Selenium Research For Environment And Human Health Perspectives Technologies And Advancements

The biological importance of selenium has been firmly established by scientists for its intricate roles in various biochemical and physiological mechanisms related to animal and human health. To evaluate different facets of selenium in today’s complex environment and to provide a worldwide platform for multi-disciplinary selenium researchers, the 6th International Conference on Selenium in the Environment and Human Health was held from 27 to 30 October 2019 in Yangling/Xi’an, China. This proceedings volume brings together 103 extended abstracts prepared by contributors from academia, industry, and governmental agencies in 18 countries, including some most recent research findings among different selenium research disciplines from cell molecular and plant biology, geochemistry, biofortification, to environmental and health management. Selenium researchers worldwide provide extraordinary new knowledge on selenium in the peer-reviewed texts contained within this book.

Crop plants growing under field conditions are constantly exposed to various abiotic and biotic stress factors leading to decreased yield and quality of produce. In order to achieve sustainable development in agriculture and to increase agricultural production for feeding an increasing global population, it is necessary to use ecologically compatible and environmentally friendly strategies to decrease the adverse effects of stresses on the plant. Selenium is one of the critical elements from the biological contexts because it is essential for human health; however, it becomes toxic at high concentrations. It has been widely reported that selenium can promote plant growth and alleviate various stresses as well as increase the quantity and quality of the yield of many plant species. Nonetheless, at high concentrations, selenium causes phytotoxicity. In the last decade, nanotechnology has emerged as a prominent tool for enhancing agricultural productivity. The production and applications of nanoparticles (NPs) have greatly increased in many industries, such as energy production, healthcare, agriculture, and environmental protection. The application of NPs has attracted interest for their potential to alleviate abiotic and biotic stresses in a more rapid, cost-effective, and more sustainable way than conventional treatment technologies. Recently, research related to selenium-NPs-mediated abiotic stresses and nutritional improvements in plants has received considerable interest by the scientific community. While significant progress was made in selenium biochemistry in relation to stress tolerance, an in-depth understanding of the molecular mechanisms associated with the selenium- and nano-selenium-mediated stress tolerance and bio-fortification in plants is still lacking. Gaining a better knowledge of the regulatory and molecular mechanisms that control selenium uptake, assimilation, and tolerance in plants is therefore vital and necessary to develop modern crop varieties that are more resilient to environmental stress. This book provides a comprehensive overview of the latest understanding of the physiological, biochemical, and molecular basis of selenium- and nano-selenium-mediated environmental stress tolerance and crop quality improvements in plants. It helps researchers to develop strategies to enhance crop productivity under stressful conditions and to better utilize natural resources to ensure future food security and to reduce environmental contamination. Finally, this book is a valuable resource for promoting future research into plant stress tolerance, and a reference book for researchers working on developing plants tolerant to abiotic and biotic stressors as well as bio-fortification and phytoremediation.

This second and expanded edition of the first book on agromining (phytomining) presents a comprehensive overview of the metal farming & recovery of the agromining production chain. Agromining is an emerging technology that aims to transform the extraction of sources of target elements not accessible by traditional mining and processing techniques. Agromining, which is based on sustainable development, uses hyperaccumulator plants as 'metal crops' farmed on sub-economic soils or minerals wastes to obtain valuable target elements. This volume is edited and authored by the pioneers in the rapidly expanding field of agromining and presents the latest insights and developments in the field. This book provides in-depth information on the global distribution and ecology of hyperaccumulator plants, their biogeochemical pathways, the influence of rhizosphere microbes, the physiology and molecular biology of hyperaccumulation, as well as aspects of propagation and conservation of these unusual plants. It describes the agronomy of metal crops and opportunities for incorporating agromining into rehabilitation and mine closure, including test cases for agromining of nickel, cobalt, manganese, arsenic, selenium, cadmium, zinc, thallium, rare earth elements and platinum group elements. Since the first edition was published, there have successful nickel agromining field trials in the tropics (in Malaysia and Guatemala), and these are presented in a dedicated case study chapter. Other new chapters focus on the processing of bio-ore for elements other than nickel, such as rare earth elements and cadmium, and on agromining from industrial wastes such as tailings, and industrial by-products and sites. Furthermore, the book features two new chapters that provide a comprehensive assessment of accumulation a very wide range elements from the Periodic Table in various plant species around the globe, and a chapter on practical methods for discovery of hyperaccumulator plant species in the field and in the herbarium. This book is of interest to environmental professionals in the minerals industry, government regulators, and academics.

Advances in Food and Nutrition Research, Volume 97 provides interesting chapters written by an international board of authors. The topics covered in this book include the problematics of bacteriophages in dairy plants and methods for their monitorization and control, the obtention of antioxidant and antimicrobial compounds from sustainable sources and their application in meat and seafood products, the challenges and opportunities for vibrational spectroscopy to measure composition, and functional properties of foods, the physiological activity of bioactive peptides obtained from meat and meat by-products, the use of plant and marine-based polysaccharides for nano-encapsulation and their applications in food industry, the effects of early life stress on eating behavior and metabolism considering different factors that control appetite, the nutritional aspects of seafood and its health benefits, the use of Colocasia esculenta (L.) Schott and Xanthosoma sagittifolium (L.) Schott powder as a valid option for the nutritional and technological improvement of food products, and much more. The series provides the latest advances on the identification and characterization of emerging bioactive compounds with putative health benefits, and other functional compounds of relevance in foods as well as up-to-date information on food science, including raw materials, production, processing, distribution and consumption. Contains contributions that have been carefully selected based on their vast experience and expertise on the subject Includes updated, in-depth and critical discussions of available information, giving the reader a unique opportunity to learn Encompasses a broad view of the topics at hand

History: -- K.D. Watson, P. Wexler, and J. Everitt. -- Highlights in the History of Toxicology. -- Selected References in the History of Toxicology. -- A Historical Perspective of Toxicology Information Systems. -- Books and Special Documents: -- G.L. Kennedy, Jr., P. Wexler, N.S. Selzer, and L.A. Malley. -- General Texts. -- Analytical Toxicology. -- Animals in Research. -- Biomonitoring/Biomarkers. -- Biotechnology. -- Biotoxins. -- Cancer. -- Chemical Compendia. -- Chemical--Cosmetics and Other Consumer. -- Products. -- Chemical--Drugs. -- Chemical--Dust and Fibers. -- Chemical--Metals. -- Chemicals--Pesticides -- Chemicals--Solvents. -- Chemical--Selected Chemicals. -- Clinical Toxicology. -- Developmental and Reproductive Toxicology. -- Environmental Toxicology--General. -- Environmental Toxicology-- Aquatic. -- Environmental Toxicology--Atmospheric. -- Environmental Toxicology--Hazardous Waste. -- Environmental Toxicology--Terrestrial. -- Environmental Toxicology--Wildlife. -- Ep ...

From a new perspective, namely focusing on the interaction of selenium and mercury, this thesis provides new insights into traditional research on biogeochemical cycles of mercury in soil-plant interaction and associated human exposure and risks. The subject of this thesis is both valuable and timely, providing essential information not only on selenium-mercury interaction in the soil-plant system but also on how to assess the combined benefits and risk of co-exposure to mercury and selenium. This work also sheds light on future aspects regarding prevention, remediation and risk management for environmental mercury contamination. Presenting high-quality papers published in leading international SCI journals such as Environmental Health Perspectives and Environmental Science & Technology and having been recognized with the Special Award of Presidential Scholarship Award and Excellent Doctoral Dissertations Prize of the Chinese Academy of Sciences (CAS), this thesis offers a valuable resource for scientific communities, policy-makers and non-experts who are interested in this field. Dr. Hua Zhang works at the Norwegian Institute for Water Research (NIVA), Oslo, Norway.

The contamination of environment and water resources by Selenium (Se) and its oxyanions from various sources are emerging contaminants of significant health and environmental concern. The primary sources include agricultural drainage water, mine drainage, residues from fossil fuels, thermoelectric power plants, oil refineries, and metal ores. Various methods and technologies have been developed which focus on the treatment of selenium-containing waters and wastewater. High concentrations of selenium in water cause various adverse impact to human health, such as carcinogenic, genotoxic, and cytotoxic effects. But in the lower concentrations, it is a useful constituent of the biological system. The range between toxicity and deficiency of selenium is minimal (40 to 400 μg per day), due to its dual nature. Selenium Contamination in Water contains the latest status and information on selenium’s origin, its chemistry and its toxicity to humans. The book represents a comprehensive and advanced reference book for students, researchers, practitioners, and policymakers in working in the field of metalloids, in particular selenium. A special emphasis is given on its geological distribution, monitoring techniques, and remedial technologies. As such, the authors critically analyze the various techniques used for the monitoring and removal of selenium from water. Featuring chapters arranged according to the major themes of the latest research, with specific case-studies from industrial experiences of selenium detection and removal, Selenium Contamination in Water will be particularly valued by researchers, practitioners, and policymakers in working in the field of metalloids including selenium.