scholarly journals Green synthesis of gold nanoparticles using plant extracts as reducing agents

2014 ◽  
pp. 4007 ◽  
Author(s):  
Yehuda Zeiri ◽  
Paz Elia ◽  
Raya Zach ◽  
Sharon Hazan ◽  
Sofiya Kolusheva ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Green Synthesis ◽  
Plant Extracts ◽  
Reducing Agents

scholarly journals Concentration Effect of Reducing Agents on Green Synthesis of Gold Nanoparticles: Size, Morphology, and Growth Mechanism

2016 ◽  
Vol 11 (1) ◽  
Author(s):  
Hyun-seok Kim ◽  
Yu Seon Seo ◽  
Kyeounghak Kim ◽  
Jeong Woo Han ◽  
Youmie Park ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Green Synthesis ◽  
Growth Mechanism ◽  
Reducing Agents ◽  
Concentration Effect

scholarly journals Green Synthesis of Gold Nanoparticles with Self-Sustained Natural Rubber Membranes

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Flávio C. Cabrera ◽  
Haider Mohan ◽  
Renivaldo J. dos Santos ◽  
Deuber L. S. Agostini ◽  
Ricardo F. Aroca ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Green Chemistry ◽  
Natural Rubber ◽  
Green Synthesis ◽  
Hevea Brasiliensis ◽  
Flexible Substrate ◽  
Metallic Nanostructures ◽  
Reducing Agents ◽  
Reducing Agent ◽  
Slow Kinetics

Green chemistry is an innovative way to approach the synthesis of metallic nanostructures employing eco-friendly substances (natural compounds) acting as reducing agents. Usually, slow kinetics are expected due to, use of microbiological materials. In this report we study composites of natural rubber (NR) membranes fabricated using latex fromHevea brasiliensistrees (RRIM 600) that works as reducing agent for the synthesis of gold nanoparticles. A straight and clean method is presented, to produce gold nanoparticles (AuNP) in a flexible substrate or in solution, without the use of chemical reducing reagents, and at the same time providing good size’s homogeneity, reproducibility, and stability of the composites.

scholarly journals Green Synthesis of Gold Nanoparticles Using Plant Extracts as Beneficial Prospect for Cancer Theranostics

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6389
Author(s):  
Kaushik Kumar Bharadwaj ◽  
Bijuli Rabha ◽  
Siddhartha Pati ◽  
Tanmay Sarkar ◽  
Bhabesh Kumar Choudhury ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Green Synthesis ◽  
Plant Extracts ◽  
Large Scale ◽  
Cost Effective ◽  
Synthesis Methods ◽  
Characterization Methods ◽  
Cancer Theranostics ◽  
Physical And Chemical

Gold nanoparticles (AuNPs) have been widely explored and are well-known for their medical applications. Chemical and physical synthesis methods are a way to make AuNPs. In any case, the hunt for other more ecologically friendly and cost-effective large-scale technologies, such as environmentally friendly biological processes known as green synthesis, has been gaining interest by worldwide researchers. The international focus on green nanotechnology research has resulted in various nanomaterials being used in environmentally and physiologically acceptable applications. Several advantages over conventional physical and chemical synthesis (simple, one-step approach to synthesize, cost-effectiveness, energy efficiency, and biocompatibility) have drawn scientists’ attention to exploring the green synthesis of AuNPs by exploiting plants’ secondary metabolites. Biogenic approaches, mainly the plant-based synthesis of metal nanoparticles, have been chosen as the ideal strategy due to their environmental and in vivo safety, as well as their ease of synthesis. In this review, we reviewed the use of green synthesized AuNPs in the treatment of cancer by utilizing phytochemicals found in plant extracts. This article reviews plant-based methods for producing AuNPs, characterization methods of synthesized AuNPs, and discusses their physiochemical properties. This study also discusses recent breakthroughs and achievements in using green synthesized AuNPs in cancer treatment and different mechanisms of action, such as reactive oxygen species (ROS), mediated mitochondrial dysfunction and caspase activation, leading to apoptosis, etc., for their anticancer and cytotoxic effects. Understanding the mechanisms underlying AuNPs therapeutic efficacy will aid in developing personalized medicines and treatments for cancer as a potential cancer therapeutic strategy.

Eco-Friendly Methods of Gold Nanoparticles Synthesis

2019 ◽  
Vol 9 (3) ◽  
pp. 311-328
Author(s):  
Heba M. Fahmy ◽  
Amena S. El-Feky ◽  
Taiseer M. Abd El-Daim ◽  
Merna M. Abd El-Hameed ◽  
Donia A. Gomaa ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Green Synthesis ◽  
Plant Extracts ◽  
Metallic Nanoparticles ◽  
Synthesis Methods ◽  
Capping Agents ◽  
Synthesis Of Nanoparticles ◽  
Clinical Applicability ◽  
Magnolia Kobus

Background: Owing to the importance of metallic nanoparticles, different researches and studies have been induced to synthesize them in many ways. One of the ways that paid attention last years is the green synthesis methods of nanoparticles or the so-called ''eco-friendly methods''. The most common sources that has been used for green synthesis of nanoparticles are plants, leaves, fungi and microorganisms. The green synthesis methods are widely used because they are inexpensive, usable, and nontoxic. Moreover, plant extracts are rich in reducing and capping agents. Methods: In the present review, green synthesis methods of gold nanoparticles (AuNps) using Chitosan, Klebsiella pneumoniae, Magnolia Kobus, Elettaria cardamomum (Elaichi) aqueous extract and other agents as a reducing/capping agents will be discussed in details. Moreover, we will make a comparison between different green routes of synthesis and the characterization of the obtained nanoparticles from each route. Results: The characterization and applications of the prepared GNPs from different routes are reviewed. Conclusion: The utilization of gold nanoparticles has been advocated because of their high biocomptability, administration in clinical applicability and in diverse aspects of life. It seems that plants are good candidates for nanoparticles production because they are inexpensive, available and renewable sources in addition, it is too simple to prepare extracts from them. Moreover, the great diversity in the types and amounts of reducing agents from plant extracts is responsible for the effortless generation of metallic nanoparticles of various shapes and morphologies.

Review on Methodologies Used in the Synthesis of Metal Nanoparticles: Significance of Phytosynthesis Using Plant Extract as an Emerging Tool

2020 ◽  
Vol 26 (40) ◽  
pp. 5188-5204
Author(s):  
Uzair Nagra ◽  
Maryam Shabbir ◽  
Muhammad Zaman ◽  
Asif Mahmood ◽  
Kashif Barkat
Keyword(s):  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Plant Extracts ◽  
Biomedical Applications ◽  
Noble Metals ◽  
Cost Effective ◽  
Green Technology ◽  
Critical Parameters ◽  
Nanosized Particles ◽  
Preparation Methods

Nanosized particles, with a size of less than 100 nm, have a wide variety of applications in various fields of nanotechnology and biotechnology, especially in the pharmaceutical industry. Metal nanoparticles [MNPs] have been synthesized by different chemical and physical procedures. Still, the biological approach or green synthesis [phytosynthesis] is considered as a preferred method due to eco-friendliness, nontoxicity, and cost-effective production. Various plants and plant extracts have been used for the green synthesis of MNPs, including biofabrication of noble metals, metal oxides, and bimetallic combinations. Biomolecules and metabolites present in plant extracts cause the reduction of metal ions into nanosized particles by one-step preparation methods. MNPs have remarkable attractiveness in biomedical applications for their use as potential antioxidant, anticancer and antibacterial agents. The present review offers a comprehensive aspect of MNPs production via top-to-bottom and bottom-to-top approach with considerable emphasis on green technology and their possible biomedical applications. The critical parameters governing the MNPs formation by plant-based synthesis are also highlighted in this review.

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