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338 Newest Publications about the topic freeze-drying
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Hyaluronidase Inhibiting Activity and Radical Scavenging Potential of Flavonols in Processed Onion
08-05-2013 | Diana González-Peña; Clara Colina-Coca; Cielo D. Char; M. Pilar Cano; Begoña de Ancos; Concepción Sánchez-Moreno, Journal of Agricultural and Food Chemistry, 2013
The flavonol content and anti-inflammatory and antioxidant activities of onion treated by high-pressure processing (HPP) and HPP combined with freeze-drying and pulverization (HPP-FD-P) were evaluated. Allium cepa L. var. cepa, ‘Recas’ was treated at T1 (200 MPa/25 °C/5 min), T2 (400 MPa/25 ...
α-Glucosidase Inhibiton and Antiglycation Activity of Laccase-Catalyzed Catechin Polymers
07-05-2013 | So-Youn Jeon; Sejong Oh; Eungseok Kim; Jee-Young Imm, Journal of Agricultural and Food Chemistry, 2013
Catechin polymers were produced by laccase (12 U/mL) in a mixture of sodium acetate buffer (1% (+)-catechin, 100 mM, pH 5) and methanol (buffer:methanol = 95:5, v/v). The freeze-dried catechin polymers were recovered from the precipitate after dialysis followed by centrifugation. Catechin ...
Ceramic aerogels from TEMPO-oxidized cellulose nanofibre templates. Synthesis, characterization, and photocatalytic properties
29-04-2013 | Author(s): Lucio Melone , Lina Altomare , Ilaria Alfieri , Andrea Lorenzi , Luigi De Nardo , Carlo Punta, Journal of Photochemistry and Photobiology A: Chemistry, 2013
Publication date: Available online 27 April 2013Source:Journal of Photochemistry and Photobiology A: Chemistry Author(s): Lucio Melone , Lina Altomare , Ilaria Alfieri , Andrea Lorenzi , Luigi De Nardo , Carlo Punta Aerogels are highly porous materials whose interesting ...
Antioxidant and Enzyme Inhibitory Activities of Blueberry Anthocyanins Prepared Using Different Solvents
29-04-2013 | Floirendo P. Flores; Rakesh K. Singh; William L. Kerr; Ronald B. Pegg; Fanbin Kong, Journal of Agricultural and Food Chemistry, 2013
We compared the biological activities of anthocyanins prepared from whole blueberries or pomace and extracted with acetone, ethanol, and methanol. Crude Amberlite extracts (CAE) and rehydrated powders of freeze-dried anthocyanins were used. Ethanolic CAE yielded the highest total monomeric ...
Investigation of Radiation-Induced Free Radicals and Luminescence Properties in Fresh Pomegranate Fruits
18-04-2013 | Hafiz M. Shahbaz; Kashif Akram; Jae-Jun Ahn; Joong-Ho Kwon, Journal of Agricultural and Food Chemistry, 2013
Radiation-induced free radicals and luminescence properties were investigated in γ-irradiated (0–3 kGy) pomegranate (Punica granatum L.) fruits. Photostimulated luminescence (PSL) analysis showed limited applicability, and only 3 kGy-irradiated pomegranates showed positive PSL values (>5000 ...
Correlation between Internal Structure and Electrochemical Impedance Spectroscopy of Multiphase Slurry Systems
26-03-2013 | Seoung Jai Bai; Young Seok Song, Analytical Chemistry, 2013
Slurry for lithium-ion batteries is prepared from an active material, a carbon conductive additive, and a polymeric binder in a solvent, and its morphological change is evaluated over time using electrochemical impedance spectroscopy. A schematic model of the internal structure and dispersion ...
Effect of Time and Storage Temperature on Anthocyanin Decay and Antioxidant Activity in Wild Blueberry (Vaccinium angustifolium) Powder
14-03-2013 | Daniela Fracassetti; Cristian Del Bo’; Paolo Simonetti; Claudio Gardana; Dorothy Klimis-Zacas; Salvatore Ciappellano, Journal of Agricultural and Food Chemistry, 2013
This study evaluated the effects of storage on total and single anthocyanin (ACN) content, and total antioxidant activity (TAA) of freeze-dried wild blueberry (WB) powder maintained at 25, 42, 60, and 80 °C for 49 days. Storage reduced single and total ACN content at all of the temperatures; ...
A Supramolecular Janus Hyperbranched Polymer and Its Photoresponsive Self-Assembly of Vesicles with Narrow Size Distribution
13-03-2013 | Yong Liu; Chunyang Yu; Haibao Jin; Binbin Jiang; Xinyuan Zhu; Yongfeng Zhou; Zhongyuan Lu; Deyue Yan, Journal of the American Chemical Society, 2013
Herein, we report a novel Janus particle and supramolecular block copolymer consisting of two chemically distinct hyperbranched polymers, which is coined as Janus hyperbranched polymer. It is constructed by the noncovalent coupling between a hydrophobic hyperbranched ...
Freeze-Drying Yields Stable and Pure Amorphous Calcium Carbonate (ACC)
05-03-2013 | Johannes Ihli; Alexander N Kulak; Fiona Meldrum, Chemical Communication, 2013
A simple synthetic method is presented for the precipitation of high purity, dry amorphous calcium carbonate (ACC) based on freeze-drying saturated, counter ion free CaCO3 solutions, where the ACC produced shows an extended atmospheric stability. Translation of the methodology to amorphous ...
Controlling the Distribution of Supported Nanoparticles by Aqueous Synthesis
05-03-2013 | Tamara M. Eggenhuisen; Heiner Friedrich; Fabio Nudelman; Jovana Zečević; Nico A. J. M. Sommerdijk; Petra E. de Jongh ..., Chemistry of Materials, 2013
Synthesis of supported nanoparticles with controlled size and uniform distribution is a major challenge in nanoscience, in particular for applications in catalysis. Cryo-electron tomography revealed with nanometer resolution the 3D distribution of phases present during nanoparticle synthesis ...
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