Results 311 to 320 of about 186,939 (353)

Bioreduction mechanism of silver nanoparticles

Materials Science and Engineering: C, 2020
The studies represent in-depth investigations of bacteria mediated reduction mechanism of silver nanoparticles (Ag NPs) not reported so far. Ag NPs were successfully synthesized by Bacillus subtilis spizizenni (NCIM 2063), and their bioreduction mechanism has been explored in detail.
Shital Vishnu, Sable, Sonali, Kawade, Suvidya, Ranade, Satyawati, Joshi   +3 more
openaire   +2 more sources

Wool keratin-stabilized silver nanoparticles

Bioresource Technology, 2010
In this paper, we explored a facile method to prepare stable silver nanoparticles (Ag NPs) using extracted wool keratin as the capping agent. The formation of Ag NPs was investigated by UV-Vis spectroscopy, X-ray photo-electron spectrometer and X-ray diffraction spectrometer.
Xiaowen, Lü, Shuxun, Cui
openaire   +2 more sources

Silver nanoparticles induce silver nanoparticle-specific allergic responses (HYP6P.274)

The Journal of Immunology, 2014
Abstract Metals, such as Au, Ag, and Ni cause various types of allergic reactions. Several models have been proposed to explain the activation of metal-allergy, for example, analogous to typical haptens such as TNP, T cell recognize a complex of metal ions with MHC-embedded self-peptides. In general, metal-allergy means metal-ion allergy.
Toshiro Hirai, Yasuo Yoshioka, Ko-ichi Ichihashi, Takahide Mori, Nobuo Nishijima, Takayuki Handa, Hideki Takahashi, Shin-ichi Tsunoda, Kazuma Higashisaka, Yasuo Tsutsumi   +9 more
openaire   +1 more source

Silver Nanoparticles

Silver nanoparticles (AgNPs) have garnered attention as an effective solution for anti-microbial food packaging. Agri-food waste should be viewed as a source of valuable products, paving the way for a zero-waste economy. With special qualities that may greatly improve the quality and safety of packaged food items, this chapter examines the various ways
Sachi Dubey, Sharayu Lohakar, Sunil Jayant Kulkarni, Ajaygiri K. Goswami   +3 more
openaire   +1 more source

Microbial Synthesis of Silver Nanoparticles

Journal of Nanoscience and Nanotechnology, 2013
The objectives of this research were to study biogenic synthesis of Ag(0) nanoparticles and to determine the effects of various experimental conditions such as silver nitrate concentrations, pHs and temperatures controlling for the optimal biosynthesis of Ag(0) nanoparticles.
Yumi, Kim, Byeong-Gweon, Lee, Yul, Roh
openaire   +2 more sources

Thermoresponsive polymer-stabilized silver nanoparticles

Journal of Colloid and Interface Science, 2008
Silver nanoparticles (Ag NPs) stabilized by a thermoresponsive polymer, poly(N-isopropylacrylamide) (PNIPAM), have been synthesized by the reduction of silver ions with NaBH(4) in aqueous solutions. The obtained Ag NPs are very stable at room temperature due to the extended coil conformation of the PNIPAM chain at temperatures below its volume phase ...
Guo, L., Nie, J., Du, B., Peng, Z., Tesche, B., Kleinermanns, K.   +5 more
openaire   +3 more sources

Silver nanoparticles functionalized with ampicillin

ELECTROPHORESIS, 2017
AbstractThe resistance of pathogenic bacteria to antibiotics has become a serious problem. The emphasis is placed on the development of new, effective antimicrobial strategies. One of them is the use of AgNPs in association with antibiotic drugs. The aim of this study was to obtain silver nanoparticles functionalized with ampicillin and to investigate ...
Agnieszka Rogowska, Katarzyna Rafińska, Paweł Pomastowski, Justyna Walczak, Viorica Railean‐Plugaru, Magdalena Buszewska‐Forajta, Bogusław Buszewski   +6 more
openaire   +2 more sources

Antimicrobial effects of silver nanoparticles

Nanomedicine: Nanotechnology, Biology and Medicine, 2007
The antimicrobial effects of silver (Ag) ion or salts are well known, but the effects of Ag nanoparticles on microorganisms and antimicrobial mechanism have not been revealed clearly. Stable Ag nanoparticles were prepared and their shape and size distribution characterized by particle characterizer and transmission electron microscopic study.
Jun Sung, Kim, Eunye, Kuk, Kyeong Nam, Yu, Jong-Ho, Kim, Sung Jin, Park, Hu Jang, Lee, So Hyun, Kim, Young Kyung, Park, Yong Ho, Park, Cheol-Yong, Hwang, Yong-Kwon, Kim, Yoon-Sik, Lee, Dae Hong, Jeong, Myung-Haing, Cho   +13 more
openaire   +2 more sources

Antiangiogenic properties of silver nanoparticles

Biomaterials, 2009
Angiogenesis is an important phenomenon involved in normal growth and wound healing processes. An imbalance of the growth factors involved in this process, however, causes the acceleration of several diseases including malignant, ocular, and inflammatory diseases.
Sangiliyandi, Gurunathan, Kyung-Jin, Lee, Kalimuthu, Kalishwaralal, Sardarpasha, Sheikpranbabu, Ramanathan, Vaidyanathan, Soo Hyun, Eom   +5 more
openaire   +2 more sources

Toxicological effects of silver nanoparticles

Environmental Toxicology and Pharmacology, 2015
Nanotechnology offers numerous biomedical applications and in so doing, exerts toxic effects. AgNPs, one of the metallic nanoparticles is known for its antibacterial applications and hence exposed to human through various healthcare products. Analysis of its toxic effects is necessary before its appliance into the biomedical field.
Jacob Joe, Antony, Periyasamy, Sivalingam, Baoan, Chen   +2 more
openaire   +2 more sources