Chitosan in the Preservation of Agricultural Commodities


Book Description

Chitosan in the Preservation of Agricultural Commodities presents a cohesive overview of research topics regarding the production and characterization of chitosan, the development of coatings and fi lms, its functional properties, and antimicrobial potential of this compound on economically important agricultural commodities. It includes the modes of action from a physiological, enzymatic, and molecular perspective, and evaluations of the activity of chitosan nanocomposites and nanoparticles in biological models. The first section deals with the chemical characteristics and functional properties of chitosan and new chitosan-based biomaterials intended for food preservation. The second section covers various aspects of the control achieved by chitosan on different microorganisms affecting various horticultural commodities, grains, and ornamentals, and its modes of action. The third section explores enzymatic and gene expression induction by chitosan application on fruit and vegetables; the fourth section offers insight on the use of chitosan nanocomposites in biological models associated with food conservation and control of microorganisms. Analyzes chitosan chemical and functional properties Explores obtaining, characterizing, and developing chitosan coatings and fi lms for agricultural use Presents functional properties, antimicrobial potential, and modes of action of chitosan from a physiological, enzymatic, and molecular perspective Includes biological models of the activity of chitosan nanocomposites and nanoparticles




Nanotechnology-Enhanced Food Packaging


Book Description

Nanotechnology-Enhanced Food Packaging Timely overview of functional food packaging made with nanotechnology and nanomaterials In Nanotechnology-Enhanced Food Packaging, a distinguished group of researchers delivers a comprehensive and insightful introduction to the application of nanomaterials in food packaging. This edited volume covers recent innovations—as well as future perspectives—in the industry and offers a complete overview of different types of nanomaterials used in food packaging. The book also discusses the use of nanoparticles in the development of active and functional food packaging and the related environmental and toxicological aspects. Featuring one-of-a-kind contributions from leaders in the field, Nanotechnology-Enhanced Food Packaging provides real-world solutions to food packaging challenges and considers the legislative and economic implications of new technologies. Among the new developments in nanotechnology-enhanced food packaging covered by the book are: Thorough introduction to biopolymers in food packaging systems and nanostructures based on starch, their preparation, processing, and applications in packaging Comprehensive explorations of chitosan-based nanoparticles and their applications in the food industry Practical discussions of active packaging systems based on metal oxide nanoparticles and an overview of higher barrier packaging using nano-additives In-depth examinations of the characterization techniques for nanostructures in food packaging Perfect for materials scientists, food technologists, and polymer chemists, Nanotechnology-Enhanced Food Packaging also belongs on the bookshelves of plastics technologists and allied professionals in the food industry.




Eco-Friendly Technology for Postharvest Produce Quality


Book Description

Eco-Friendly Technology for Postharvest Produce Quality presents the scope of emerging eco-friendly technologies to maintain the postharvest quality of fresh produce in terms of safety and nutrition. The book covers an analysis of the alternative and traditional methodologies pointing out the significant advantage and limitations of each technique. It provides a standard reference work for the fresh produce industry in postharvest management to extend shelf life by ensuring safety first and then nutritional or sensory quality retention. Fruits and vegetables are a huge portion of the food supply chain and are depended on globally for good health and nutrition. The supply of good food, however, greatly depends on good postharvest handling practices. Although substantial research has been carried out to preserve the quality of fresh horticultural produce, further research—especially on safety—is still required. This book provides foundational insights into current practices yielding best results for produce handling. - Includes appropriate approaches, technologies, and control parameters necessary to achieve shelf-life extension without compromising produce quality - Presents successful food safety methods between the time produce is harvested to consumption - Includes the latest information on preservation technologies using novel chemical methods, active packaging, and monitoring the effect of environmental stresses on quality and shelf life of agricultural produce




Mycotoxins in Fruits and Vegetables


Book Description

Mycotoxins are toxins produced by aerobic, microscopic fungus under special conditions of moisture and temperature. They colonize in a variety of foods from harvest to the grocer. Mycotoxins have gained world wide interest in recent years with the revelation of the effect of these toxins on health. A current example is the presence of ochratoxin A, a human carcinogen and nephrotoxin, in wines. The increased concern about fruit safety has led to increased studies throughout the world and enhanced awareness for stringent regulations governing mycotoxin limits in food.Presented in three defined sections, this is the first book to provide comprehensive analysis of the main mycotoxins contaminating fruits and vegetables and their derived products. The first section provides a safety evaluation of mycotoxins in fruits and vegetables, details regarding factors affecting mycotoxin production and diffusion in the fruit tissue, and recent methods for detection of mycotoxigenic fungi and mycotoxins produced by the fungi. The second part takes a critical look at the main individual mycotoxins and the third section focuses on approaches for prevention and control. - The first book dedicated to mycotoxins in fruits and vegetables - Presents mycological, mycotoxicological and phytopathological aspects of fruits and vegetables - Includes an analysis of detection, prevention and control methods for mycotoxigenic fungi and the mycotoxins they produce - Provides a complete risk assessment and safety evaluation of mycotoxins in perishable produce




Chitosan-Based Hydrogels


Book Description

Due to their unique properties, chitosan-based materials have emerged as useful resources in a variety of medicines, drug controlled-release carriers, tissue engineering scaffolds, and immobilized enzymes. But many of these materials have yet to reach the commercial market. Therefore, more work must be completed to fill the gap between research and




Role of Chitosan and Chitosan-Based Nanomaterials in Plant Sciences


Book Description

Role of Chitosan and Chitosan-Based Nanomaterials in Plant Sciences explores the physiological, morphological, biochemical and molecular regulation of chitosan and chitosan-based nanoparticles in plants in normal conditions, as well as during different stresses, and their probable mechanism of operation in the tolerance mechanism. The book stimulates further research in the field of chitosan and will foster further interests for researchers, academicians and scientists worldwide. Nanotechnology is being used widely in all disciplines of science and technology, including plant sciences. Chitosan has widely been reported as a beneficial organic compound for the growth and developments of plants and it plays a protective role for the plants against abiotic and biotic stresses. Yet there are very few books available that deal exclusively with Chitosan and Chitosan based nanoparticles impacts on plants respectively. - Analyzes the research on chitosan and chitosan-based nanomaterials in plant sciences - Includes the latest information on toxicity and human exposure - Reviews modifications and alterations in plant expressions and biochemical pathways




Advances in Postharvest Pathology of Fruits and Vegetables


Book Description

Fruits and vegetables are an important part of a healthy diet. However, one third of fruit and vegetables are lost after harvest every year. Most losses are caused by pathogen (mostly fungi) infections, which lead to postharvest decay. In addition, some postharvest fungal pathogens can produce toxic secondary metabolites (i.e. mycotoxins) during their infecting periods. Mycotoxin contamination may cause serious food safety issues. At present, the use of synthetic fungicides is still the main means to control postharvest diseases. However, the development of resistance in fungal pathogens to fungicides and the growing public concern over the health and environmental risks associated with high levels of pesticides in fruits and vegetables have urged researchers to develop alternative methods of disease control. A deeper understanding of the infecting mechanisms of postharvest pathogens will provide great insight into developing new controlling strategies.




Nanobiotechnology Applications in Plant Protection


Book Description

Nanotechnology can target specific agricultural problems related to plant pathology and provide new techniques for crop disease control. Plant breeders and phytopathologists are needed who can apply nanogenomics and develop nanodiagnostic technologies to accurately advance the improvement process and take advantage of the potential of genomics. This book serves as a thorough guide for researchers working with nanotechnology to address plant protection problems. Novel nanobiotechnology methods describe new plant gene transfer tools that improve crop resistance against plant diseases and increase food security. Also, quantum dots (QDs) have emerged as essential tools for fast and accurate detection of particular biological markers. Biosensors, QDs, nanostructured platforms, nanoimaging, and nanopore DNA sequencing tools have the potential to raise sensitivity, specificity, and speed in pathogen detection, thereby facilitating high-throughput analysis and providing high-quality monitoring and crop protection. Also, this book deals with the application of nanotechnology for quicker, more cost-effective, and precise diagnostic procedures of plant diseases and mycotoxins. Applications of nanotechnology in plant pests and disease control, antimicrobial mechanisms, pesticides remediation and nanotoxicity on plant ecosystem and soil microbial communities are discussed in detail. Moreover, the application of specific nanomaterials including silver, copper, carbon- or polymer-based nanomaterials and nanoemulsions are also discussed. Crops treated with safe nanofertilizers and nanopesticides will gain added value because they are free of chemical residues, decay and putative pathogens for human health, sustaining the global demand for high product quality.




Synthetic Pesticide Use in Africa


Book Description

A UN report presented to the UN Human Rights Council in 2017 recognized that, “although pesticide use has been correlated with a rise in food production, it has had catastrophic impacts" on human health and the environment. The report acknowledged that “increased food production has not succeeded in eliminating hunger worldwide because of the many interacting factors involved. Reliance on hazardous pesticides is a short-term solution that undermines the rights to adequate food and health for present and future generations." It is hoped that the knowledge available in Synthetic Pesticide Use in Africa: Impact on People, Animals, and the Environment will both enlighten the reader to present serious concerns on the use of synthetic pesticides, and motivate society to make the changes necessary for the sustainable production of safe, nutritious, and affordable food for the anticipated 9.6 billion inhabitants of this Earth in 2050. Key Features: • Explains the relationship of synthetic pesticides to escalating noncommunicable human and animal diseases in Africa and developing countries. • Discusses the impact of the herbicide glyphosate on the health of humans, animals, and the environment. • Reviews the disease causing mode of action of glyphosate and other synthetic pesticides on nutrient density and human and animal bodies. • Warns of the special vulnerability of children to synthetic pesticide toxicity. • Recommends needed legal initiatives to use synthetic pesticides more judiciously. The book is divided into seven (7) sections: I. General Impact, explains the general impact of synthetic pesticides on the African people, their animals, and environment. II. Human Health, covers the impact of synthetic pesticides on the human body, while III, Children’s Health, focuses on the special vulnerability of children to synthetic pesticides. IV. Animal Health describes the synthetic pesticide threats to animal production and sustainability. V. Environmental Health presents the threat of synthetic pesticides to soil microbiota and sustainable remediations. VI. Control Strategies discusses biologically-based alternatives to synthetic pesticides. Finally, VII. Reglatory Control presents some legal initiatives to combat the misuse of synthetic pesticides.




MXene Nanocomposites


Book Description

MXenes offer single step processing, excellent electrical conductivity, easy heat dissipation behavior, and capacitor-like properties and are used in photodetectors, lithium-ion batteries, solar cells, photocatalysis, electrochemiluminescence sensors, and supercapacitors. Because of their superior electrical and thermal conductivities, these composites are an ideal choice in electromagnetic interference (EMI) shielding. MXene Nanocomposites: Design, Fabrication, and Shielding Applications presents a comprehensive overview of these emerging materials, including their underlying chemistry, fabrication strategies, and cutting-edge applications in EMI shielding. • Covers modern fabrication technologies, processing, properties, nanostructure formation, and mechanisms of reinforcement. • Discuss biocompatibility, suitability, and toxic effects. • Details innovations, applications, opportunities, and future directions in EMI shielding applications. This book is aimed at researchers and advanced students in materials science and engineering and is unique in its detailed coverage of MXene-based polymer composites for EMI shielding.