The Experts below are selected from a list of 61203 Experts worldwide ranked by ideXlab platform
Jun Dang - One of the best experts on this subject based on the ideXlab platform.
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efficient separation of high purity compounds from oxytropis falcata using two dimensional preparative chromatography
IEEE Journal of Solid-state Circuits, 2017Co-Authors: Weidong Wang, Lijin Jiao, Yun Shao, Qilan Wang, Yanduo Tao, Minxia Fan, Lijuan Mei, Jun DangAbstract:The separation of high-purity compounds from traditional Tibetan medicines plays an important role in investigating their bioactivity. Nevertheless, it is often quite difficult to isolate compounds with high purity because of the complexity of traditional Tibetan medicines. In this work, an offline two-dimensional reversed-phase preparative method was successfully developed for the separation of high-purity compounds from Oxytropis falcata. Based on the analysis results, an ODS C18 prep column was used for first-dimensional pReparation, and 14.8 g of the crude sample was separated into five fractions with a recovery of 74.6%. Then, an XAqua C18 prep column was used to isolate high-purity compounds in the second-dimensional pReparation because its separation selectivity is different with the ODS C18 stationary phase. As a result, eight compounds in the crude sample were isolated in more than 98% purity. This is the first report of trans-cinnamic acid (1) and trifolirhizin (2) from Oxytropis falcata. This method has the potential to be an efficient separation method of high-purity compounds from Oxytropis falcata and it shows great promise for the separation of high-purity compounds from complex samples.
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Efficient separation of high-purity compounds from Oxytropis falcata using two-dimensional preparative chromatography.
Journal of Separation Science, 2017Co-Authors: Weidong Wang, Lijin Jiao, Yun Shao, Qilan Wang, Jun DangAbstract:The separation of high-purity compounds from traditional Tibetan medicines plays an important role in investigating their bioactivity. Nevertheless, it is often quite difficult to isolate compounds with high purity because of the complexity of traditional Tibetan medicines. In this work, an offline two-dimensional reversed-phase preparative method was successfully developed for the separation of high-purity compounds from Oxytropis falcata. Based on the analysis results, an ODS C18 prep column was used for first-dimensional pReparation, and 14.8 g of the crude sample was separated into five fractions with a recovery of 74.6%. Then, an XAqua C18 prep column was used to isolate high-purity compounds in the second-dimensional pReparation because its separation selectivity is different with the ODS C18 stationary phase. As a result, eight compounds in the crude sample were isolated in more than 98% purity. This is the first report of trans-cinnamic acid (1) and trifolirhizin (2) from Oxytropis falcata. This method has the potential to be an efficient separation method of high-purity compounds from Oxytropis falcata and it shows great promise for the separation of high-purity compounds from complex samples. This article is protected by copyright. All rights reserved
Hideto Matsuyama - One of the best experts on this subject based on the ideXlab platform.
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PReparation of poly(lactic acid) hollow fiber membranes via phase separation methods
Journal of Membrane Science, 2009Co-Authors: Akihito Moriya, Tomohiro Sotani, Tatsuo Maruyama, Yoshikage Ohmukai, Hideto MatsuyamaAbstract:Abstract Poly(lactic acid) (PLA) is attracting a lot of attention as a bio-based polymer derived from plant resources. A hollow fiber membrane made from PLA is an alternative to the conventional hollow fiber membrane of petrochemical polymers. In this study, we succeeded in the pReparation of a PLA hollow fiber membrane using phase separation method. PLA hollow fiber membranes with various structures were prepared by varying the pReparation conditions (bore fluid composition and additive). The water permeability of the hollow fiber membrane increased as the DMSO content in the bore fluid and the PEG content in the PLA solution increased. The investigation of protein (BSA) rejection revealed that PLA hollow fiber membranes exhibited ultrafiltration performance. We found that controlling the experimental conditions allowed two different types of phase separation (liquid–liquid phase separation and solid–liquid phase separation) in the pReparation of a PLA hollow fiber membrane, resulting in the variety of the microporous structures of the hollow fiber membrane.
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effect of membrane pReparation method on the outer surface roughness of cellulose acetate butyrate hollow fiber membrane
Desalination, 2008Co-Authors: Tomohiro Sotani, Hideto MatsuyamaAbstract:Cellulose acetate butyrate (CAB) hollow fiber membrane was prepared via both thermally induced phase separation (TIPS) and nonsolvent induced phase separation (NIPS) methods. Atomic force microscope (AFM) and scanning electron microscope (SEM) were used to observe the outer surface morphology of the membranes obtained by different pReparation methods (TIPS and NIPS) and various pReparation conditions. A tapping mode was operated for studying the polymeric membranes when AFM was applied to image the outer surface of a hollow fiber membrane in the air. Both nodular structure and bumpy structure were observed. AFM images have revealed that both the nodular structure size and the roughness of the membrane outer surface were effected by the air gap distance, coagulation bath temperature and composition. Furthermore, the membrane pReparation method (TIPS or NIPS) has profound effect on membrane surface roughness.
Weidong Wang - One of the best experts on this subject based on the ideXlab platform.
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efficient separation of high purity compounds from oxytropis falcata using two dimensional preparative chromatography
IEEE Journal of Solid-state Circuits, 2017Co-Authors: Weidong Wang, Lijin Jiao, Yun Shao, Qilan Wang, Yanduo Tao, Minxia Fan, Lijuan Mei, Jun DangAbstract:The separation of high-purity compounds from traditional Tibetan medicines plays an important role in investigating their bioactivity. Nevertheless, it is often quite difficult to isolate compounds with high purity because of the complexity of traditional Tibetan medicines. In this work, an offline two-dimensional reversed-phase preparative method was successfully developed for the separation of high-purity compounds from Oxytropis falcata. Based on the analysis results, an ODS C18 prep column was used for first-dimensional pReparation, and 14.8 g of the crude sample was separated into five fractions with a recovery of 74.6%. Then, an XAqua C18 prep column was used to isolate high-purity compounds in the second-dimensional pReparation because its separation selectivity is different with the ODS C18 stationary phase. As a result, eight compounds in the crude sample were isolated in more than 98% purity. This is the first report of trans-cinnamic acid (1) and trifolirhizin (2) from Oxytropis falcata. This method has the potential to be an efficient separation method of high-purity compounds from Oxytropis falcata and it shows great promise for the separation of high-purity compounds from complex samples.
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Efficient separation of high-purity compounds from Oxytropis falcata using two-dimensional preparative chromatography.
Journal of Separation Science, 2017Co-Authors: Weidong Wang, Lijin Jiao, Yun Shao, Qilan Wang, Jun DangAbstract:The separation of high-purity compounds from traditional Tibetan medicines plays an important role in investigating their bioactivity. Nevertheless, it is often quite difficult to isolate compounds with high purity because of the complexity of traditional Tibetan medicines. In this work, an offline two-dimensional reversed-phase preparative method was successfully developed for the separation of high-purity compounds from Oxytropis falcata. Based on the analysis results, an ODS C18 prep column was used for first-dimensional pReparation, and 14.8 g of the crude sample was separated into five fractions with a recovery of 74.6%. Then, an XAqua C18 prep column was used to isolate high-purity compounds in the second-dimensional pReparation because its separation selectivity is different with the ODS C18 stationary phase. As a result, eight compounds in the crude sample were isolated in more than 98% purity. This is the first report of trans-cinnamic acid (1) and trifolirhizin (2) from Oxytropis falcata. This method has the potential to be an efficient separation method of high-purity compounds from Oxytropis falcata and it shows great promise for the separation of high-purity compounds from complex samples. This article is protected by copyright. All rights reserved
Qilan Wang - One of the best experts on this subject based on the ideXlab platform.
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efficient separation of high purity compounds from oxytropis falcata using two dimensional preparative chromatography
IEEE Journal of Solid-state Circuits, 2017Co-Authors: Weidong Wang, Lijin Jiao, Yun Shao, Qilan Wang, Yanduo Tao, Minxia Fan, Lijuan Mei, Jun DangAbstract:The separation of high-purity compounds from traditional Tibetan medicines plays an important role in investigating their bioactivity. Nevertheless, it is often quite difficult to isolate compounds with high purity because of the complexity of traditional Tibetan medicines. In this work, an offline two-dimensional reversed-phase preparative method was successfully developed for the separation of high-purity compounds from Oxytropis falcata. Based on the analysis results, an ODS C18 prep column was used for first-dimensional pReparation, and 14.8 g of the crude sample was separated into five fractions with a recovery of 74.6%. Then, an XAqua C18 prep column was used to isolate high-purity compounds in the second-dimensional pReparation because its separation selectivity is different with the ODS C18 stationary phase. As a result, eight compounds in the crude sample were isolated in more than 98% purity. This is the first report of trans-cinnamic acid (1) and trifolirhizin (2) from Oxytropis falcata. This method has the potential to be an efficient separation method of high-purity compounds from Oxytropis falcata and it shows great promise for the separation of high-purity compounds from complex samples.
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Efficient separation of high-purity compounds from Oxytropis falcata using two-dimensional preparative chromatography.
Journal of Separation Science, 2017Co-Authors: Weidong Wang, Lijin Jiao, Yun Shao, Qilan Wang, Jun DangAbstract:The separation of high-purity compounds from traditional Tibetan medicines plays an important role in investigating their bioactivity. Nevertheless, it is often quite difficult to isolate compounds with high purity because of the complexity of traditional Tibetan medicines. In this work, an offline two-dimensional reversed-phase preparative method was successfully developed for the separation of high-purity compounds from Oxytropis falcata. Based on the analysis results, an ODS C18 prep column was used for first-dimensional pReparation, and 14.8 g of the crude sample was separated into five fractions with a recovery of 74.6%. Then, an XAqua C18 prep column was used to isolate high-purity compounds in the second-dimensional pReparation because its separation selectivity is different with the ODS C18 stationary phase. As a result, eight compounds in the crude sample were isolated in more than 98% purity. This is the first report of trans-cinnamic acid (1) and trifolirhizin (2) from Oxytropis falcata. This method has the potential to be an efficient separation method of high-purity compounds from Oxytropis falcata and it shows great promise for the separation of high-purity compounds from complex samples. This article is protected by copyright. All rights reserved
Yun Shao - One of the best experts on this subject based on the ideXlab platform.
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efficient separation of high purity compounds from oxytropis falcata using two dimensional preparative chromatography
IEEE Journal of Solid-state Circuits, 2017Co-Authors: Weidong Wang, Lijin Jiao, Yun Shao, Qilan Wang, Yanduo Tao, Minxia Fan, Lijuan Mei, Jun DangAbstract:The separation of high-purity compounds from traditional Tibetan medicines plays an important role in investigating their bioactivity. Nevertheless, it is often quite difficult to isolate compounds with high purity because of the complexity of traditional Tibetan medicines. In this work, an offline two-dimensional reversed-phase preparative method was successfully developed for the separation of high-purity compounds from Oxytropis falcata. Based on the analysis results, an ODS C18 prep column was used for first-dimensional pReparation, and 14.8 g of the crude sample was separated into five fractions with a recovery of 74.6%. Then, an XAqua C18 prep column was used to isolate high-purity compounds in the second-dimensional pReparation because its separation selectivity is different with the ODS C18 stationary phase. As a result, eight compounds in the crude sample were isolated in more than 98% purity. This is the first report of trans-cinnamic acid (1) and trifolirhizin (2) from Oxytropis falcata. This method has the potential to be an efficient separation method of high-purity compounds from Oxytropis falcata and it shows great promise for the separation of high-purity compounds from complex samples.
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Efficient separation of high-purity compounds from Oxytropis falcata using two-dimensional preparative chromatography.
Journal of Separation Science, 2017Co-Authors: Weidong Wang, Lijin Jiao, Yun Shao, Qilan Wang, Jun DangAbstract:The separation of high-purity compounds from traditional Tibetan medicines plays an important role in investigating their bioactivity. Nevertheless, it is often quite difficult to isolate compounds with high purity because of the complexity of traditional Tibetan medicines. In this work, an offline two-dimensional reversed-phase preparative method was successfully developed for the separation of high-purity compounds from Oxytropis falcata. Based on the analysis results, an ODS C18 prep column was used for first-dimensional pReparation, and 14.8 g of the crude sample was separated into five fractions with a recovery of 74.6%. Then, an XAqua C18 prep column was used to isolate high-purity compounds in the second-dimensional pReparation because its separation selectivity is different with the ODS C18 stationary phase. As a result, eight compounds in the crude sample were isolated in more than 98% purity. This is the first report of trans-cinnamic acid (1) and trifolirhizin (2) from Oxytropis falcata. This method has the potential to be an efficient separation method of high-purity compounds from Oxytropis falcata and it shows great promise for the separation of high-purity compounds from complex samples. This article is protected by copyright. All rights reserved
