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Osmotic Pressure Simulations of Amino Acids and Peptides Highlight Potential Routes to Protein Force Field Parameterization

21-Apr-2016 | Mark S. Miller; Wesley K. Lay; Adrian H. Elcock, Journal of Physical Chemistry B, 2016

Recent molecular dynamics (MD) simulations of proteins have suggested that common force fields overestimate the strength of amino acid interactions in aqueous solution. In an attempt to determine the causes of these effects, we have measured the osmotic coefficients of a number of amino acids ...

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Effect of Polyelectrolyte Stiffness and Solution pH on the Nanostructure of Complexes Formed by Cationic Amphiphiles and Negatively Charged Polyelectrolytes

18-Apr-2016 | Maor Ram-On; Yachin Cohen; Yeshayahu Talmon, Journal of Physical Chemistry B, 2016

The interaction between amphiphiles and polyelectrolytes has been widely investigated in recent years due to their potential application in industry and medicine, with special focus on gene therapy. The cationic lipid dioleoyl trimethylammonium propane, DOTAP, and the oppositely charged ...

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New Perspectives for the Encapsulation of Hydrophilic Compounds

16-Apr-2016 | Rasim Alper Oral, Journal of Food Processing and Preservation, 2016

Abstract Encapsulation of a hydrophilic extract was performed with complex coacervation and immobilization into the gel matrix to compare the encapsulation efficiency. Sodium alginate and gelatin suspensions containing different ratios of maltodextrin were selected as the wall material for ...

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Flavonoid glycosides from Persea caerulea. Unraveling their interactions with SDS‐micelles through matrix‐assisted DOSY, PGSE, mass spectrometry, and NOESY

14-Apr-2016 | Juan M. Álvarez, Álvaro Raya‐Barón, Pedro M. Nieto, Luis E. Cuca, Alegría Carracso‐Pancorbo, Alberto Fernández‐Gutié ..., Magnetic Resonance in Chemistry, 2016

Abstract Two flavonoid glycosides derived from rhamnopyranoside (1) and arabinofuranoside (2) have been isolated from leaves of Persea caerulea for the first time. The structures of 1 and 2 have been established by 1H NMR, 13C NMR, and IR spectroscopy, together with LC–ESI–TOF and LC–ESI–IT MS ...

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In-situ pore-forming alginate hydrogel beads loaded with in-situ formed nano-silver and their catalytic activity

13-Apr-2016 | Qin Wang; Shanshan Liu; Hong Wang; Yajiang Yang, Physical Chemistry Chemical Physics, 2016

An aqueous mixture of sodium carbonate (Na2CO3) and sodium alginate (Na-ALG) was dropwise added into an aqueous solution of Ca(NO3)2, leading to the formation of calcium alginate (Ca-ALG) hydrogel beads. Meanwhile Na2CO3 as a pore-forming precursor was transformed in-situ to CaCO3 nanoparticles ...

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Enhancement of Lateral Diffusion in Catanionic Vesicles during Multilamellar-to-Unilamellar Transition

11-Apr-2016 | S. Mitra; V. K. Sharma; V. Garcia-Sakai; A. Orecchini; T. Seydel; M. Johnson; R. Mukhopadhyay, Journal of Physical Chemistry B, 2016

Catanionic vesicles are formed spontaneously by mixing cationic and anionic dispersions in aqueous solution in suitable conditions. Because of spontaneity in formation, long-term stability, and easy modulation of size and charge, they have numerous advantages over conventional lipid-based ...

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Electrochemical deposition of Na-doped p-type Cu2O film on n-type Si for photovoltaic application

10-Apr-2016 | Author(s): Nezar G. Elfadill, M.R. Hashim, Khaled M. Chahrour, S.A. Mohammed, Journal of Electroanalytical Chemistry, 2016

Publication date: 15 April 2016 Source:Journal of Electroanalytical Chemistry, Volume 767 Author(s): Nezar G. Elfadill, M.R. Hashim, Khaled M. Chahrour, S.A. Mohammed Sodium doped p-type Cu2O film deposited by electrochemical method was achieved by adding sodium alumina complex ...

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Concentration-dependent conformational changes in GQ-forming ODNs

09-Apr-2016 | Author(s): Yang Yun Li, Rashid Abu-Ghazalah, Bita Zamiri, Robert B. Macgregor, Biophysical Chemistry, 2016

Publication date: April 2016 Source:Biophysical Chemistry, Volume 211 Author(s): Yang Yun Li, Rashid Abu-Ghazalah, Bita Zamiri, Robert B. Macgregor Guanine-rich oligodeoxyribonucleotides (ODNs) can form non-canonical DNA structures known as G-quadruplexes, which are four stranded ...

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Antimicrobial Activity of Nisin and Natamycin Incorporated Sodium Caseinate Extrusion‐Blown Films: A Comparative Study with Heat‐Pressed/Solution Cast Films

07-Apr-2016 | Basak Yilin Colak, Pierre Peynichou, Sophie Galland, Nadia Oulahal, Frédéric Prochazka, Pascal Degraeve, Journal of Food Science, 2016

Abstract Antimicrobial edible films based on sodium caseinate, glycerol, and 2 food preservatives (nisin or natamycin) were prepared by classical thermomechanical processes. Food preservatives were compounded (at 65 °C for 2.5 min) with sodium caseinate in a twin‐screw extruder. Anti‐Listeria ...

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Synthesis, Crystal Structure, and Properties of the Alluaudite-Type Vanadates Ag2–xNaxMn2Fe(VO4)3

07-Apr-2016 | Hamdi Ben Yahia; Masahiro Shikano; Mitsuharu Tabuchi; Ilias Belharouak, Inorganic Chemistry, 2016

The new members of the Ag2–xNaxMn2Fe(VO4)3 (0 ≤ x ≤ 2) solid solution were synthesized by a solid-state reaction route, and their crystal structures were determined from single-crystal X-ray diffraction data. The physical properties were characterized by Mössbauer and electrochemical impedance ...

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