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Yeh Wen Wang - One of the best experts on this subject based on the ideXlab platform.
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Effects of Homochiral Molecules of (S)-(+)-Ibuprofen and (S)-(−)-Sodium Ibuprofen Dihydrate on the Crystallization Kinetics of Racemic (R,S)-(±)-Sodium Ibuprofen Dihydrate
Crystal Growth & Design, 2008Co-Authors: Tu Lee, Ying Hsiu Chen, Yeh Wen WangAbstract:The aim of this paper is to identify the effects of homochiral molecules such as (S)-(+)-Ibuprofen and (S)-(−)-sodium Ibuprofen dihydrate on the crystallization kinetics: the induction period, the crystal growth rate, and the end point of the racemic compound of (R,S)-(±)-sodium Ibuprofen dihydrate. Crystallization kinetics of racemic species of sodium Ibuprofen dihydrate in the presence of small amounts of homochiral parent molecules of (S)-(+)-Ibuprofen and its constituent enantiomers (S)-(−)-sodium Ibuprofen dihydrate were studied by electrical conductance, optical microscopy, differential scanning calorimetry, and wide-angle powder X-ray diffraction. Racemic (R,S)-(±)-sodium Ibuprofen dihydrate with self-association property was sensitive to processing history and deserved a tight control for reproducibility on scale-up. Crystals grown from a racemic water−acetone solution of sodium Ibuprofen dihydrate and vaccuum-dried at 90 °C for 4 h produced racemic species of α-form racemic compounds and γ-form r...
Adhityan Appan - One of the best experts on this subject based on the ideXlab platform.
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phytoextraction phytotransformation and rhizodegradation of Ibuprofen associated with typha angustifolia in a horizontal subsurface flow constructed wetland
Water Research, 2016Co-Authors: Yifei Li, Jiefeng Zhang, Bing Wu, Wun Jern Ng, Adhityan AppanAbstract:Abstract Widespread occurrence of trace pharmaceutical residues in aquatic environments is of great concerns due to the potential chronic toxicity of certain pharmaceuticals including Ibuprofen on aquatic organisms even at environmental levels. In this study, the phytoextraction, phytotransformation and rhizodegradation of Ibuprofen associated with Typha angustifolia were investigated in a horizontal subsurface flow constructed wetland system. The experimental wetland system consisted of a planted bed with Typha angustifolia and an unplanted bed (control) to treat Ibuprofen-loaded wastewater (∼107.2 μg L −1 ). Over a period of 342 days, Ibuprofen was accumulated in leaf sheath and lamina tissues at a mean concentration of 160.7 ng g −1 , indicating the occurrence of the phytoextraction of Ibuprofen. Root-uptake Ibuprofen was partially transformed to Ibuprofen carboxylic acid, 2-hydroxy Ibuprofen and 1-hydroxy Ibuprofen which were found to be 1374.9, 235.6 and 301.5 ng g −1 in the sheath, respectively, while they were 1051.1, 693.6 and 178.7 ng g −1 in the lamina. The findings from pyrosequencing analysis of the rhizosphere bacteria suggest that the Dechloromonas sp., the Clostridium sp. (e.g. Clostridium saccharobutylicum ), the order Sphingobacteriales, and the Cytophaga sp. in the order Cytophagales were most probably responsible for the rhizodegradation of Ibuprofen.
Tu Lee - One of the best experts on this subject based on the ideXlab platform.
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Effects of Homochiral Molecules of (S)-(+)-Ibuprofen and (S)-(−)-Sodium Ibuprofen Dihydrate on the Crystallization Kinetics of Racemic (R,S)-(±)-Sodium Ibuprofen Dihydrate
Crystal Growth & Design, 2008Co-Authors: Tu Lee, Ying Hsiu Chen, Yeh Wen WangAbstract:The aim of this paper is to identify the effects of homochiral molecules such as (S)-(+)-Ibuprofen and (S)-(−)-sodium Ibuprofen dihydrate on the crystallization kinetics: the induction period, the crystal growth rate, and the end point of the racemic compound of (R,S)-(±)-sodium Ibuprofen dihydrate. Crystallization kinetics of racemic species of sodium Ibuprofen dihydrate in the presence of small amounts of homochiral parent molecules of (S)-(+)-Ibuprofen and its constituent enantiomers (S)-(−)-sodium Ibuprofen dihydrate were studied by electrical conductance, optical microscopy, differential scanning calorimetry, and wide-angle powder X-ray diffraction. Racemic (R,S)-(±)-sodium Ibuprofen dihydrate with self-association property was sensitive to processing history and deserved a tight control for reproducibility on scale-up. Crystals grown from a racemic water−acetone solution of sodium Ibuprofen dihydrate and vaccuum-dried at 90 °C for 4 h produced racemic species of α-form racemic compounds and γ-form r...
Yifei Li - One of the best experts on this subject based on the ideXlab platform.
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phytoextraction phytotransformation and rhizodegradation of Ibuprofen associated with typha angustifolia in a horizontal subsurface flow constructed wetland
Water Research, 2016Co-Authors: Yifei Li, Jiefeng Zhang, Bing Wu, Wun Jern Ng, Adhityan AppanAbstract:Abstract Widespread occurrence of trace pharmaceutical residues in aquatic environments is of great concerns due to the potential chronic toxicity of certain pharmaceuticals including Ibuprofen on aquatic organisms even at environmental levels. In this study, the phytoextraction, phytotransformation and rhizodegradation of Ibuprofen associated with Typha angustifolia were investigated in a horizontal subsurface flow constructed wetland system. The experimental wetland system consisted of a planted bed with Typha angustifolia and an unplanted bed (control) to treat Ibuprofen-loaded wastewater (∼107.2 μg L −1 ). Over a period of 342 days, Ibuprofen was accumulated in leaf sheath and lamina tissues at a mean concentration of 160.7 ng g −1 , indicating the occurrence of the phytoextraction of Ibuprofen. Root-uptake Ibuprofen was partially transformed to Ibuprofen carboxylic acid, 2-hydroxy Ibuprofen and 1-hydroxy Ibuprofen which were found to be 1374.9, 235.6 and 301.5 ng g −1 in the sheath, respectively, while they were 1051.1, 693.6 and 178.7 ng g −1 in the lamina. The findings from pyrosequencing analysis of the rhizosphere bacteria suggest that the Dechloromonas sp., the Clostridium sp. (e.g. Clostridium saccharobutylicum ), the order Sphingobacteriales, and the Cytophaga sp. in the order Cytophagales were most probably responsible for the rhizodegradation of Ibuprofen.
Ying Hsiu Chen - One of the best experts on this subject based on the ideXlab platform.
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Effects of Homochiral Molecules of (S)-(+)-Ibuprofen and (S)-(−)-Sodium Ibuprofen Dihydrate on the Crystallization Kinetics of Racemic (R,S)-(±)-Sodium Ibuprofen Dihydrate
Crystal Growth & Design, 2008Co-Authors: Tu Lee, Ying Hsiu Chen, Yeh Wen WangAbstract:The aim of this paper is to identify the effects of homochiral molecules such as (S)-(+)-Ibuprofen and (S)-(−)-sodium Ibuprofen dihydrate on the crystallization kinetics: the induction period, the crystal growth rate, and the end point of the racemic compound of (R,S)-(±)-sodium Ibuprofen dihydrate. Crystallization kinetics of racemic species of sodium Ibuprofen dihydrate in the presence of small amounts of homochiral parent molecules of (S)-(+)-Ibuprofen and its constituent enantiomers (S)-(−)-sodium Ibuprofen dihydrate were studied by electrical conductance, optical microscopy, differential scanning calorimetry, and wide-angle powder X-ray diffraction. Racemic (R,S)-(±)-sodium Ibuprofen dihydrate with self-association property was sensitive to processing history and deserved a tight control for reproducibility on scale-up. Crystals grown from a racemic water−acetone solution of sodium Ibuprofen dihydrate and vaccuum-dried at 90 °C for 4 h produced racemic species of α-form racemic compounds and γ-form r...
