The Experts below are selected from a list of 4464 Experts worldwide ranked by ideXlab platform
Albert Liptay - One of the best experts on this subject based on the ideXlab platform.
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application of osmotic treatment in tomato processing effect of skin treatments on Mass Transfer in osmotic dehydration of tomatoes
Food Research International, 1997Co-Authors: John Shi, Marc Le Maguer, Samuel L Wang, Albert LiptayAbstract:Abstract Osmotic dehydration can be a method to minimize negative modifications of fresh food components during processing. Cut tomatoes are poorly suited to osmotic dehydration because of their heterogeneous texture and potential excessive loss of liquid components. Moreover, the limiting stage of whole tomato fruit dehydration is water movement through the skin. Skin treatments followed by osmotic dehydration of whole tomatoes was tested. A NaOH solution mixed with ethyl oleate had less tomato fruit peel damage and higher water removal, than a NaOH solution by itself. The NaOH solution was more effective than a HCl solution in water removal. Chemical skin treatment of 7–8% NaOH solution resulted in undesirable tomato texture softening at room temperature. Physical skin puncturing treatment had higher water removal potential than chemical skin treatments. Physical treatment of tomato skin did not create waste material. A kinetic study was done to analyze the relationship between skin permeability and the Mass Transfer Property.
Linjie Zhi - One of the best experts on this subject based on the ideXlab platform.
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n p co doped hollow carbon nanofiber membranes with superior Mass Transfer Property for trifunctional metal free electrocatalysis
Nano Energy, 2019Co-Authors: Yang Gao, Zhichang Xiao, Debin Kong, Rashid Iqbal, Quanhong Yang, Linjie ZhiAbstract:Abstract Carbon-based metal-free electrocatalysts have inspired extensive efforts to explore their applications in many nontrivial electrochemical reactions, such as oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER), by virtue of the integrated advantages including low cost, sustainability, longevity, and multifunctionality. Herein, N,P co-doped hollow carbon nanofiber (N,P–HCNF) membranes were facilely prepared via coaxial electrospinning technology, which are bestowed with a hierarchical porous architecture, turbostratic structures, and abundant catalytically active sites such as doping, defects, and edges. Benefiting from structural features of the one-dimensional (1D) carbon hollow nanoarchitecture, which affords plentiful active sites, continuous conducting pathways, and benign Mass Transfer channels, the resultant catalyst reveals an excellent trifunctional electrocatalytic activity for ORR, OER, and HER. Impressively, it exhibits one of the best metal-free bifunctional electrocatalytic activities in oxygen electrocatalysis as characterized by a low potential deviation (ΔE) of 0.73 V between the half-wave potential (E 1/2) for ORR and the potential reaching 10 mA cm−2 (Ej=10) for OER. Significantly, further investigations demonstrate that the effect of Mass Transfer makes a great difference to electrocatalytic activity, mainly through enlarged specific surface area to affect intrinsic catalytic activity and the ionic resistance in pores. This work sheds light on the design, fabrication, and regulation of highly active metal-free electrocatalysts with abundant active sites and tuned pore structures for electrocatalysis and other applications.
Chen Wang - One of the best experts on this subject based on the ideXlab platform.
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Biomimetic Nanochannel-Ionchannel Hybrid for Ultrasensitive and Label-Free Detection of MicroRNA in Cells
2019Co-Authors: Xiaoping Zhao, Muhammad Rizwan Younis, Chen Wang, Fei-fei Liu, Xinghua XiaAbstract:A biomimetic nanochannel-ionchannel hybrid coupled with electrochemical detector was developed for label-free and ultrasensitive detection of microRNA (miRNA) in cells. Probe single stranded DNA (ssDNA) was first immobilized on the outer surface of the nanochannel-ionchannel hybrid membrane, which can hybridize with the target miRNA in cells. Due to the unique Mass Transfer Property of the hybrid, the DNA-miRNA hybridization kinetics can be sensitively monitored in real-time using the electrochemical technique. More importantly, due to the super small size of the ionchannels, the DNA probe immobilization and hybridization process can be carried out on the outer surface of the ionchannel side, which can effectively avoid the blockage and damage of channels and thus considerably enhance the reproducibility and accuracy of the method. Using this strategy, the miRNA ranging from 0.1 fM to 0.1 μM can be facilely detected with a low detection limit of 15.4 aM, which is much lower than most reported work. The present strategy provides a sensitive and label-free miRNA detection platform, which will be of great significance in biomedical research and clinical diagnosis
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ultrasensitive capture detection and release of circulating tumor cells using a nanochannel ion channel hybrid coupled with electrochemical detection technique
Analytical Chemistry, 2017Co-Authors: Jing Cao, Xiaoping Zhao, Muhammad Rizwan Younis, Xinghua Xia, Chen WangAbstract:With the growing demands of the early, accurate, and sensitive diagnosis for cancers, the development of new diagnostic technologies becomes increasingly important. In this study, we proposed a strategy for efficient capture and sensitive detection of circulating tumor cells (CTCs) using an array nanochannel–ion channel hybrid coupled with an electrochemical detection technique. The aptamer probe was immobilized on the ion channel surface to couple with the protein overexpressed on the CTCs membrane. Through this special molecular recognition, CTCs can be selectively captured. The trapped CTCs cover the ion channel entrance efficiently, which will dramatically block the ionic flow through channels, resulting in a varied Mass-Transfer Property of the nanochannel–ion channel hybrid. On the basis of the changed Mass-Transfer properties, the captured CTCs can be sensitively detected using the electrochemical linear sweep voltammetry technique. Furthermore, due to the amplified response of array channels compa...
John Shi - One of the best experts on this subject based on the ideXlab platform.
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application of osmotic treatment in tomato processing effect of skin treatments on Mass Transfer in osmotic dehydration of tomatoes
Food Research International, 1997Co-Authors: John Shi, Marc Le Maguer, Samuel L Wang, Albert LiptayAbstract:Abstract Osmotic dehydration can be a method to minimize negative modifications of fresh food components during processing. Cut tomatoes are poorly suited to osmotic dehydration because of their heterogeneous texture and potential excessive loss of liquid components. Moreover, the limiting stage of whole tomato fruit dehydration is water movement through the skin. Skin treatments followed by osmotic dehydration of whole tomatoes was tested. A NaOH solution mixed with ethyl oleate had less tomato fruit peel damage and higher water removal, than a NaOH solution by itself. The NaOH solution was more effective than a HCl solution in water removal. Chemical skin treatment of 7–8% NaOH solution resulted in undesirable tomato texture softening at room temperature. Physical skin puncturing treatment had higher water removal potential than chemical skin treatments. Physical treatment of tomato skin did not create waste material. A kinetic study was done to analyze the relationship between skin permeability and the Mass Transfer Property.
Xinghua Xia - One of the best experts on this subject based on the ideXlab platform.
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Biomimetic Nanochannel-Ionchannel Hybrid for Ultrasensitive and Label-Free Detection of MicroRNA in Cells
2019Co-Authors: Xiaoping Zhao, Muhammad Rizwan Younis, Chen Wang, Fei-fei Liu, Xinghua XiaAbstract:A biomimetic nanochannel-ionchannel hybrid coupled with electrochemical detector was developed for label-free and ultrasensitive detection of microRNA (miRNA) in cells. Probe single stranded DNA (ssDNA) was first immobilized on the outer surface of the nanochannel-ionchannel hybrid membrane, which can hybridize with the target miRNA in cells. Due to the unique Mass Transfer Property of the hybrid, the DNA-miRNA hybridization kinetics can be sensitively monitored in real-time using the electrochemical technique. More importantly, due to the super small size of the ionchannels, the DNA probe immobilization and hybridization process can be carried out on the outer surface of the ionchannel side, which can effectively avoid the blockage and damage of channels and thus considerably enhance the reproducibility and accuracy of the method. Using this strategy, the miRNA ranging from 0.1 fM to 0.1 μM can be facilely detected with a low detection limit of 15.4 aM, which is much lower than most reported work. The present strategy provides a sensitive and label-free miRNA detection platform, which will be of great significance in biomedical research and clinical diagnosis
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ultrasensitive capture detection and release of circulating tumor cells using a nanochannel ion channel hybrid coupled with electrochemical detection technique
Analytical Chemistry, 2017Co-Authors: Jing Cao, Xiaoping Zhao, Muhammad Rizwan Younis, Xinghua Xia, Chen WangAbstract:With the growing demands of the early, accurate, and sensitive diagnosis for cancers, the development of new diagnostic technologies becomes increasingly important. In this study, we proposed a strategy for efficient capture and sensitive detection of circulating tumor cells (CTCs) using an array nanochannel–ion channel hybrid coupled with an electrochemical detection technique. The aptamer probe was immobilized on the ion channel surface to couple with the protein overexpressed on the CTCs membrane. Through this special molecular recognition, CTCs can be selectively captured. The trapped CTCs cover the ion channel entrance efficiently, which will dramatically block the ionic flow through channels, resulting in a varied Mass-Transfer Property of the nanochannel–ion channel hybrid. On the basis of the changed Mass-Transfer properties, the captured CTCs can be sensitively detected using the electrochemical linear sweep voltammetry technique. Furthermore, due to the amplified response of array channels compa...