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    Article

    Influence of oxidation temperature on the gas permeation and separation properties in a microporous carbon membrane

    Of thermosetting polymers, polyphenylene oxide (PPO) is considered as one of the promising alternative polymeric precursors for carbon membrane preparation. In this study, the PPO derived carbon membranes were...

    Hong-Joo Lee, Hiroyuki Suda, Kenji Haraya in Korean Journal of Chemical Engineering (2006)

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    Article

    Gas permeation properties in a composite mesoporous alumina ceramic membrane

    In this study, the effect of different chemical interactions on the gas permeation properties were investigated in the composite mesoporous ceramic membrane prepared with γ-alumina on the surface of a macropor...

    Hong-Joo Lee, Hiroyuki Suda, Kenji Haraya in Korean Journal of Chemical Engineering (2005)

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    Article

    Accelerated ethanol fermentation by Saccharomyces cerevisiae with addition of activated carbon

    Fermentation with the addition of activated carbon at 100 g l−1 promoted the glucose consumption and ethanol production rates of Saccharomyces cerevisiae by 1.3 and 1.1 times, respectively. With fermentation usin...

    Toru Ikegamai, Hiroshi Yanagishita, Dai Kitamoto, Kenji Haraya in Biotechnology Letters (2000)

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    Article

    Highly concentrated aqueous ethanol solutions by pervaporation using silicalite membrane — Improvement of ethanol selectivity by addition of sugars to ethanol solution

    Pervaporation performance using silicalite membranes in the separation of an ethanol/water solution was affected by the addition of sugars, sugar alcohols or yeast cells. Although the membrane flux drastically...

    Toru Ikegami, Hiroshi Yanagishita, Dai Kitamoto, Kenji Haraya in Biotechnology Letters (1999)

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    Chapter

    Polymeric Membranes for Separation

    Membrane separation is a type of filtration for fine particles including molecules or ions. The driving force for the separation is mainly the pressure difference between the two sides of a membrane. In operat...

    Kenji Haraya, Shuguang Li, Kensaku Mizoguchi in Macromolecular Science and Engineering (1999)

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    Article

    Contribution of a chain-shortening pathway to the biosynthesis of the fatty acids of mannosylerythritol lipid (biosurfactant) in the yeast Candida antarctica: Effect of β-oxidation inhibitors on biosurfactant synthesis

    Inhibitors of β-oxidation on the synthesis of glycolipid biosurfactant, mannosylerythritol lipid (MEL), were used to clarify the fatty acid metabolism of MEL in Candida antarctica. 2-Bromooctanoic acid drastic...

    Daï Kitamoto, Hiroshi Yanagishita, Kenji Haraya in Biotechnology Letters (1998)

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    Article

    One-step separation of phospholipids from triacyglycerols with asymmetric polyimide membrane in organic solution

    Convenient separation of a mixture of neutral and complex lipids was achieved by using an asymmetric polyimide membrane (M.W. cut-off : 35,000Da) with a high solvent-resistance prepared by a phase inversion pr...

    Daï Kitamoto, Hiroshi Hashimoto, Takashi Nakane, Kenji Haraya in Biotechnology Techniques (1996)

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    Article

    Effect of cerulenin on the production of mannosyl-erythritol lipids as biosurfactants by Candida antarctica

    The effect of cerulenin, anti-lipogenic antibiotic, on the production and fatty-acid profiles of biosurfactants (mannosyl-erythritol lipids) of Candida antarctica were investigated by changing the chain-length of...

    Daï Kitamoto, Hiroshi Yanagishita, Kenji Haraya in Biotechnology Letters (1995)