20 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a detailed description and analysis of the reduction and metabolism of metals and metalloids by sulfate reducing bacteria. The molecular mechanisms of bacterial resistance to copper are examined as well as extracellular electron transfer and bacterial metal oxide respiration. Furthermore, in this book enrichment, isolation, and physiology of magnetotactic bacteria are discussed. The interactions of bacteria with metals in natural environments and their role in metal cycling have been studied for decades. Advances in studies of bacteria-metal interactions identified numerous important aspects of these interactions, such as bioremediation of metal-contaminated environments, the role of metals in redox reactions and other cellular functions, as well as the role of metals in toxicity and infection. Microbiologists, environmental scientists, and students interested in microbe interactions with metals and their effect on the environment and their application in biotechnology will be interested in the topics discussed in the book.
Download or read book Co Relating Metallic Nanoparticle Characteristics and Bacterial Toxicity written by Anil K. Suresh and published by Springer. This book was released on 2015-03-28 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This brief gives a concise overview of nanoparticles and their microbial toxicity. It introduces various nanoparticles that are considered lethal to microbial cells (bacteria, virus and fungus) placing an emphasis on metal and metal oxide nanoparticles. The synthesis procedures (physical, chemical, microbial) that are often employed in their fabrication are also outlined. The interaction of various nanoparticles with microbes is described with attention given to the role of additives in the form of solvents, surfactants, capping materials. Commonly used experimental and analytical techniques that are often used to evaluate and determine the toxicity of nanoparticles towards different microorganisms are presented and comparative assessments on the differences between these procedures are described. The brief ends by explaining the toxicity of metal and metal oxide nanoparticles to microorganisms.
Download or read book Nanoscience and Plant Soil Systems written by Mansour Ghorbanpour and published by Springer. This book was released on 2017-02-14 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides in-depth reviews of the effects of nanoparticles on the soil environment, their interactions with plants and also their potential applications as nanofertilizers and pesticides. It offers insights into the current trends and future prospects of nanotechnology, including the benefits and risks and the impact on agriculture and soil ecosystems. Individual chapters explore topics such as nanoparticle biosynthesis, engineered nanomaterials, the use of nanoclays for remediation of polluted sites, nanomaterials in water desalination, their effect on seed germination, plant growth, and nutrient transformations in soil, as well as the use of earthworms as bioremediating agents for nanoparticles. It is a valuable resource for researchers in academia and industry working in the field of agriculture, crop protection, plant sciences, applied microbiology, soil biology and environmental sciences.
Download or read book Nanobiotechnology written by Sougata Ghosh and published by Elsevier. This book was released on 2021-05-20 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanobiotechnology: Microbes and Plant Assisted Synthesis of Nanoparticles, Mechanisms and Applications covers in detail the green synthesis of nanostructures of tailor-made size, shape and physico-chemical and opto-electronic properties. The rationale behind the selection of bacteria, cyanobacteria, algae, fungi, virus and medicinal plants for the synthesis of biologically active exotic nanoparticles for biomedical applications is also part of this book. It also explores metal recovery, bioconversion, detoxification and removal of heavy metals using nanobiotechnology and discusses the potential of nanobiotechnology to address environmental pollution and toxicity. The book further covers the economic and commercial aspects of such green nanobiotechnology initiatives, its current status in intellectual property rights like patents filed so far globally, technology transfers, and market potential. This information enables one to decipher the scope of biogenic nanoparticles and its prospects. Provides an overview on the general and applied aspects on nanotechnology Gives the scope of exploring bacteria, fungi, algae, virus and medicinal plants for the synthesis of exotic nanoparticles Furnishes a comprehensive report on the underlying molecular mechanisms behind the biosynthesis of nanoparticles Outlines sustainable alternative strategies of bioremediation of heavy metals, metal recovery, detoxification and bioconversion using nanobiotechnology Explores the promises of patenting, technology transfer and commercialization potential of biogenic nanoparticles
Download or read book Microbial Nanobionics written by Ram Prasad and published by Springer Nature. This book was released on 2019-11-30 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Nanobionics: Volume 1, State of the Art, discusses a wide range of microbial systems and their utilization in biogenic synthesis of metallic nanoparticles. The rich biodiversity of microbes makes them excellent candidates for potential nanoparticle synthesis biofactories. Through a better understanding of the biochemical and molecular mechanisms of the microbial biosynthesis of metal nanoparticles, the rate of synthesis can be better developed and the monodispersity of the product can be enhanced. The characteristics of nanoparticles can be controlled via optimization of important parameters, such as temperature, pH, concentration and pressure, which regulate microbe growth conditions and cellular and enzymatic activities. Large scale microbial synthesis of nanoparticles is a sustainable method due to the non-hazardous, non-toxic and economical nature of these processes. The applications of microbial synthesis of nanoparticles are wide and varied, spanning the industrial, biomedical and environmental fields. Biomedical applications include improved and more targeted antimicrobials, biosensing, imaging and drug delivery. In the environmental fields, nanoparticles are used for bioremediation of diverse contaminants, water treatment, catalysis and production of clean energy. With the expected growth of microbial nanotechnology, this volume will serve as a comprehensive and timely reference.
Download or read book Metal Oxide Nanoparticles in Complex Environments written by Irem Bahanur Ustunol and published by . This book was released on 2021 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanoscience and nanotechnology are research areas that have shown great promise towards addressing clean and sustainable energy, environmental protection, and human health. Metal oxide nanoparticles are widely used in various applications, including removing pollutants from contaminated water, tracking cancer cell growth, targeted drug delivery. These nanoparticles are highly reactive, and their abundance in the environment brings potential concerns to their exposure, leading to increased interactions with biomolecules that have impactful environmental and health effects. Ecological systems have multi-components, including natural organic matter, oxyanions, and biological macromolecules; biological systems also contain complexity as proteins and nutrients can all be found at the nanomaterial-water interface upon nanoparticle exposure. Although significant research has been pursued on the surface transformations of metal oxide nanoparticles, multi-component adsorption kinetics, changes in adsorbate structure, and the impacts on the nanomaterial properties in complex environments remain unclear. Once nanoparticles are introduced in complex aqueous biological and environmental systems, proteins adsorb onto their surfaces and form a dynamic layer termed "corona." Newly occurred corona may change the nanoparticle interfacial state and its biological and ecological identity. If altered, the new identity influences the nanoparticle fate within the surrounding complex media. Details of protein and amino acid (building block of proteins) interactions with nanoparticles and substantial structural change on nanoparticle surfaces remain unclear. These processes can be affected by various factors due to the complexities of nano-bio surface interactions. Therefore, it is necessary to study multiple parameters individually, and a systematic study on the impacts of influential factors on the adsorption at the nano-bio interface is strongly desired. The research presented in this dissertation pursues a greater understanding of metal oxide nanoparticle characterizations, implications, and biomolecule-nanoparticle interactions from studies of amino acid and protein adsorption. Nanoparticle- and environmental-related factors, including effects of pH, nanoparticle-type, biomolecule concentration, pre-adsorbed phosphate and lipopolysaccharides, and nanoparticle production in a workplace environment (occupational health study), were investigated. We studied the influencing factors of the complex environment individually to examine each aspect in detail. Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy (ATR-FTIR), as well as various microscopic and spectroscopic tools, were employed to help better understand the impact of these factors. In this dissertation, adsorption of [alpha]-amino acids, lysine, glutamic acid, glycine, and serine, onto TiO2 nanoparticles in buffered solutions was determined. The predominant molecular surface species and the adsorption affinity were highly pH-dependent. Adsorption of lysine and glycine were increased proportionally with changes in pH, whereas glutamic acid adsorption decreased with increasing pH. We attributed these differences to the functional groups of different species and the TiO2 surface charge at each pH. Furthermore, the effects of nanoparticle type and amino acid concentration on the mechanisms of amino acids, lysine, glutamic acid, aspartic acid, and arginine, adsorption on [alpha]-Fe2O3 nanoparticles were investigated. The detailed chemistry in the adsorption processes implied the formation of outer-sphere and inner-sphere complex differences between different nanomaterials. Combined in-situ ATR-FTIR and curve-fitting provides insights and a greater understanding of changes in secondary structures of bovine serum albumin (BSA) and [beta]-lactoglobulin ([beta]-LG) upon adsorbed onto [alpha]-Fe2O3 nanoparticles in the presence and absence of co-adsorbed phosphate. The results indicated that structural changes were time-dependent, and the existence of pre-adsorbed phosphate influenced adsorption and desorption kinetics. An additional part of this work showed that pre-adsorbed lipopolysaccharide additionally played a role in the interaction of Immunoglobulin G (IgG) adsorbed onto [alpha]-Fe2O3 nanoparticles. In agreement with the [beta]-LG adsorption, a significant change in Amide I/II ratio was observed for adsorbed IgG, indicating changes in the protein secondary structure compared to the solution phase. Deconvolution analyses revealed that the [alpha]-helix content of the adsorbed IgG was higher than the unbound conformation in the presence of lipopolysaccharides. Moreover, to complement our understanding of protein and amino acid adsorption, we also investigated airborne nanoparticle presence in different production sites in an occupational health study. Identified nanoparticles in these settings were characterized by two forms: sub-micrometer fractal-like agglomerates from activities such as welding; and super-micrometer particles (nanoparticle collectors) with nanoparticles coagulated on their surfaces. These agglomerates were proposed to affect deposition and transport inside the respiratory system. The respirable incidental nanoparticles would have corresponding health implications regarding their primary and/or secondary sites of uptake. Overall, the research in this dissertation provides essential insights into understanding the behavior of metal oxide nanoparticles in complex environments. Studies on amino acid and protein adsorption, along with the detailed characterization of the nano-bio interface with spectroscopic and microscopic methods, allowed us to understand the effects of a multitude of influences on biomolecule-nanoparticle surface interactions.
Download or read book Aspects of Transition Metal Interaction with Bacteria written by Gabriela Hidalgo Casanueva and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fate and transport of transition metals is of great interest because of metal toxicity and bioavailability. The growth of all organisms is dependent on the acquisition of essential metals. However, at higher concentrations heavy metals can inhibit the normal functioning of cells. Overall physiological effects of metals on biological systems are determined by metal speciation, not by their total concentration. Environmental fate and speciation of metals are influenced by interdependent biogeochemical variables such as pH, adsorption, complexation and biological interactions. Biofilms can generate three-dimensional physicochemical gradients that create microenvironments where local conditions are substantially different from those in the surrounding medium. The use of functional tomographic imaging microscopy of ratiometric core-shell silica nanoparticle sensors was shown to be an effective tool to study the spatial and temporal evolution of pH microenvironments in Escherichia coli PHL628 and mixed-culture wastewater biofilms. Curli are amyloid extracellular fibers expressed by E. coli and other bacterial species. The role of curli in the tolerance of E. coli PHL628 to Hg(II) was examined. Curli- producing strains proved to be more resistant than a curli-deficient mutant to Hg(II). Higher fluorescence was measured in a curli-deficient mutant than in the wild type following an addition of Hg(II) to cells harboring the merR-gfp reporter. Measurement of Hg(II) adsorption kinetics revealed that curli increases the rate and extent of Hg(II) adsorption. These findings indicate that curli sorb Hg(II) and reduce the amount of Hg(II) that reaches the cytoplasm. Microarray analysis of E. coli MG1655 cells grown in Hg(II) revealed upregulation of genes for arginine biosynthesis and transport. Increased resistance of E. coli to Hg(II) was not observed when the medium was supplemented with arginine. Induction of transcription of an arginine transport gene, artJ, by Hg(II) was confirmed with an artJlux reporter and exposure of this bioreporter to Zn(II) and Cd(II) revealed that these metals also induce the transcription of artJ. Furthermore, a merR-gfp bioreporter showed that arginine supplementation did not alter Hg uptake. These results indicate that group 12(IB) elements may act to induce the transport of arginine, but that arginine availability is not a strategy for alleviating their toxicity.
Download or read book Rhizosphere Engineering written by Ramesh Chandra Dubey and published by Academic Press. This book was released on 2022-02-15 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhizosphere Engineering is a guide to applying environmentally sound agronomic practices to improve crop yield while also protecting soil resources. Focusing on the potential and positive impacts of appropriate practices, the book includes the use of beneficial microbes, nanotechnology and metagenomics. Developing and applying techniques that not only enhance yield, but also restore the quality of soil and water using beneficial microbes such as Bacillus, Pseudomonas, vesicular-arbuscular mycorrhiza (VAM) fungi and others are covered, along with new information on utilizing nanotechnology, quorum sensing and other technologies to further advance the science. Designed to fill the gap between research and application, this book is written for advanced students, researchers and those seeking real-world insights for improving agricultural production. Explores the potential benefits of optimized rhizosphere Includes metagenomics and their emerging importance Presents insights into the use of biosurfactants
Download or read book Microbial Nanobionics written by Ram Prasad (Professor of microbiology) and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Nanobionics: Volume 2, Basic Research Applications continues the important discussion of microbial nanoparticle synthesis with a focus on the mechanistic approach of biosynthesis towards nanobionics. This volume also explores the toxicity of nanomaterials in microbes and their effect on human health and the environment. Special Emphasis is given to the use of polymeric nanomaterials in smart packing for the food industry and agricultural sector. The future of nanomaterials for detection of soil microbes and their interactions and tools for environmental remedies is also comprehensively covered. The rich biodiversity of microbes make them excellent candidates for potential nanoparticle synthesis biofactories. Through a better understanding of the biochemical and molecular mechanisms of the microbial biosynthesis of metal nanoparticles, the rate of synthesis can be better developed and the monodispersity of the product can be enhanced. The characteristics of nanoparticles can be controlled via optimization of important parameters, such as temperature, pH, concentration and pressure, which regulate microbe growth conditions and cellular and enzymatic activities. Large scale microbial synthesis of nanoparticles is a sustainable method due to the non-hazardous, non-toxic and economical nature of these processes. The applications of microbial synthesis of nanoparticles are wide and varied, spanning the industrial, biomedical and environmental fields. Biomedical applications include improved and more targeted antimicrobials, biosensing, imaging and drug delivery. In the environmental fields, nanoparticles are used for bioremediation of diverse contaminants, water treatment, catalysis and production of clean energy. With the expected growth of microbial nanotechnology, this volume will serve as a comprehensive and timely reference.
