Colloids and Interface Science Communications This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Garlic essential oil nanophytosomes as a natural food preservative: Its application in yogurt as food model
In this study, encapsulation of garlic essential oil (GEO) in nanophytosomes as a novel phytoconstituents delivery system was performed via three different methods. The physicochemical characterization of nanophytosomes were studied by dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) and also antioxidant activity, physical stability and antibacterial effects against food-borne pathogens i.e. Escherichia coli and Staphylococcus aureus were investigated. Optimized GEO nanophytosomes showed promising results with the size of 115 nm, loading capacity of 40...
Source: Colloids and Interface Science Communications - March 17, 2019 Category: Nanotechnology Source Type: research

How to make microscale pores on a self-assembled Ag nanoparticle monolayer
Publication date: May 2019Source: Colloid and Interface Science Communications, Volume 30Author(s): Haruka Takekuma, Kyohei Tagomori, Shuhei Shinohara, Shihomi Masuda, Yang Xu, Yinthai Chan, Pangpang Wang, Sou Ryuzaki, Koichi Okamoto, Kaoru TamadaAbstractIn this short communication, we report a procedure for the fabrication of microscale pores on a rigid self-assembled Ag nanoparticle monolayer with nanothickness. Here, condensed water droplets on a hydrophobic substrate are used as a pore formation template for Langmuir-Schaefer film deposition. The optical properties of the Ag nanoparticle monolayer were influenced by th...
Source: Colloids and Interface Science Communications - March 14, 2019 Category: Nanotechnology Source Type: research

Experimental and theoretical study of the mechanism formation of silver nanoclusters in the reduction reaction of Ag+ ions by alizarin solution
Publication date: March 2019Source: Colloid and Interface Science Communications, Volume 29Author(s): Valentina A. Litvin, Boris F. Minaev, Gleb V. BaryshnikovAbstractFor the study of the processes of the Ag+ ions interaction with humic substances a low molecular weight model compound – alizarin – was used for the first time in the present work. It has been established that alizarin carries out a double role in the process of synthesis of silver nanoparticles: reducing agent of Ag+ ions and a stabilizer of the formed nanoparticles. Based on the analysis of experimental data a mechanism of silver nanoparticles formation...
Source: Colloids and Interface Science Communications - February 28, 2019 Category: Nanotechnology Source Type: research

Corrosion behavior of two low alloy steel in simulative deep-sea environment coupling to titanium alloy
Publication date: March 2019Source: Colloid and Interface Science Communications, Volume 29Author(s): Weijie Fan, Yong Zhang, Huiwen Tian, Wei Wang, Weihua LiAbstractCorrosion behavior of two different low alloy steels (specimen 1, specimen 2) coupling to titanium (Ti) alloy was studied in simulative deep-sea environment with 500 m depths. Immersion tests revealed that the corrosion rate of specimen 1 was higher than that of specimen 2. The micro morphology showed all specimens of specimen 1 steel was susceptible to both intergranular and pitting corrosion. Electrochemical results imply that the galvanic current of speci...
Source: Colloids and Interface Science Communications - February 22, 2019 Category: Nanotechnology Source Type: research

Unveiling the Synergistic Effect of ZnO Nanoparticles and Surfactant Colloids for Enhanced Oil Recovery
Publication date: March 2019Source: Colloid and Interface Science Communications, Volume 29Author(s): Marwan Y. Rezk, Nageh K. AllamAbstractAlthough chemical flooding is widely used to enhance oil productivity at lower cost, the continuously increasing prices of chemicals is a real barrier to achieve such an aim. Hence, various ways have been explored to reduce the amount of chemicals used while yielding the same performance or even higher to make the whole process cost efficient. Herein, we investigate the use of zinc oxide nanoparticles (ZnO NPs) to improve the surfactant-based extraction of an organic fluid (n- dodecane...
Source: Colloids and Interface Science Communications - January 26, 2019 Category: Nanotechnology Source Type: research

Ultrasound-Assisted Synthesis and Characterization of Heparin-Coated Eu3+ Doped Hydroxyapatite Luminescent Nanoparticles
Publication date: March 2019Source: Colloid and Interface Science Communications, Volume 29Author(s): Qingguo Xing, Xiaojun Zhang, Dulan Wu, Yingchao Han, M. Nirmali Wickramaratne, Honglian Dai, Xinyu WangAbstractHerein, the heparin-coated Eu3+ doped hydroxyapatite luminescent nanoparticles were synthesized by an ultrasound-assisted coprecipitation method followed with steam sterilization at 121 °C. The effects of ultrasound treatment, steam sterilization, sodium heparin (SH) concentration and Eu doping content on the formation of heparin-coated Eu3+ doped hydroxyapatite nanoparticles (SH-Eu:nHAP) were investigated. The...
Source: Colloids and Interface Science Communications - January 17, 2019 Category: Nanotechnology Source Type: research

Design and In Vitro Evaluation of Atovaquone Nanosuspension Prepared by pH Based and Anti-solvent Based Precipitation Method
Publication date: March 2019Source: Colloid and Interface Science Communications, Volume 29Author(s): Harsha Kathpalia, Siddhesh Juvekar, Supriya ShidhayeAbstractThe aim of the research was to design a novel pH based precipitation method for formulation of atovaquone nanosuspension. The study compares efficiency of two bottom-up methods namely, pH and anti-solvent based precipitation to reduce particle size of atovaquone. The anti-solvent precipitation method uses tetrahydrofuran as the solvent with poloxamer and povidone as stabilizers. The pH based precipitation method includes sodium hydroxide as basifying agent in comb...
Source: Colloids and Interface Science Communications - January 17, 2019 Category: Nanotechnology Source Type: research

Efficacy of Biogenic Selenium Nanoparticles from an Extract of Ginger towards Evaluation on Anti-Microbial and Anti-Oxidant Activities
Publication date: March 2019Source: Colloid and Interface Science Communications, Volume 29Author(s): Soumya Menon, Shrudhi Devi K.S., Happy Agarwal, Venkat Kumar ShanmugamAbstractBiogenic method of synthesis of nanoparticles is being preferred over the conventional chemical and physical methods due to its reduced toxicity towards the environment which uses living organisms like plants, microalgae and other microorganisms. The biomolecules present help in the reduction of Sodium Selenite to its elemental form Selenium nanoparticles. Z. officinale was used for the synthesis of selenium nanoparticles which was confirmed by t...
Source: Colloids and Interface Science Communications - January 10, 2019 Category: Nanotechnology Source Type: research

Shape dependent catalytic activity of unsupported gold nanostructures for the fast reduction of 4-nitroaniline
Publication date: March 2019Source: Colloid and Interface Science Communications, Volume 29Author(s): S.G. Jiji, K.G. GopchandranAbstractA one step seed mediated strategy is adopted here for synthesizing spherical, dog bone and rod shaped gold nanoparticles. Usually noble metals decorated by supporting materials are used for chemical catalysis. Here, a variety of unsupported gold nanoparticles (spherical, dog bone and rod shaped) originating from the same growth procedure are used for the catalytic reduction of para-nitroaniline (4-NA). The product obtained, para-phenylenediamine, is an important material, especially in th...
Source: Colloids and Interface Science Communications - January 10, 2019 Category: Nanotechnology Source Type: research

Inverse-Micelle Synthesis of Doxorubicin-Loaded Alginate/Chitosan Nanoparticles and In Vitro Assessment of Breast Cancer Cytotoxicity
Publication date: January 2019Source: Colloid and Interface Science Communications, Volume 28Author(s): Justin G. Rosch, Hayden Winter, Allison N. DuRoss, Gaurav Sahay, Conroy SunAbstractNaturally-derived polysaccharides, such as alginate and chitosan, can be assembled to form nanocarriers for the delivery of therapeutic agents. Here we exploit the electrostatic complexation of alginate/chitosan in a water-in-oil (w/o) emulsion process to produce doxorubicin (DOX)-loaded nanoparticles (~80 nm) with exceptional spherical morphology and uniformity. This robust synthetic route utilizes an aqueous phase dispersed in a cycloh...
Source: Colloids and Interface Science Communications - December 27, 2018 Category: Nanotechnology Source Type: research

Bactericidal effect of graphene oxide and reduced graphene oxide: Influence of shape of bacteria
Publication date: January 2019Source: Colloid and Interface Science Communications, Volume 28Author(s): Iman Sengupta, Proma Bhattacharya, Monikangkana Talukdar, Sudarsan Neogi, Surjya K. Pal, Sudipto ChakrabortyAbstractThe emergence of multi-drug resistant bacteria due to the misuse of antibiotics and inadequate development of antibiotic drugs is a global threat to human health. Recent development in materials research caused the emergence of nanomaterials with promising bactericidal properties. Carbon based nanomaterials like graphene and graphene oxide(GO) have appealed researchers for antimicrobial properties, although...
Source: Colloids and Interface Science Communications - December 22, 2018 Category: Nanotechnology Source Type: research

Failure of Particle-Laden Interfaces Studied Using The Funnel Method
Publication date: January 2019Source: Colloid and Interface Science Communications, Volume 28Author(s): Brian L. Kim, Abigail Rendos, Prithika Ganesh, Keith A. BrownAbstractWe develop a method to explore the mechanical response of particles on a liquid-air interface under biaxial tension. Particles were laser cut with designed 2D geometries that interact in a predictable manner through capillary effects. When such particles were arranged into a raft on the water-air interface in a funnel, raising the water level induced deformation and ultimately failure of the raft. While particles that strongly attract one another can be...
Source: Colloids and Interface Science Communications - December 6, 2018 Category: Nanotechnology Source Type: research

Real-Time Interaction of Mixed Species Biofilm With Silver Nanoparticles Using QCM-D
This study presents a novel approach to probe in situ, real-time changes in mixed-species biofilms via quartz crystal microbalance with dissipation (QCM-D). The viscoelasticity of a model wastewater biofilm was monitored by QCM-D, and quantitative changes in both measured frequency, ∆f, and dissipation, ∆D, reflected biofilm structural changes in the presence of silver nanoparticles (Ag-NPs). Complimentary results from confocal laser scanning microscopy confirmed biofilm attachment and the presence of live cells. A step-input experiment with increasing concentrations of Ag-NPs (127, 666, 1160, 1632 ppb) was performed...
Source: Colloids and Interface Science Communications - November 30, 2018 Category: Nanotechnology Source Type: research

Chloramphenicol Loaded Microemulsions: Development, Characterization and Stability
This study aimed to formulate and characterize microemulsions containing chloramphenicol. Microemulsions represent highly biocompatible drug delivery systems due to their potential for increased absorption as well as high solubilization capacity. MEs were composed of Oleic acid, non-ionic surfactants tween 20/60, 1-propanol and phosphate buffer. The optimum weight ratios of components and MEs areas were determined by pseudo-ternary phase diagram. All formulations were physically characterized by centrifugation, pH, refractive index, conductivity, viscosity, surface tension and partition coefficient. The specific residence ...
Source: Colloids and Interface Science Communications - November 28, 2018 Category: Nanotechnology Source Type: research

Immobilization of Anti-Inflammatory Drug on Exfoliated α-Zirconium Phosphate as a pH-Responsive Carrier
In this study, the preparation and characterization of a hybrid material of a biologically active drug and α-zirconium phosphate (α-ZrP) were investigated with the aim toward developing a novel drug delivery system. Thus, bromfenac sodium (BFS) as an anti-inflammatory drug was immobilized on α-ZrP hydrogel prepared from the exfoliation of α-ZrP using propylamine. The amount of BFS immobilized on the α-ZrP hydrogel was 6.9 wt%. The release behavior of BFS from the α-ZrP hydrogel was investigated under pH conditions of 2.0, 4.0 and 7.0. An increase in the amount of BFS released could be observed with increasing pH, w...
Source: Colloids and Interface Science Communications - November 23, 2018 Category: Nanotechnology Source Type: research