نتایج جستجو برای: agnps tragacanth

تعداد نتایج: 2031  

2018
Juan M Martinez-Andrade Miguel Avalos-Borja Alfredo R Vilchis-Nestor Luis O Sanchez-Vargas Ernestina Castro-Longoria

The chelating and antimicrobial capacity of a novel modification of 17% EDTA with silver nanoparticles (AgNPs) (EDTA-AgNPs) was evaluated in-vitro for root canal treatment (RCT). The EDTA-AgNPs solution was characterized by UV-Vis spectroscopy, ζ-potential and high-resolution transmission electron microscopy (HRTEM). Antimicrobial capacity was evaluated against Candida albicans and Staphylococc...

2012
Jaganathan Umashankari Dhinakarasamy Inbakandan Thipramalai T Ajithkumar Thangavel Balasubramanian

Background: Biosynthesis of nanoparticles has received increasing attention due to the growing need to develop safe, time-effective and environmentally friendly technologies for nano-materials synthesis. This paper reports the one pot green synthesis of silver nanoparticles (AgNPs) using the leaf bud extract of a mangrove plant, Rhizophora mucronata and their antimicrobial effects against aquat...

2014
Noa Alon Yana Miroshnikov Nina Perkas Ifat Nissan Aharon Gedanken Orit Shefi

Much effort has been devoted to the design of effective biomaterials for nerve regeneration. Here, we report the novel use of silver nanoparticles (AgNPs) as regenerative agents to promote neuronal growth. We grew neuroblastoma cells on surfaces coated with AgNPs and studied the effect on the development of the neurites during the initiation and the elongation growth phases. We find that the Ag...

2015
Adithan Aravinthan Muthusamy Govarthanan Kandasamy Selvam Loganathan Praburaman Thangasamy Selvankumar Rangachari Balamurugan Seralathan Kamala-Kannan Jong-Hoon Kim

A rapid, green phytosynthesis of silver nanoparticles (AgNPs) using the aqueous extract of Helianthus tuberosus (sunroot tuber) was reported in this study. The morphology of the AgNPs was determined by transmission electron microscopy (TEM). Scanning electron microscopy-energy-dispersive spectroscopy (SEM-EDS) and X-ray powder diffraction (XRD) analysis confirmed the presence of AgNPs. Fourier ...

2018
Anna Dzimitrowicz Agata Motyka Piotr Jamroz Ewa Lojkowska Weronika Babinska Dominik Terefinko Pawel Pohl Wojciech Sledz

Pectinolytic bacteria are responsible for significant economic losses by causing diseases on numerous plants. New methods are required to control and limit their spread. One possibility is the application of silver nanoparticles (AgNPs) that exhibit well-established antibacterial properties. Here, we synthesized AgNPs, stabilized by pectins (PEC) or sodium dodecyl sulphate (SDS), using a direct...

Journal: :Scientific reports 2016
Jae-Kyo Jeong Sangiliyandi Gurunathan Min-Hee Kang Jae Woong Han Joydeep Das Yun-Jung Choi Deug-Nam Kwon Ssang-Goo Cho Chankyu Park Han Geuk Seo Hyuk Song Jin-Hoi Kim

Solid tumors are frequently associated with resistance to chemotherapy because the fraction of hypoxic tumor cells is substantial. To understand the underlying mechanism of hypoxia on silver nanoparticle (AgNPs)-induced apoptosis, the expression of hypoxia-inducible factor (HIF)-1α, a hallmark of hypoxia, was measured in the presence and absence of AgNPs. The results showed that HIF-1α expressi...

2014
Martin Sivera Libor Kvitek Jana Soukupova Ales Panacek Robert Prucek Renata Vecerova Radek Zboril

The potential for application of any nanoparticles, including silver nanoparticles (AgNPs), is strongly dependent on their stability against aggregation. Therefore, improvement of this parameter is a key task, especially in the case of AgNPs, because a correlation between size and biological activity has been demonstrated. In the present work, a natural stabilizer, gelatin, was investigated for...

Journal: :Journal of environmental sciences 2015
Zhen Zhang Xiaoya Yang Mohai Shen Yongguang Yin Jingfu Liu

Due to the unique antibacterial activities, silver nanoparticles (AgNPs) have been extensively used in commercial products. Anthropogenic activities have released considerable AgNPs as well as highly toxic silver ion (Ag(+)) into the aquatic environment. Our recent study revealed that ubiquitous natural organic matter (NOM) could reduce Ag(+) to AgNP under natural sunlight. However, the toxic e...

2017
Maoling Wu Yinying Li Rui Yue Xiaodan Zhang Yuming Huang

The removal of silver nanoparticles (AgNPs) from water is highly needed because of their increasing use and potential risk to the environment due to their toxic effects. Catalysis over AgNPs has received significant attention because of their highly catalytic performance. However, their use in practical applications is limited due to high cost and limited resources. Here, we present for the fir...

2015
NEELU CHOUHAN RAJESH KUMAR MEENA

Bio-chemical reduction method was employed to synthesise the silver nanoparticles (Ag NPs) by aging the mixture of the aqueous extract of the Trachyspermum Ammi (TA, Ajwain) seeds and AgNO3 solution at different time interval. Reaction time of AgNO3 and TA could accelerate the reduction rate of Ag and affect AgNPs size and concentration of NPs. X-ray diffraction (XRD) studies confirms the forma...

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