International Journal of Nanoparticles (7 papers in press)
Types of nanomaterials in the food packaging: A review
by Kambiz Sadeghi, Mohammad Shahedi, Mohammadali Najafi, Amireh Sadeghi, Mohsen Shirani
Abstract: The advent of nanotechnology has provided remarkable methods for fabricating advanced materials. As such, packaging nanocomposite as one of the research hotspots in the nano-sized science, tends to extend shelf life of fresh food items. Active and intelligent packaging are two great achievements of nanotechnology in which organic and inorganic nanoparticles have showed great effects on the packaging matrix. In particular, nanosensor as an emerging technology can convert data from food items into intelligible signals to communicate with consumers. The objectives of this study are aligned with investigation of various nanostructures commonly used in the packaging industry, and providing an overview of their effects on the packaging performance. This review also elaborates human and environmental safety concerns regarding the application of nanoparticles, and identifies the legislation that has been recently launched.
Keywords: Nanomaterials; food packaging; Nanosensors; Safety concerns.
Synthesis And Characterization Of Zinc Oxide Nanoparticles And Its Antimicrobial Activity Against Staphylococcus Aureus And Micrococcus
by Gagandeep Kaur, Sonica Sondhi, Palki Sahib Kaur, Anjoo Kamboj, Shalini Verma
Abstract: A detailed analysis of synthesis and characterization of Zinc oxide(ZnO) nanoparticles (NPs) with a motive of demonstrating the effect of of ZnO on its antibacterial effect is reported herein. A rapid synthesis method of highly dispersed zinc oxide nanoparticles by using zinc acetate dihydrate and ammonium carbonate as a precursor and Polyethylene glycol (PEG) as a capping agent is presented in this study. The results of characterization techniques like ultraviolet visible (UV-Vis) spectroscopy, zeta potential and particle size analyzer confirmed ZnO NPs of better quality and of uniform sized. Further, the ZnO NPs revealed promising inhibitory activity against the growth of Staphylococcus aureus and Micrococcus.
Keywords: Synthesis; Nanoparticles; Zinc oxide; Microbial activity,Spectroscopy; zeta potential; particle size analyzer; S. aureus; Micrococcus; Characterization; Zone of Inhibition.
OPTIMIZATION OF PCL-HA LADEN BIODEGRADABLE NANOPARTICLES CONTAINING CYCLOSPORINE-A FOR THE TREATMENT OF DRY EYE SYNDROME: IN VITRO-IN VIVO EVALUATION
by Ishrat Chhowala, ASHABEN SHANKARBHAI PATEL, Rakesh Patel, Vashishth Bhavsar, Abhay Dharamsi
Abstract: The purpose of the present study is to develop hyaluronic acid-laden biodegradable nanoparticles containing cyclosporine-A and sustained the release for ophthalmic delivery. The nanoparticles were prepared by solvent diffusion technique followed lyophilisation. Optimization of product variables for nanoparticles were done by Central Composite Design (CCD) with particle size and entrapment efficiency as chosen responses The developed formulation consisting 1.18% Polycaprolactone and 0.16% hyaluronic acid showed 376.6 nm, -0.438
Keywords: Dry Eye Syndrome; Cyclosporine-A; Hyaluronic acid; Biodegradable nanoparticles; Lyophillization; in vivo pharmacokinetic study.
Quantum dot solar cell: an emerging nanomaterial-based device in the solar Industry
by Sweta Sharma, Soaib Khan, Yogesh Kumar, Rajeev Ranjan
Abstract: The worldwide energy is on the cusp of monstrous alter, driven by an unquenchable request and an increasing mindfulness of the constrained supply and corrupting environment of fossil fuels. More intensive research has been conducted around the world to get different economical energy arrangements. Quantum dot manufactured sun powered cell is the innovation for long run which can give required efficiency to run the solar industry facing with various challenges underneath silicon photovoltaic cell. Quantum dot cells are most flexible frame of renewable vitality since of its unique properties for producing power, warming as well as desalinating water. QDs have bandgaps which are flexible over a wide range of energy levels by changing the dot size. Semiconductor QDs, due to their quantum-based properties, give a modern pathway for controlling energy stream. In this manner, they have the tremendous potential to upgrade the efficiency of solar photovoltaic cells. In this mini review paper, we have collectively summarized the advancements of Quantum dot solar cell. We are foreseeing that this review will certainly help the researchers for more serious examination of investigations of the nanomaterial in various innovative ranges.rnrn
Keywords: Quantum dot solar cells; semiconductor nanoparticle; QD; Photovoltaic cell; bandgap.
Biosynthesis of Copper Nanoparticles from Plant extract and Bacteria - A Review
by Ravindra Sharma
Abstract: Copper and its salt have been used for a long time as it is non-toxic, cheaper, antibacterial/antifungal agent, and has high potential in a wide range of catalytic, biological, and sensor application. There has been a great development of various methods for the synthesis of copper nanoparticles, but there have been several limitations in copper nanoparticle synthesis by chemical and physical methods. Thus the interest has been shifted towards the green synthesis of copper nanoparticles which is cheaper, easy, quick, and environment friendly. As there are very few reviews available on the biosynthesis of copper nanoparticles of which most reviews are focused on either application or biosynthesis, not both. Thus, this review provides an overview of recent studies on green synthesis of copper nanoparticles by using plants, bacteria, fungi, and the advantages of using plants over bacteria and fungi for copper nanoparticle synthesis. This review also focuses on the characterization methods of copper nanoparticles and some applications of copper nanoparticles. From this review, it can be concluded that further research on improving the large-scale production and downstream processing technique needs to be done.
Keywords: Copper nanoparticles; Biosynthesis; Characterization; Wound healing; Antimicrobial; Anticancer.
Preparation of Porous Core Shell Copper Zinc Oxide Nanospheres for Lysozyme Delivery
by Yusilawati Ahmad Nor, Farahanim Johari, Anand Kumar Meka, Hao Song, Dzun Noraini Jimat, Nur Ayuni Jamal
Abstract: Metal oxide nanoparticles such as copper oxide (CuO) and zinc oxide (ZnO) have been widely used in various applications including drug delivery. Recently, there has been great progresses in the development of these metal oxide nanoparticles as carrier for the delivery of antimicrobial biomolecules such as lysozyme. However, very limited amount of biomolecules can be loaded on solid metal oxide nanoparticles along with complex conjugation procedures. Hence, this challenge inspires the development of metal oxide nanocomposites with improved structure to achieve high loading of lysozyme. In this project, copper zinc oxide (CuZnO) nanospheres with porous and core shell structure was prepared by the hard templating method. The core shell nanostructure was obtained at 320 ? where the APF polymer template has been completely decomposed. The nanospheres are having the size of 414 nm, total pore volume of 0.08 cm3/g and range of pore size between 12 nm to 30 nm. The CuZnO can effectively load lysozyme up to 64% by adsorption method. These findings provided new insight on the use of porous metal oxide nanocomposite as an efficient antimicrobial enzyme carrier.
Keywords: Copper zinc oxide; nanocomposites; core shell; porous; nanostructure; lysozyme; carrier.
Antioxidant and antibacterial activity of biogenic Zirconium Oxide Nanoparticles from Candida orthopsilosis DSB1 isolated from backwaters of Sunderbans, West Bengal
by Anwesha Sarkar, Debayan Ghosh, Soupam Das, Bhaskara Rao Kokati Venkata
Abstract: The current investigation showcases the biogenesis of zirconium oxide nanoparticles by marine yeast, isolated from backwaters of Sundarbans, India. A total of 21 marine yeast isolates were isolated and screened for biosynthesis of zirconium oxide nanoparticles. The potential marine yeasts DSB1 and DSB2 were initially identified by microscopic and biochemical analysis. After spectrophotometric analysis, the ZrO2 nanoparticle DSB1NP was characterised using AFM, FT-IR, SEM and XRD analysis. SEM and AFM analysis suggested that the size of the ZrO2NP DSB1NP was 38 nm and they were spherical in shape. Biogenic DSB1NP showed better metal chelating activity (57%), DPPH scavenging activity (63.8%), and reducing power activity (61.3%) than DSB2NP. DSB1NP has also showed good antibacterial activity against Staphylococcus aureus (22
Keywords: Marine yeast; zirconium oxide nanoparticle; antibacterial activity; antioxidant activity; AFM; SEM; FTIR; XRD.