A
Atsushi Shoji
Researcher at Tokyo University of Pharmacy and Life Sciences
Publications - 42
Citations - 449
Atsushi Shoji is an academic researcher from Tokyo University of Pharmacy and Life Sciences. The author has contributed to research in topics: Chemistry & Lipid bilayer. The author has an hindex of 10, co-authored 35 publications receiving 371 citations. Previous affiliations of Atsushi Shoji include Nihon University & University of Tokyo.
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Journal ArticleDOI
Analytical separation of tea catechins and food-related polyphenols by high-speed counter-current chromatography
Akio Yanagida,Atsushi Shoji,Yoichi Shibusawa,Heisaburo Shindo,Motoyuki Tagashira,Mitsuo Ikeda,Yoichiro Ito +6 more
TL;DR: High-speed counter-current chromatography (HSCCC) using the type-J coil planet centrifuge was applied to compositional analysis of tea catechins and separation of other food-related polyphenols, providing useful information about the hydrophobic diversity of these bioactivepolyphenols present in various types of teas and food products.
Journal ArticleDOI
Retention behavior of oligomeric proanthocyanidins in hydrophilic interaction chromatography
Akio Yanagida,Hirokazu Murao,Mayumi Ohnishi-Kameyama,Yutaka Yamakawa,Atsushi Shoji,Motoyuki Tagashira,Tomomasa Kanda,Heisaburo Shindo,Yoichi Shibusawa +8 more
TL;DR: Data reveal that two effects, i.e. hydrogen bonding between the carbamoyl terminal on the column and the hydroxyl group of solute oligomer and hydrophilicity based on the high-order structure of oligomeric PAs, corporately contribute to the separation, but the hydrogen bonding effect is predominant in the authors' HILIC separation mode.
Journal ArticleDOI
Determination of Log Po/w for Catechins and Their Isomers, Oligomers, and Other Organic Compounds by Stationary Phase Controlled High‐Speed Countercurrent Chromatography
Yoichi Shibusawa,Atsushi Shoji,Akio Yanagida,Heisaburo Shindo,Motoyuki Tagashira,Mitsuo Ikeda,Yoichiro Ito +6 more
TL;DR: The stationary phase volume in the CCC column was effectively controlled under hydrodynamic equilibrium system, and the linear relationship (correlation coefficient value, r=0.993) was observed between log P o/w values obtained by the shake-flask method and those values by the HSCCC method as mentioned in this paper.
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High-throughput determination of octanol/water partition coefficients using a shake-flask method and novel two-phase solvent system
TL;DR: Log D values for highly polar compounds for which no log D values have been reported, such as amino acids, peptides, proteins, nucleosides, and nucleotides, can be estimated indirectly from the narrow range of log K(AN) values determined using the present method.
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A Fluorinated Carbanionic Substituent for Improving Water Solubility and Lipophilicity of Fluorescent Dyes.
TL;DR: This work clearly demonstrates that the fluorinated, highly stabilised carbanionic substituent is a new option for controlling the macroscopic property of chemical materials.