Synthesis of silver nanoparticles from Mirabilis jalapa and evaluation of antioxidant activity PDF Download

Author: Rathi C.R
Publisher: Prem Jose
ISBN:
Category : Education
Languages : en
Pages :

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Book Description
Mirabilis jalapa is one of the medicinally important shrubs used in traditional medicine, belongs to the family Nyctaginaceae and commonly called as 4’O clock plant. M. jalapa plant extract contains biologically active substances that exhibit microbicidal or microstatic effects against various diseases causing microbes. The plant has high medicinal properties such that the indigenous people of Mexico use it to cure many infirmities including dysentery, diarrhoea, muscular pain and abdominal colic. It is used for the treatment of various infections. Parts of the plant are used to combat dyspepsia and other digestive disorders. The extract of yellow, red color flower variety and green leaf of M. jalapa can be used as natural food color instead of artificial color. The main advantage of using these plant extracts are they have high antimicrobial and have high antioxidant activity. It has the capacity to resist the bacteria like Bacillus, Salmonella, Klebsiella, E coli, Staphylococcus with the help of Silver nanoparticles. The plant has also proved to possess antibacterial, antiviral, and antioxidant activity. Nanoparticles are defined as particulate dispersions or solid particles with a size in the range of 10-1000nm. The drug is dissolved, entrapped, encapsulated or attached to a nanoparticle matrix. Depending upon the method of preparation, nanoparticles, nanospheres or nanocapsules can be obtained. Nanocapsules are systems in which the drug is confined to a cavity surrounded by a unique polymer membrane, while nanospheres are matrix systems in which the drug is physically and uniformly dispersed. Antioxidants are used as food additives to help guard against food deterioration. Exposure to oxygen and sunlight are the two main factors in the oxidation of food, so food is preserved by keeping in the dark and sealing it in containers or even coating it in wax, as with cucumbers. However, as oxygen is also important for plant respiration, storing plant materials in anaerobic conditions produces unpleasant flavours and unappealing colors. Consequently, packaging of fresh fruits and vegetables contains an ~8% oxygen atmosphere.

Author: Bindu Thomas Mary Panthenal
Publisher: Independent Author
ISBN: 9781805307587
Category : Medical
Languages : en
Pages : 0

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Book Description
The biogenic synthesis of silver nanoparticles using plant extracts is a promising area of research in the field of nanotechnology. Plant extracts, such as aqueous and methanolic extracts, have been found to be effective in synthesizing silver nanoparticles in a green and sustainable manner. The synthesis process is simple, cost-effective and does not involve the use of toxic chemicals. The synthesized silver nanoparticles have been characterized for their biological and photocatalytic efficacy. The nanoparticles have potential applications in biomedical and environmental fields, such as antimicrobial activity, antioxidant activity, bioremediation and biopharmaceuticals. The biogenic synthesis of silver nanoparticles from plant extracts offers a way to reduce the environmental impact of traditional chemical synthesis methods. Medicinal plants and herbal extracts have been used as reducing agents in the synthesis process. Phytochemicals present in the plant extracts play an important role in the reduction of metal ions, resulting in the formation of nanoparticles. Surface functionalization of the nanoparticles can be achieved by using plant extracts, which provides biocompatibility and stability. Characterization techniques such as transmission electron microscopy, scanning electron microscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, ultraviolet-visible spectroscopy, zeta potential, particle size and aggregation have been employed to study the properties of the synthesized nanoparticles. Cytotoxicity studies have also been conducted to assess the safety of the nanoparticles for use in biomedical applications. The biogenic synthesis of silver nanoparticles from plant extracts offers a green and sustainable alternative to traditional chemical synthesis methods. Plant-based therapy and plant-derived nanoparticles are emerging as potential therapeutic agents in the field of medicine. The use of herbal medicine and green technology in nanoparticle synthesis is an area of research that is gaining interest due to its potential for sustainable development.

Author: Richard L. K. Glover
Publisher: CRC Press
ISBN: 100035119X
Category : Science
Languages : en
Pages : 240

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Book Description
Green synthesis is an emerging method for deriving nanoparticles present in natural plants for use in nanomedicine. Written by experts in the field, Green Synthesis in Nanomedicine and Human Health showcases the exciting developments of this specialty and its potential for promoting human health and well-being. This book gives practical information on novel preparation methods for identifying nanoparticles present in natural plants. It discusses applications of nanoparticles in combating communicable, non-communicable and vector-borne diseases. It also explores the potential for nanoparticles to combat antimicrobial resistance through improvements in treatment methods, diagnostics and drug delivery systems. Features scientific evidence of opportunities for integrating indigenous flora into nanomedicine to develop cost-effective therapeutic and diagnostic solutions for diseases, including cancer, tuberculosis, malaria and diabetes. Places green synthesis and nanomedicine in the African orthodox and traditional healthcare context. Provides policymakers with scientific evidence to inform policies for controlling or mitigating dangerous diseases. This book is essential reading for students, scientists, policymakers and practitioners of nanotechnology, and will appeal to anyone with an interest in integrating traditional African healthcare and Western medicine.

Author: Amandeep Kaur
Publisher: GRIN Verlag
ISBN: 3656946388
Category : Science
Languages : en
Pages : 92

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Book Description
Bachelor Thesis from the year 2013 in the subject Biology - Miscellaneous, grade: M.Sc., , course: Biotechnology, language: English, abstract: Research and analysis of nanoparticles (NPs) synthesis and their biological activities has been expanded significantly in the recent years. The agents used for nanoparticles (NPs) synthesis are of organic (mainly carbon) and inorganic (metal ions like silver and gold) origin (Singh et al., 2010). Among these, silver (Ag) is the most preferred NPs synthesis agent due to its reported use in medical field as best topical bactericides from ancient times (Lavanya et al., 2013). The stable silver nanoparticles had been synthesized by using soluble starch as both the reducing and stabilizing agents (Shrivastava et al., 2012). So the concern of scientific community shifted towards ecofriendly, natural and cheaper method of NPs synthesis by using microorganisms and plant extracts (Mohanpuria et al., 2008). The use of plant materials for silver nanoparticles (AgNPs) is most popular due to its potential biological activities, easy availability and faster rate of synthesis there by cutting the cost of NP's synthesis (Huang et al., 2007 and Salam et al., 2012). The nanoparticles had been clinically used for infection, vaccines and renal diseases (Malhotra et al., 2010). The plant extract of petals of herbal species like Punica granatum, Datura metel (Chandran et al., 2011) and stem extracts of Svensonia hyderobadensis (Linga et al., 2011) had been effectively used for AgNPs synthesis and investigated for their antimicrobial activities. Nanoparticles could be synthesized by various approaches like photochemical reactions in reverse micelles (Taleb et al., 1997), thermal decomposition (Esumi et al., 1990), sonochemical (Zhu et al., 2000) and microwave assisted process (Santosh et al., 2002 and Prasher et al., 2009). Nanocrystalline silver particles have found tremendous applications in the field of high sensitivity biomolecular detection and diagnostics (Schultz et al., 2000), antimicrobials and therapeutics (Rai and Yadav., 2009 and Elechiguerra et al., 2005) and micro-electronics (Gittins et al., 2000). Acacia auriculiformis A. Cunn. is an exotic species that can survive in degraded lands in Thai savanna (Badejo et al., 1998). Besides its high adaptability in degraded savanna areas, A. auriculiformis is known for its nitrogen fixation property (Sprent and Parsons, 2000) enriching macrofaunal composition (Mboukou-Kimbatsa et al., 1998), low allelopathic effects (Bernhard-Reversat et al., 1999) and ability to pump nutrients from the subsoil (Kang et al., 1993).

Author: Azamal Husen
Publisher: Springer
ISBN: 3030055698
Category : Science
Languages : en
Pages : 605

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Book Description
This book discusses the latest developments in plant-mediated fabrication of metal and metal-oxide nanoparticles, and their characterization by using a variety of modern techniques. It explores in detail the application of nanoparticles in drug delivery, cancer treatment, catalysis, and as antimicrobial agent, antioxidant and the promoter of plant production and protection. Application of these nanoparticles in plant systems has started only recently and information is still scanty about their possible effects on plant growth and development. Accumulation and translocation of nanoparticles in plants, and the consequent growth response and stress modulation are not well understood. Plants exposed to these particles exhibit both positive and negative effects, depending on the concentration, size, and shape of the nanoparticles. The impact on plant growth and yield is often positive at lower concentrations and negative at higher ones. Exposure to some nanoparticles may improve the free-radical scavenging potential and antioxidant enzymatic activities in plants and alter the micro-RNAs expression that regulate the different morphological, physiological and metabolic processes in plant system, leading to improved plant growth and yields. The nanoparticles also carry out genetic reforms by efficient transfer of DNA or complete plastid genome into the respective plant genome due to their miniscule size and improved site-specific penetration. Moreover, controlled application of nanomaterials in the form of nanofertilizer offers a more synchronized nutrient fluidity with the uptake by the plant exposed, ensuring an increased nutrient availability. This book addresses these issues and many more. It covers fabrication of different/specific nanomaterials and their wide-range application in agriculture sector, encompassing the controlled release of nutrients, nutrient-use efficiency, genetic exchange, production of secondary metabolites, defense mechanisms, and the growth and productivity of plants exposed to different manufactured nanomaterials. The role of nanofertilizers and nano-biosensors for improving plant production and protection and the possible toxicities caused by certain nanomaterials, the aspects that are little explored by now, have also been generously elucidated.

Author: Durgesh Kumar Tripathi
Publisher: Academic Press
ISBN: 0128116463
Category : Science
Languages : en
Pages : 552

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Book Description
Nanomaterials in Plants, Algae and Microorganisms: Concepts and Controversies: Volume One discusses the vast amount of nanomaterials that have been released into the environment in a relatively short amount of time. There is a need to understand what the implications to the health of our biota and ecosystems are as the earth is increasingly inundated with these materials. Not all of the effects are negative, but their impacts are increasing exponentially due to their size, quantity and other factors. Covers the issues of nanoparticles on more simple organisms and their ecosystems Presents issues that are specific to terrestrial ecosystems Contains contributions from global experts who help increase understanding at the physiological, biochemical, molecular, and even genomic and proteomic levels Provides a critical assessment of the progress taking place on this topic and sheds light on future research needs

Author: Junaid Ahmad Malik
Publisher: Springer Nature
ISBN: 3031311043
Category : Technology & Engineering
Languages : en
Pages : 479

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Book Description
This two-volume set provides a comprehensive overview of modern nanoscience, and encompasses advanced techniques of nanocomposite materials that make their way from the laboratory to the field for the revival of energy and environmental systems in a sustainable manner. It includes the design and the sophisticated fabrication of nanomaterials along with their potential energy and environmental applications, while looking at how nanoscience and nanotechnology can be used to promote environmentally friendly processes and strategies. The books' purpose is to promote eco-friendly methods and techniques by covering many elements of both the synthesis and uses of nanoparticles and nanofluids for energy and environmental engineering. They provide an up-to-date synthesis of nanocomposite materials for modern nanotechnology applications in the fields of environment protection, heterogeneous catalysis, wastewater treatment, fuel cells, electrochemical energy conversion, and storage applications. The set is designed for environmental scientists, nanotechnologists, chemists, engineers, and individuals seeking current research on nanotechnology and its applications in environmental engineering. Graduate students working in these fields will also find it a valuable resource. Volume 2 focuses on toxicological assessment, negative impacts of nanomaterials, green synthesis, energy conversion, and storage applications.

Author: Kamel A. Abd-Elsalam
Publisher: Elsevier
ISBN: 0128245093
Category : Technology & Engineering
Languages : en
Pages : 798

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Book Description
Green Synthesis of Silver Nanomaterials illustrates how to biologically scale up silver nanoparticle synthesis. This book covers green synthesis of silver nanomaterials, via plants, agricultural waste, fungi, and microorganisms. Sections cover the synthesis and characterization of chemical and green synthesis, various types of silver nanomaterialism, the ability of different fungal species, such as filamentous fungi, to produce silver nanoparticles, the microbial synthesis of silver NMs, biosynthesis mechanisms, toxicity, fate and commercialization. As examples, greener pathways and mechanisms, toxicity of silver nanoparticles in aquatic life and in natural eco-systems, and strategies for the scaling up of green-synthesized nanomaterials are discussed. With the extended work in enhancing nanomaterials synthesis performance, and discovering their biomedical, environmental, and agricultural applications, it is hoped that the execution of these methods on a large scale and their industrial applications in different fields will take place in the near future. Assesses the impact of a large variety of silver-based nanostructures in the biomedical, environmental and agri-food sectors Discusses the major synthesis methods used for effectively processing plant-based silver nanoparticles Outlines the potential and major challenges for adopting green synthesis methods on a mass scale

Author: Muthupandian Saravanan
Publisher: Elsevier
ISBN: 0323998100
Category : Technology & Engineering
Languages : en
Pages : 790

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Book Description
Emerging Nanomaterials and Nano-based Drug Delivery Approaches to Combat Antimicrobial Resistance focuses on recent and emerging trends surrounding nanomaterials and nano-drug delivery approaches to combat antimicrobial resistance. The relationship between nanomaterials and antimicrobial activity needs to be deeply explored to meet the challenges of combating antimicrobial resistance. The content of this book is divided into three main topic areas, including (i) how to overcome the existing traditional approaches to combat antimicrobial resistance, (ii) applying multiple drug delivery mechanisms to target multi-drug resistant microbes, and (iii) how nanomaterials can be used as drug carriers. This is an important reference source for those looking to understand how nanotechnology plays an important role in combatting disease and infection. As antimicrobial resistance threatens the effective prevention and treatment of an ever-increasing range of infections caused by bacteria, parasites, viruses, and fungi, this is a timely resource. Outlines how to overcome existing traditional approaches to combatting antimicrobial resistance Explains how to apply multiple drug delivery mechanisms (MDR) to the target area in order to better combat antimicrobial resistance Shows how nanomaterials are used as drug carriers in this context

Author: Aditya Kumar
Publisher: Elsevier
ISBN: 0323992927
Category : Technology & Engineering
Languages : en
Pages : 640

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Book Description
Antiviral and Antimicrobial Smart Coatings: Fundamentals and Applications provides a critical analysis of all types of smart antiviral and antimicrobial coatings currently being researched. The book opens with a discussion of the microbial and viral pathogens, including how to identify them and their interaction with surfaces. The next three sections look at the concept of smart coatings, specifically antibacterial, antifungal, and antiviral smart coatings, types, effects, and applications. The book concludes by discussing the methods and standards for characterization of coatings and then presents several real world case studies. A valuable resource for those working in the smart coatings field. Introduces the concepts of smart coatings and the synthesis, characterization, and classification Provides insights into the pros and cons of established processes and thereby provides guidance on how to select the appropriate techniques for specific applications Discusses the process of applying smart antimicrobial and antiviral coatings on various surfaces Presents the methods for characterization of smart and multifunctional coatings