Transesterification of Ethylparaben by Free and Entrapped Cells of Pseudomonas cepacia

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概要

• 論文の詳細を見る

• Ethylparaben was transesterified to methylparaben in the presence of methanol by Pseudomonas cepacia. When the bacterium was incubated in water-methanol solutions of ethylparaben in the range of 0.01 to 2% methanol, the higher the content of methanol, the higher the conversion ratios of ehtylparaben. If over 5% methanol was used, the bacterium could not service and the reaction did not proceed. Transesterifications also proceeded with 1-propanol or benzyl alcohol instead of methanol, through the conversion ratios were low. Conversion ratios were found to be higher throughout the conversion period by entrapping the cells to Ca alginate or polyurethanes than for free cells. The results are presumably due to higher stability of cells in 10% alcohol in which free cells could not servive. PU-3 and PU-6 are urethane prepolymers consisting of polyetherdiol and phenylisocyanate segments. PU-3 has a high polypropyleneglyco, content, while PU-6 is high in polyethyleneglycol (1).

• 社団法人日本生物工学会の論文
• 1994-03-25

著者

• MORIMOTO Kazuhiro

  Department of Pharmaceutics, Graduate School of Pharmaceutical Sciences, Hokkaido Pharmaceutical Uni

• KOBASHI Kazunori

  Department of Urology, Kaga Central Hospital

• Matsui Toshiro

  Department Of Electrical And Electronic Engineering Tokyo Institute Of Technology

• Matsui Toshiro

  Department Of Applied Chemistry Faculty Of Engineering Doshisha University

• Morimoto Kazuhiro

  Department Of Applied Chemistry Faculty Of Engineering Doshisha University

• Suemitsu Rikisaku

  Department of Applied Chemistry, Faculty of Engineering, Doshisha University

• Horiuchi Kenichi

  Nitta Corporation, Research & Development Division, Research Department

• Horiuchi K

  Nitta Corp. Nara Jpn

• Horiuchi Kenichi

  Nitta Corporation Research & Development Division Research Department

• Suemitsu R

  Doshisha Univ. Kyoto Jpn

• Suemitsu Rikisaku

  Department Of Agricultural Chemistry Kyoto University

• Kobashi K

  Kaga Central Hospital

• Kobashi Kazunori

  Department Of Urology Kaga Central Hospital

• KOBASHI KAZUNORI

  Department of Applied Chemistry, Faculty of Engineering, Doshisha University

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