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Waterborne Polyurethanes for Packing Industries
Published in Ram K. Gupta, Ajay Kumar Mishra, Eco-Friendly Waterborne Polyurethanes, 2022
Saima Zulfiqar, Rida Badar, Muhammad Yar
Silver nanoparticles (Ag NPs) embedded WPU reduce the number of bacteria and augment mechanical attributes, such as tensile strength, Young's modulus, etc. A little quantity of silver nanoparticles is effective, but a higher amount causes toxicity to humans and animals. However, Ag-WPUs are widely used in the pharmaceutical and packing industries. On the other hand, gold (Au) nanoparticles also have antibacterial potential, but these require peculiar conditions.
Environmental, Health, and Safety Issues of Liquid and Crystal Nanomaterials
Published in Uma Shanker, Manviri Rani, Liquid and Crystal Nanomaterials for Water Pollutants Remediation, 2022
Manviri Rani, Keshu, Uma Shanker
Antiviral, antimicrobial, and antibacterial properties of silver nanoparticles make it significant for the treatment of trophic sores, acne, chronic ulcers, open wounds, and bums (Beyene et al. 2017). It has been highly used in shampoos, soaps, detergents, toothpaste, and air sanitizer sprays as well as for storage and packaging of foodstuff (Ahmed et al. 2016). Other than this, many researchers have confirmed the noncyto-toxicity of PVPs and ammonia stabilized silver nanoparticles at a minimum concentration. However, silver nanoparticles can cause in vitro toxicity, impairment of cell tissues, and DNA damage. Many acute and chronic diseases have been caused by silver nanoparticles that affect endothelial and microvascular cells (Gupta and Xie 2018).
Recent Advances in Materials Science and Engineering Contributing to the Infection Diseases
Published in Peerawatt Nunthavarawong, Sanjay Mavinkere Rangappa, Suchart Siengchin, Mathew Thoppil-Mathew, Antimicrobial and Antiviral Materials, 2022
Sabarish Radoor, Aswathy Jayakumar, Jasila Karayil, Jyothi Mannekote Shivanna, Jyotishkumar Parameswaranpillai, Suchart Siengchin
Silver nanoparticles have a strong biocidal and inflammatory effect and, therefore, have been widely explored in wound dressing, cosmetics, food packaging, etc. [35-37]. Researchers have employed chemical, physical and biological routes for the synthesis of silver nanoparticles. Compared with the chemical method, reports show that both physical and biological methods require advanced and expensive equipment. Therefore, people focus on a chemical route that is simple and less costly for the synthesis of silver nanoparticle. Owing to its eco-friendly methodology and inexpensive procedure, recently increasing attention is being given to the green synthesis of silver nanoparticles [38—40].
Synthesis, characterization and antimicrobial activity of novel silver nanoparticles functionalized with nitrogenous ligands
Published in Inorganic and Nano-Metal Chemistry, 2023
B. Varun Kumar, K. Hussain Reddy
Ionic silver is highly toxic to most bacterial cells and has long been used as a potent bactericidal agent.[16] However, several silver-resistant bacterial strains have been reported and even shown to accumulate silver nanoparticles in their periplasmic space.[17–19] Silver nanoparticles are used as antibacterial agents because of their high reactivity that is due to the large surface-to-volume ratio. Antibacterial activity of the silver-containing materials can be used, for example, in medicine to reduce infections as well as to prevent bacteria colonization on prostheses,[20] catheters,[21,22] vascular grafts,[23] dental materials,[24] stainless steel materials, and human skin.[25,26]
Toxicity assessment of silver nanoparticles synthesized using endophytic fungi against nosacomial infection
Published in Inorganic and Nano-Metal Chemistry, 2021
Ranjani S., Shariq Ahmed M., MubarakAli D., Ramachandran C., Senthil Kumar N., Hemalatha S.
Nanotechnology is an important field of science which focuses on the synthesis of nanomaterials in nanoscale range and biotechnology is a branch of biology which involves the living organisms such as bacteria, fungi, algae etc., to make advancements in the benefit of mankind. Hence, bionanotechnology is a combined field which involves multidisciplinary technologies to overcome the drawbacks which already exist.[1] Of all the metallic nanoparticles, silver nanoparticles are being focused highly by researchers due to their effective antimicrobial properties. The physical, chemical, biological properties of nanoparticles play an important role on its antimicrobial activity. The synthesis of silver nanoparticles can be achieved using different methods such as physical, chemical and biological methods. Biological methods use plant extracts and living organisms (bacteria, fungi, algae) for the synthesis of silver nanoparticles.[2,3] The biological method has lot of advantages compared to the chemical synthesis methods because it is inexpensive, environment friendly, does not require any large mechanical instruments and can be easily scaled up for industrial perspective which will meet the demand in various sectors including agricultural, healthcare, biomedical, and many more. The mechanism involved in the synthesis of silver nanoparticles is the reduction of silver ions with the help of a reducing and stabilizing agent. In the biological synthesis, the enzymes, proteins, secondary metabolites present in the living organisms help for the bioreduction.[4,5]
Estimation of silver nanoparticles effect on the reproductive health of female Wistar rats
Published in Egyptian Journal of Basic and Applied Sciences, 2022
Yara Mohamed, Abdel-Wahab El Ghareeb, Fawzy Ali Attaby, Heba Ali Abd El-Rahman
One of these contaminants is Nanoparticles (NPs) which are generally defined as particulate matter with at least one dimension of less than 100 nm. They have unique thermal, mechanical, magnetic, and optical capabilities, allowing them to be used in various biomedical and industrial applications, which would elevate the risk of human exposure to NPS One of the most popular nanoparticles is silver nanoparticles. AgNPs are important because of their unique properties, which can be included in antimicrobial applications, biosensor materials, cosmetic products, and many other fields [3–5]. Silver nanoparticles have also been added to medical products, including wound dressings, contraceptives, surgical instruments, bone prostheses, and cardiac catheters [6].