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Contribution of Monomeric Anthocyanins to the Color of Young Red Wine: Statistical and Experimental Approaches

20-Nov-2015 | Fu Liang Han, Zheng Li, Yan Xu, Journal of Food Science, 2015

ABSTRACT Monomeric anthocyanin contributions to young red wine color were investigated using partial least square regression (PLSR) and aqueous alcohol solutions in this study. Results showed that the correlation between the anthocyanin concentration and the solution color fitted in a ...


Distribution and Organoleptic Impact of Ethyl 3-Hydroxybutanoate Enantiomers in Wine

20-Nov-2015 | Georgia Lytra; Margaux Cameleyre; Sophie Tempere; Jean-Christophe Barbe, Journal of Agricultural and Food Chemistry, 2015

Enantiomers of ethyl 3-hydroxybutanoate were assayed in 87 commercial wines from various vintages and origins, using chiral gas chromatography (β-cyclodextrin). Generally, ethyl 3-hydroxybutanoate levels were higher in red than in white wines of the same age. The average S/R enantiomeric ratio of ...


Impact of Water-Depletion Layer on Transport in Hydrophobic Nanochannels

20-Nov-2015 | Yuhui He; Makusu Tsutsui; Xiang Shui Miao; Masateru Taniguchi, Analytical Chemistry, 2015

Recent experiments showed that by fabricating nanofluidic channels with hydrophobic materials, the measured amplitudes of both electroosmotic flow (EOF) and ionic current deviated significantly from the conventional electrokinetic modeling indication. Among these unexpected observations, the ...


Sweeping of hydrophobic amines under inhomogeneous electric field and low surfactant concentration in micellar electrokinetic chromatography

19-Nov-2015 | Krzesimir Ciura, Piotr Kowalski, Joanna Nowakowska, Michał Markuszewski, Tomasz Bączek, Szymon Dziomba, ELECTROPHORESIS, 2015

The influence of sample matrix on sample sweeping in micellar electrokinetic chromatography (MEKC) was examined in the presented manuscript. Significant focusing effect was observed for relatively hydrophobic cationic compounds (emetine, strychnine and quinine) using high ionic strength sample ...


Efficient photo‐oxidation of guaiacol to organic acids with hydrogen peroxide by microwave discharge electrodeless lamp

18-Nov-2015 | Dajie Zhang, Binzhe Sun, Lian Duan, Yufang Tao, Aihua Xu, Xiaoxia Li, Chemical Engineering & Technology, 2015

Abstract The production of chemicals from lignin by green and sustainable technologies is a promising alternative route to replace fossil fuels. In this report, the photo‐oxidation of guaiacol, a model of lignin, to value‐added carboxylic acids with microwave discharge electrodeless lamp as ...


Corrosion inhibition of pure aluminium and AA2014‐T6 alloy by strontium chromate at low concentration

18-Nov-2015 | Yanwen Liu, Zuwei Feng, Xiaorong Zhou, George E. Thompson, Peter Skeldon, Stuart B. Lyon, Simon R. Gibbon, Derek Graham, Surface and Interface Analysis, 2015

The influence of a low concentration of strontium chromate on the corrosion inhibition of superpure aluminium and AA2014‐T6 aluminium alloy in 0.6 m chloride solution has been investigated to simulate the leaching process of inhibitors from coatings. The potential‐time and polarisation behaviour ...


Osmotic power production from seawater brine by hollow fiber membrane modules: Net power output and optimum operating conditions

18-Nov-2015 | Sui Zhang, Tai‐Shung Chung, AIChE Journal, 2015

Abstract This study analyzes the net energy output and optimum operating conditions for osmotic power generation from seawater brine based on the currently available hollow fiber membranes in the module scale. Factors that are influential on membrane performances, such as external ...


Sustainability, Vol. 7, Pages 15302-15318: Adsorptive Removal of Reactive Black 5 from Wastewater Using Bentonite Clay: Isotherms, Kinetics and Thermodynamics

18-Nov-2015 | Amin, Muhammad Tahir; Alazba, Abdulrahman Ali; Shafiq, Muhammad, Sustainability, 2015

The studies of the kinetics and isotherms adsorption of the Reactive Black 5 (RB5) onto bentonite clay were explored in a batch study in a laboratory. The maximum RB5 adsorption conditions of bentonite clay were optimized such as shaking speed (100 rpm), temperature (323 K), pH (10), contact ...


Synthesis of Nitrogen-Doped Graphene Quantum Dots at Low Temperature for Electrochemical Sensing Trinitrotoluene

18-Nov-2015 | Zhewei Cai; Fumin Li; Ping Wu; Lijuan Ji; Hui Zhang; Chenxin Cai; Dominic F. Gervasio, Analytical Chemistry, 2015

Nitrogen-doped graphene quantum dots (N-GQDs) are synthesized at low temperature as a new catalyst allowing electrochemical detection of 2,4,6-trinitrotoluene (TNT). N-GQDs are made by an oxidative ultrasonication of graphene oxide (GO) forming nanometer-sized species, which are then chemically ...


Preparation and evaluation of alginate/chitosan microspheres containing pheromones for pest control of Megaplatypus mutatus Chapuis (Platypodinae: Platypodidae)

17-Nov-2015 | Gabriela A. Valladares, Paola González Audino, Miriam C. Strumia, Polymer International, 2015

Abstract This work describes the optimization of an alginate/chitosan microsphere preparation for the encapsulation of a sexual pheromone, 6‐methyl‐5‐hepten‐2‐ol (sulcatol), to achieve a slow‐release device for the biological control of the Megaplatypus mutatus pest. To evaluate and select the ...


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