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Journal of Food Processing and Preservation

Influence of different cold storage times on quality of “Cuiguan” pear fruits during shelf life

Published: 22 October 2019

Author(s): Chaonan Kan, Yang Gao, Chunpeng Wan, Ming Chen, Xianyang Zhao, Shanjun Liu, Jinyin Chen

Abstract This study investigates the effects of different cold storage times (30 days—CS‐30d, 40 days—CS‐40d, and 50 days—CS‐50d) on quality of “Cuiguan” pear fruits during shelf life. The data showed that, compared with 0 days of cold storage, the weight loss and rot rate of the fruit on the shelf increased, the hardness and nutritional quality of the fruit decreased rapidly, and the deterioration rate of the fruit was aggravated. By comparing the quality changes of three storage periods...

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Journal of Food Science

Assessment of the techno‐functionality, starch digestion rates and protein quality of rice flour–whey protein instant powders produced in a twin extruder

Published: 22 October 2019

Author(s): Erick Heredia‐Olea, Maria Dolores Contreras‐Alvarado, Esther Perez‐Carrillo, Julian De la Rosa‐Millán, Sergio Othón Serna‐Saldivar

Summary Whey protein concentrate (WPC) is an important raw material for the production of instant beverages due to its protein properties. A central composite design was devised to analyse the effects of thermoplastic extrusion of 2:1 rice flour:WPC blends in physical, chemical–nutritional and functional properties. Three main factors were selected, screw speed (225–375 r.p.m.), conditioning moisture (17%–23%) and temperature (120–180 °C) to evaluate effects on water absorption (WAI) and...

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Journal of Food Science

Effects of malondialdehyde‐induced protein oxidation on the structural characteristics of rice protein

Published: 22 October 2019

Author(s): Fang Li, Xiao‐Juan Wu, Wei Wu

Summary Malondialdehyde (MDA) was selected to represent a secondary by‐product of lipid peroxidation during rice ageing. This study aimed to investigate the effects of MDA modification on the structural characteristics of rice protein. The results showed that as MDA concentration increased, rice protein carbonyl and disulphide groups increased, but sulphydryl content decreased. The blue shift of maximum fluorescence peak, the decrease of rice protein intrinsic fluorescence intensity and the...

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Journal of Food Processing and Preservation

Effect of the extrusion process and expansion by microwave heating on physicochemical, phytochemical, and antioxidant properties during the production of indirectly expanded snack foods

Published: 22 October 2019

Author(s): Xóchitl Ariadna Ruiz‐Armenta, José de Jesús Zazueta‐Morales, Carlos Iván Delgado‐Nieblas, Armando Carrillo‐López, Ernesto Aguilar‐Palazuelos, Irma Leticia Camacho‐Hernández

Abstract The aim of this study was to evaluate the physicochemical, phytochemical, and antioxidant changes in different stages (unprocessed mixture [UM], extruded pellet [EP], and expanded product [EXP]) during the production of indirectly expanded snacks by microwave. Four mixtures (from corn starch/whole yellow corn flour), adding naranjita bagasse (NB) and/or skimmed milk powder, were used. Ash content, water absorption index (WAI), water solubility index (WSI), soluble dietary fiber (SDF),...

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Journal of Food Processing and Preservation

Mathematical modeling of infrared radiation thin‐layer drying of pumpkin samples under natural and forced convection

Published: 22 October 2019

Author(s): Ebrahim Sadeghi, Kamyar Movagharnejad, Ali Haghighi Asl

Abstract A comparative study was carried out between a large number of mathematical models and artificial neural networks to estimate the drying curves. Diamente et al. model and modified two‐term exponential‐V model were determined as the best ones describing drying curves for natural and forced drying air systems, respectively. The ANNs with 4‐9‐9‐1 and 3‐9‐1 topologies, log‐sigmoid, and hyperbolic tangent sigmoid transfer functions, and Levenberg–Marquardt training algorithm presented the...

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Journal of Food Processing and Preservation

Optimization of the extrusion process for the development of extruded snacks using peanut, buckwheat, and rice blend

Published: 22 October 2019

Author(s): Hui Li, Zhongfei Xiong, Xihong Li

Abstract Response surface methodology was applied to study the extrusion product of peanut–buckwheat–rice by a twin screw extruder. Effects of peanut–buckwheat flour (PBF) (25%–35%), feed moisture (18%–22%), barrel temperature (120–140°C), and screw speed (15–25 Hz) on the expansion ratio (ER), breaking strength (BS), bulk density (BD), and overall acceptability (OA) of extrusion product were studied based on the central composite rotatable design. Remarkable regression models that explored...

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European Journal of Organic Chemistry

A Catalyst‐Free Minisci‐Type Reaction: the C–H Alkylation of Quinoxalinones with Sodium Alkylsulfinates and Phenyliodine(III) Dicarboxylates

Published: 22 October 2019

Author(s): Liping Wang, Jiquan Zhao, Yuting Sun, Hong‐Yu Zhang, Yuecheng Zhang

A direct C–H alkylation of quinoxalinones at the C‐3 position with sodium alkylsulfinates and phenyliodine(III) dicarboxylates has been developed under catalyst‐free conditions. A series of 3‐alkylquinoxalinones were afforded in moderate to excellent yields in this protocol, which offers a practical and efficient access to biologically interesting 3‐alkylquinoxalin‐2(1H)‐one derivatives.

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European Journal of Organic Chemistry

Mechanistic Investigation of Au(III)‐Catalyzed Cycloisomerizations of N‐Propargylcarboxamides

Published: 22 October 2019

Author(s): Yuxia Liu, Peng Liu, Baoping Ling, Guang Chen, Tao Chen, Yulin Li, Siwei Bi, Dongju Zhang

DFT calculations of the AuCl3‐catalyzed cycloisomerization of N‐(propargyl)benzamide (1) have been conducted to reveal the detailed mechanism resulting in the bioactive 2,5‐disubstituted oxazole. A viable mechanism is established, featuring the co‐catalysis of the oxazoline‐AuCl3 adduct. An oxazoline intermediate is afforded firstly by AuCl3 coordination with 1, 5‐exo‐dig‐cyclization, stepwise 1‐assisted protodeauration and coordination exchange. Once formed, the oxazoline species would...

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European Journal of Organic Chemistry

A Mechanistic Insight into the Cu(II)‐Catalyzed C–N and C–O Coupling Reaction of Arylglyoxylic Acids with Isatins; A DFT Investigation

Published: 22 October 2019

Author(s): Andrea Bottoni, Matteo Calvaresi, Tainah D. Marforio, Gian Pietro Miscione

We carried out a DFT computational investigation on the mechanism of the copper(II) catalyzed C–N, C–O cross coupling reaction involving isatin and phenylglyoxylic acid recently reported by Gogoi. The mechanistic hypothesis proposed by this author is overall confirmed. Our computations demonstrated that the initial decarboxylation is an exergonic reaction (–15.3 kcal mol–1). This process, which can occur rather easily under the used experimental conditions (95 °C for 24 hours), triggers the...

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Angewandte Chemie International Edition

Conversion of a Fleeting Open‐Shell Iron Nitride into an Iron Nitrosyl

Published: 22 October 2019

Author(s): Hao‐Ching Chang, Yen‐Hao Lin, Christophe Werlé, Frank Neese, Way‐Zen Lee, Eckhard Bill, Shengfa Ye

Abstract Terminal metal nitrides have been proposed as key intermediates in a series of pivotal chemical transformations. However, exploring the chemical activity of transient tetragonal iron(V) nitrides is largely impeded by their facile dimerization in fluid solutions. Herein, in situ EPR and Mössbauer investigations are presented of unprecedented oxygenation of a paramagnetic iron(V) nitrido intermediate, [FeVN(cyclam‐ac)]+ (2, cyclam‐ac−=1,4,8,11‐tetraazacyclotetradecane‐1‐acetate anion),...

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Most-accessed articles from each ChemPubSoc Europe, ACES, and GDCh journal

August 2019

 


Hartmuth C. Kolb, M. G. Finn, K. Barry Sharpless
Click Chemistry: Diverse Chemical Function from a Few Good Reactions [Review]
Angew. Chem. Int. Ed. 2001, vol. 40, no. 11, p. 2004

Bing Liu, Lihui He, Liping Wang, Tao Li, Changcheng Li, Huayi Liu, Yunzi Luo, Rui Bao
Protein Crystallography and Site-Direct Mutagenesis Analysis of the Poly(ethylene terephthalate) Hydrolase PETase from Ideonella sakaiensis [Communication]
ChemBioChem 2018, vol. 19, no. 14, p. 1471

Petra E. de Jongh, Deryn E. Fogg, Li-Zhu Wu, Sandra González-Gallardo
Meet the Women of Catalysis [Editorial]
ChemCatChem 2019, vol. 11, no. 16, p. 3557

V. N. Danilevich, L. E. Petrovskaya, E. V. Grishin
A Highly Efficient Procedure for the Extraction of Soluble Proteins from Bacterial Cells with Mild Chaotropic Solutions [Research Article]
Chem. Eng. Technol. 2008, vol. 31, no. 6, p. 904

Rainer Stosch, Olaf Rienitz, Axel Pramann, Bernd Güttler
Wie viele Moleküle enthält ein Mol? [Artikel]
Chem. Unserer Zeit 2019, vol. 53, no. 4, p. 256

Benjamin A. E. Lehner, Vera A. E. C. Janssen, Ewa M. Spiesz, Dominik Benz, Stan J. J. Brouns, Anne S. Meyer, Herre S. J. van der Zant
Creation of Conductive Graphene Materials by Bacterial Reduction Using Shewanella Oneidensis [Full Paper]
ChemistryOpen 2019, vol. 8, no. 7, p. 888

Hanshen Xin, Xike Gao
Application of Azulene in Constructing Organic Optoelectronic Materials: New Tricks for an Old Dog [Minireview]
ChemPlusChem 2017, vol. 82, no. 7, p. 945

Miaofang Chi, Harry M. Meyer, Zili Wu, Liangbo Liang, Peter V. Bonnesen, Dale K. Hensley, Rui Peng, Yang Song, Cheng Ma, Bobby G. Sumpter, Adam J. Rondinone
High-Selectivity Electrochemical Conversion of CO2 to Ethanol using a Copper Nanoparticle/N-Doped Graphene Electrode [Full Paper]
ChemistrySelect 2016, vol. 1, no. 19, p. 6055

Michael C. Zimmermann, Thomas N. Otto, Simon Wodarz, Thomas A. Zevaco, Stephan Pitter
Mesoporous H-ZSM-5 for the Conversion of Dimethyl Ether to Hydrocarbons [Research Article]
Chem. Ing. Tech. 2019, vol. 91, no. 9, p. 1302

Abas Mohsenzadeh, Akram Zamani, Mohammad J. Taherzadeh
Bioethylene Production from Ethanol: A Review and Techno-economical Evaluation [Review]
ChemBioEng Rev. 2017, vol. 4, no. 2, p. 75

Andrey Shatskiy, Helena Lundberg, Markus D. Kärkäs
Organic Electrosynthesis: Applications in Complex Molecule Synthesis [Review]
ChemElectroChem 2019, vol. 6, no. 16, p. 4067

S. Ghosh, B. Pradhan
Lead-Free Metal Halide Perovskite Nanocrystals: Challenges, Applications, and Future Aspects [Minireview]
ChemNanoMat 2019, vol. 5, no. 3, p. 300

João M. J. M. Ravasco, Hélio Faustino, Alexandre Trindade, Pedro M. P. Gois
Bioconjugation with Maleimides: A Useful Tool for Chemical Biology [Review]
Chem. Eur. J. 2019, vol. 25, no. 1, p. 43

Stephanie C. C. van der Lubbe, Célia Fonseca Guerra
The Nature of Hydrogen Bonds: A Delineation of the Role of Different Energy Components on Hydrogen Bond Strengths and Lengths [Minireview]
Chem. Asian J. 2019, vol. 14, no. 16, p. 2760

Adrian G. Amador, Evan M. Sherbrook, Tehshik P. Yoon
A Redox Auxiliary Strategy for Pyrrolidine Synthesis via Photocatalytic [3+2] Cycloaddition [Full Paper]
Asian J. Org. Chem. 2019, vol. 8, no. 7, p. 978

Avick Kumar Ghosh, Indranil Samanta, Anushree Mondal, Wenshe Ray Liu
Covalent Inhibition in Drug Discovery [Review]
ChemMedChem 2019, vol. 14, no. 9, p. 889

Andrea Álvarez, Marta Borges, Juan José Corral-Pérez, Joan Giner Olcina, Lingjun Hu, Damien Cornu, Rui Huang, Dragos Stoian, Atsushi Urakawa
CO2 Activation over Catalytic Surfaces [Concept]
ChemPhysChem 2017, vol. 18, no. 22, p. 3135

Matthias Freitag, Nadja Möller, Andreas Rühling, Cristian A. Strassert, Bart Jan Ravoo, Frank Glorius
Photocatalysis in the Dark: Near-Infrared Light Driven Photoredox Catalysis by an Upconversion Nanoparticle/Photocatalyst System [Communication]
ChemPhotoChem 2019, vol. 3, no. 1, p. 24

Biwei Xiao, Teófilo Rojo, Xiaolin Li
Hard Carbon as Sodium-Ion Battery Anodes: Progress and Challenges [Minireview]
ChemSusChem 2019, vol. 12, no. 1, p. 133

Didier Astruc
Why is Ferrocene so Exceptional? [Microreview]
Eur. J. Inorg. Chem. 2017, p. 6

Kennedy J. Ngwira, Jonas Kühlborn, Quintino A. Mgani, Charles B. de Koning, Till Opatz
Front Cover: Valorisation of Cashew Nut Shell Liquid Phenolics in the Synthesis of UV Absorbers (Eur. J. Org. Chem. 30/2019) [Cover Picture]
Eur. J. Org. Chem. 2019, p. 4763

Cover Picture Lebensmittelchemie 4/2019 [Cover Picture]
Lebensmittelchemie 2019, vol. 73, no. 4

Olaf Deutschmann, Roland Dittmeyer, Jan-Dierk Grunwaldt, Gunther Kolb, Stefan Löbbecke, Gregor D. Wehinger
Technische Chemie [Wissenschaft + Forschung]
Nachr. Chem. 2019, vol. 67, no. 6, p. 50

Titelbild: (CHEMKON 5/2019) [Titelbild]
CHEMKON 2019, vol. 26, no. 5, p. 173

Zheng Ma, Douglas R. MacFarlane, Mega Kar
Mg Cathode Materials and Electrolytes for Rechargeable Mg Batteries: A Review [Minireview]
Batteries & Supercaps 2019, vol. 2, no. 2, p. 115

Catharina Goedecke
Why Does Iodine Turn Starch Blue?
ChemViews Magazine 2016

Most cited articles from each ChemPubSoc Europe, ACES, and GDCh journal


2017

 


Eric J. Popczun, Carlos G. Read, Christopher W. Roske, Nathan S. Lewis, Raymond E. Schaak
Highly Active Electrocatalysis of the Hydrogen Evolution Reaction by Cobalt Phosphide Nanoparticles
Angew. Chem. Int. Ed. 2014, vol. 53, pp. 5427–5430

Philippe Compain, Anne Bodlenner
The Multivalent Effect in Glycosidase Inhibition: A New, Rapidly Emerging Topic in Glycoscience [Minireview]
ChemBioChem 2014, vol. 15, pp. 1239–1251

Zhi-Yuan Gu, Jihye Park, Aaron Raiff, Zhangwen Wei, Hong-Cai Zhou
Metal–Organic Frameworks as Biomimetic Catalysts [Minireview]
ChemCatChem 2014, vol. 6, pp. 67–75

Anthony J. Arduengo, Roland Krafczyk
Auf der Suche nach Stabilen Carbenen [Organische Chemie]
Chem. Unserer Zeit 1998, vol. 32, pp. 6–14

Félix Sancenón, Lluís Pascual, Mar Oroval, Elena Aznar, Ramón Martínez-Máñez
Gated Silica Mesoporous Materials in Sensing Applications [Review]
ChemistryOpen 2015, vol. 4, pp. 418–437

Jun Pu, Tingting Wang, Haiyang Wang, Yao Tong, Chenchen Lu, Wei Kong, Zhenghua Wang
Direct Growth of NiCo2S4 Nanotube Arrays on Nickel Foam as High-Performance Binder-Free Electrodes for Supercapacitors [Full Paper]
ChemPlusChem 2014, vol. 79, pp. 577–583

Francisco Trespalacios, Ignacio E. Grossmann
Review of Mixed-Integer Nonlinear and Generalized Disjunctive Programming Methods [Review]
Chemie Ingenieur Technik 2014, vol. 86, pp. 991–1012

Xiaosi Zhou, Yu-Guo Guo
Highly Disordered Carbon as a Superior Anode Material for Room-Temperature Sodium-Ion Batteries [Communication]
ChemElectroChem 2014, vol. 1, pp. 83–86

Chuanxi Wang, Zhenzhu Xu, Chi Zhang
Polyethyleneimine-Functionalized Fluorescent Carbon Dots: Water Stability, pH Sensing, and Cellular Imaging [Full Paper]
ChemNanoMat 2015, vol. 1, pp. 122–127

Matthew N. Hopkinson, Basudev Sahoo, Jun-Long Li, Frank Glorius
Dual Catalysis Sees the Light: Combining Photoredox with Organo-, Acid, and Transition-Metal Catalysis [Minireview]
Chemistry – A European Journal 2014, vol. 20, pp. 3874–3886

Yinuo Wu, Jun Wang, Fei Mao, Fuk Yee Kwong
Palladium-Catalyzed Cross-Dehydrogenative Functionalization of C(sp2)–H Bonds [Focus Review]
Chemistry – An Asian Journal 2014, vol. 9, pp. 26–47

Derong Cao, Herbert Meier
Pillar[n]arenes—a Novel, Highly Promising Class of Macrocyclic Host Molecules [Focus Review]
Asian Journal of Organic Chemistry 2014, vol. 3, pp. 244–262

Daniel Gallenkamp, Kathy A. Gelato, Bernard Haendler, Hilmar Weinmann
Bromodomains and Their Pharmacological Inhibitors [Review]
ChemMedChem 2014, vol. 9, pp. 438–464

Antonio Bauzá, Tiddo J. Mooibroek, Antonio Frontera
The Bright Future of Unconventional σ/π-Hole Interactions [Review]
ChemPhysChem 2015, vol. 16, pp. 2496–2517

Ksenia S. Egorova, Valentine P. Ananikov
Toxicity of Ionic Liquids: Eco(cyto)activity as Complicated, but Unavoidable Parameter for Task-Specific Optimization [Review]
ChemSusChem 2014, vol. 7, pp. 336–360

Shunichi Fukuzumi, Dachao Hong
Homogeneous versus Heterogeneous Catalysts in Water Oxidation [Microreview]
Eur. J. Inorg. Chem. 2014, pp. 645–659

Fabien Toulgoat, Sébastien Alazet, Thierry Billard
Direct Trifluoromethylthiolation Reactions: The “Renaissance” of an Old Concept [Microreview]
Eur. J. Org. Chem. 2014, pp. 2415–2428

David Schweinfurth, Naina Deibel, Fritz Weisser, Biprajit Sarkar
Mit Klick zu neuen Liganden [Magazin]
Nachr. Chem. 2011, vol. 59, pp. 937–941

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