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Sensors, Vol. 14, Pages 21535-21548: Magnetic Bead-Based Colorimetric Immunoassay for Aflatoxin B1 Using Gold Nanoparticles

14-11-2014 | Wang, Xu ; Niessner, Reinhard ; Knopp, Dietmar, Sensors, 2014

A competitive colorimetric immunoassay for the detection of aflatoxin B1 (AFB) has been established using biofunctionalized magnetic beads (MBs) and gold nanoparticles (GNPs). Aflatoxin B1-bovine serum albumin conjugates (AFB-BSA) modified MBs were employed as capture probe, which could ...


Molecules, Vol. 19, Pages 18705-18720: Removing Tannins from Medicinal Plant Extracts Using an Alkaline Ethanol Precipitation Process: A Case Study of Danshen Injection

14-11-2014 | Gong, Xingchu ; Li, Yao ; Qu, Haibin, Molecules, 2014

The alkaline ethanol precipitation process is investigated as an example of a technique for the removal of tannins extracted from Salviae miltiorrhizae Radix et Rhizoma for the manufacture of Danshen injection. More than 90% of the tannins can be removed. However, the recoveries of danshensu, ...


Evaluation of the combination of a dispersive liquid‐liquid microextraction method with micellar electrokinetic chromatography coupled to mass‐spectrometry for the determination of estrogenic compounds in milk and yogurt

13-11-2014 | Giovanni D'Orazio, María Asensio‐Ramos, Javier Hernández‐Borges, Miguel Ángel Rodríguez‐Delgado, Salvatore Fanali, ELECTROPHORESIS, 2014

In this work, the suitability of a methodology based on dispersive liquid‐liquid microextraction (DLLME) has been evaluated for the extraction of four endoestrogens (estriol, 17α‐estradiol, 17β‐estradiol and estrone), an exoestrogen (17α‐etynylestradiol) and a mycotoxin (zearalenone), together ...


Anomalous Diffusion in Thermoresponsive Polymer–Clay Composite Hydrogels Probed by Wide-Field Fluorescence Microscopy

13-11-2014 | Beate Stempfle; Anna Große; Bernhard Ferse; Karl-Friedrich Arndt; Dominik Wöll, Langmuir, 2014

Thermoresponsive materials exhibit an enormous potential for tissue engineering, separation systems, and drug delivery. We investigated the diffusion of laponite clay nanoparticles, which serve as physical cross-linkers to achieve improved material properties in poly(N-isopropylacrylamide) ...


Redox and Photochemistry of Bis(terpyridine)ruthenium(II) Amino Acids and Their Amide Conjugates – from Understanding to Applications (Eur. J. Inorg. Chem. 32/2014)

11-11-2014 | Aaron Breivogel, Christoph Kreitner, Katja Heinze, European Journal of Inorganic Chemistry, 2014

The cover picture shows push‐pull‐substituted bis(terpyridine)ruthenium(II) amino acid [Ru(4′‐tpy‐COOH)(4′‐tpy‐NH2)]2+ (tpy = 2,2′;6′,2″‐terpyridine) and its interaction with light, as well as with electron donors and electron acceptors, in the front. This multifunctional complex is ...


Multiple patterns of polymer gels in microspheres due to the interplay among phase separation, wetting, and gelation [Applied Physical Sciences]

11-11-2014 | Miho Yanagisawa; Shinpei Nigorikawa; Takahiro Sakaue; Kei Fujiwara; Masayuki Tokita, Proceedings of the National Academy of Sciences current issue, 2014

We report the spontaneous patterning of polymer microgels by confining a polymer blend within microspheres. A poly(ethylene glycol) (PEG) and gelatin solution was confined inside water-in-oil (W/O) microdroplets coated with a layer of zwitterionic lipids: dioleoylphosphatidylethanolamine (PE) and ...


A new cation‐modified Al‐polyacrylamide flocculant for solid–liquid separation in waste drilling fluid

08-11-2014 | Yongming Zhang, Zongcheng Miao, Jing Zou, Journal of Applied Polymer Science, 2014

ABSTRACT A new cation‐modified Al‐polyacrylamide (CAPAM) flocculant was prepared by the in situ polymerization of acrylamide (AM) and (2‐methacryloyloxyethyl) trimethyl ammonium chloride (DMC) with Al(OH)3 sol. The optimum preparation conditions were obtained by a one‐factor experimental ...


Determination of human albumin in serum and urine samples by constant‐energy synchronous fluorescence method

07-11-2014 | Tayyebeh Madrakian, Habibollah Bagheri, Abbas Afkhami, Luminescence, 2014

ABSTRACT A sensitive spectrofluorimetric method using constant‐energy synchronous fluorescence technique is proposed for the determination of human albumin without separation. In this method, no reagent was used for enhancement of the fluorescence signal of albumin in the solution. Effects of ...


Magnetic hydroxyapatite nanoparticles: An efficient adsorbent for the separation and removal of nitrate and nitrite ions from environmental samples

06-11-2014 | Ensieh Ghasemi, Mika Sillanpää, Journal of Separation Science, 2014

A novel type of magnetic nanosorbent, hydroxyapatite‐coated Fe2O3 nanoparticles, was synthesized and used for the adsorption and removal of nitrite and nitrate ions from environmental samples. The properties of synthesized magnetic nanoparticles were characterized by scanning electron ...


Preparation and Characterization of Superparamagnetic Molecularly Imprinted Polymers for Selective Adsorption and Separation of Vanillin in Food Samples

06-11-2014 | Fangjian Ning; Hailong Peng; Liling Dong; Zhong Zhang; Jinhua Li; Lingxin Chen; Hua Xiong, Journal of Agricultural and Food Chemistry, 2014

Novel water-compatible superparamagnetic molecularly imprinted polymers (M-MIPs) were prepared by coating superparamagnetic Fe3O4 nanoparticles with MIPs in a methanol–water reaction system. The M-MIPs were used for the selective adsorption and separation of vanillin from aqueous solution. The ...


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