Analysis for Partition Equilibrium of Amino Acid Derivatives in Aqueous/Organic Biphasic Systems

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概要

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• The overall partition coefficients of the acid and amine components of amino acid derivatives, the substrates for proteinase-catalyzed synthesis of oligopeptide precursors, in an aqueous/organic biphasic system were studied both experimentally and theoretically. In a single-component system containing either an acid or amine component, the overall partition coefficient was well expressed by a model using the acid dissociation constant and partition coefficients for the non-ionized and ionized forms of the component. The overall partition coefficient in a binary-component system containing both acid and amine components was well simulated by the model when the formation of ion-pair complexes in the organic solvent phase was taken into consideration in addition to the partitioning of the non-ionized and ionized forms of the components. The formation of ion-pair complexes in the organic solvent phase was indicated by an analysis using Fourier transform infrared ray spectroscopy (FT-IR). In addition to the partition equilibrium, the aqueous-phase pH change after partitioning could be predicted by the model.

• 社団法人日本生物工学会の論文
• 1999-12-25

著者

• Nakanishi Kazuhiro

  Graduate School of Natural Science and Technology, Okayama University

• Imamura Koreyoshi

  Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University

• Sakiyama Takaharu

  Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University

• Nakanishi Kazuhiro

  Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University

• 崎山 高明

  Department Of Bioscience And Biotechnology Faculty Of Engineering Okayama University:(present Addres

• Morita M

  Project Group Of Risk Assessment And Management For Endocrine Disruptor And Dioxin-like Compounds Na

• TANAKA Keizo

  Department of Thoracic and Cardiovascular Surgery, Mie Unicersity

• TANINO KEI

  Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University

• Morita Masatomo

  Department Of Bioengineering Tokyo Institute Of Technology

• MIYANAGA MASAMITSU

  Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University

• Tanaka Keizo

  Department Of Thoracic And Cardiovascular Surgery Anjo Kosei Hospital

• Tanino Kei

  Department Of Bioscience And Biotechnology Faculty Of Engineering Okayama University

• Sakiyama Takaharu

  Department Of Agricultural Chemistry Faculty Of Agriculture The University Of Tokyo

• Nakanishi Kazuhiro

  Department Of Bioscience And Biotechnology Faculty Of Engineering Okayama University

• Nakanishi K

  Department Of Bioscience And Biotechnology Faculty Of Engineering Okayama University

• Nakanishi Kazuhiro

  Division Of Chemistry And Biochemistry Graduate School Of Natural Science And Technology Okayama Uni

• Nakanishi Kazuhiro

  Department Of Anesthesia Nippon Medical School

• Morita M

  Department Of Bioscience And Biotechnology Faculty Of Engineering Okayama University

• Imamura Koreyoshi

  Department Of Bioscience And Biotechnology Faculty Of Engineering Okayama University

• Miyanaga Masamitsu

  Department Of Bioscience And Biotechnology Faculty Of Engineering Okayama University

• Nakanishi Kazuhiro

  Deparment Of Food Science And Technology Faculty Of Agriculture Kyoto University

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