Eco-Engineering
Online ISSN : 1880-4500
Print ISSN : 1347-0485
ISSN-L : 1347-0485
最新号
選択された号の論文の5件中1~5を表示しています
原著論文
  • Fumiya Miyazaki, Kyohei Nomura, Fumihide Shiraishi
    2020 年 32 巻 4 号 p. 75-81
    発行日: 2020/10/31
    公開日: 2020/10/31
    ジャーナル 認証あり

    To explore the possibility of aluminum (Al) materials as a support, titanium dioxide (TiO2) was immobilized on aluminum Al foil sheets and tubes and acetaldehyde (AA) and toluene were photocatalytically decomposed. The photocatalyst immobilized on the Al foil sheet provided the highest activity at a drying temperature of 400 °C. This is mainly due to a fact that organic compounds accumulated in an electric dryer hardly adsorb on a TiO2 film in the drying process. Both the photocatalysts immobilized on the Al foil sheet and tube quickly decomposed AA and toluene to below the measurement limits of a gas chromatograph (30 and 40 ppb, respectively). Moreover, simulations on the photocatalytic decomposition of AA indicated that in the 40 m3-room under a constant release of AA from the wall, the steady-state concentration of AA certainly becomes less than the indoor-air guideline of AA if twelve reaction tubes are used. In conclusion, the Al materials can effectively be used as a support of TiO2.

  • Nguyen Huynh Phuong Uyen, Pham Thi Phuong Thao, Ryoko Asada, Kiyoshi ...
    2020 年 32 巻 4 号 p. 83-88
    発行日: 2020/10/31
    公開日: 2020/10/31
    ジャーナル 認証あり

    The activities of three kinds of lipases, namely, Candida cylindracea (AYS Amano), Pseudomonas fluorescens (AK Amano), and Burkholderia cepacia LP-7 (PS Amano SD) were investigated in enzymatic hydrolysis of canola oil. Among the lipases, AYS Amano had the highest activity in the hydrolysis of canola oil, where 60% of triglyceride (TG) was hydrolyzed in 8 h at 40 °C. The TG was degraded rapidly in 2 h, where 50% of TG was hydrolyzed to diglyceride (DG), monoglyceride (MG), and fatty acid (FA). However, the rate of hydrolysis decreased after 2 h due to a reverse reaction. Lipase inactivation by gamma ray irradiation was also examined in absorbance dose range of 0.2-1.0 kGy. The results demonstrated that the inactivation of lipase in the aqueous phase was higher than that of powder in the solid state. Moreover, ionizing radiation treatment was effective for the inactivation of lipase in oil seeds, and this inactivation method can be used to stabilize oil for long-term storage.

  • 久松 奨, 菅 敬, 奥岡 佳純, 馬場 富二夫, 谷 晃
    2020 年 32 巻 4 号 p. 89-96
    発行日: 2020/10/31
    公開日: 2020/10/31
    ジャーナル 認証あり

    Wasabi (Eutrema japonicum (Miq.) Koidz.) was grown in a traditional cultivation field using spring water in Izu peninsula for 12 months. Four different shading nets were applied to the cultivation field to reduce sun light during the whole period. Among 4 nets, white-colored net transmitted photosynthetic active radiation (PAR) most abundantly (64%), whereas black-colored net did least abundantly (22%). Blue-colored and red-colored nets had similar values of PAR transmittance (58%). Transmittance of shortwave radiation including PAR and near infrared (NIR) was almost same among white-colored, blue-colored, and red-colored nets. As a result, temperature of black-painted brass boards placed horizontally was almost same under the three nets, suggesting that white-colored net can effectively reduce NIR and transmit PAR abundantly. Whole plant fresh weight and rhizome weight of wasabi were highest under white-colored nets. Pungent components such as allyl isothiocyanate were not significantly different among the four nets. Our result suggests that white-colored net can enhance wasabi growth compared with the other three nets, probably owing to abundant PAR and suppressed NIR reaching the plant surface.

エラータ
  • 2020 年 32 巻 4 号 p. 97
    発行日: 2020/10/31
    公開日: 2020/10/31
    ジャーナル 認証あり

    Eco-engineering 32 巻 3 号の以下の記事の 47 ページに誤りがございました。

    記事表題: Tolerance of Dried Cells of a Terrestrial Cyanobacterium, Nostoc sp. HK-01 to Temperature Cycles, Helium-ion Beams, Ultraviolet Radiation (172 and 254 nm), and Gamma Rays: Primitive Analysis for Space Experiments

    著  者: Kaori Tomita-Yokotani, Shunta Kimura, Midori Ong, Reiko Ajioka, Yuichi Igarashi, Haruka Fujishiro, Hiroshi Katoh, Hirofumi Hashimoto, Hajime Mita, Shin-ichi Yokobori and Masayuki Ohmori

    誤)4 Division of Plant Functional Genomics, Advanced Science Research Promotion Center, Organization for the Promotion of Regional Innovation, Mie University

    正)4 Division of Plant Functional Genomics, Advanced Science Research Promotion Center, Organization for the Promotion of Regional Innovation, Mie University, Tsu, Mie 514-8507, Japan

    誤)5 Institute of Space and Astronautical Sciences, Japan Aerospace Exploration Agency (ISAS/JAXA), Sagamihara, Japan

    正)5 Institute of Space and Astronautical Sciences, Japan Aerospace Exploration Agency (ISAS/JAXA), Sagamihara, Kanagawa 252-5210, Japan

    誤)6 Faculty of Engineering, Fukuoka University, Fukuoka, Japan

    正)6 Faculty of Engineering, Fukuoka Institute of Technology, Fukuoka, Fukuoka 811-0295, Japan

    誤)7 School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo Japan

    正)7 School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo 192-0392, Japan

    以上のように訂正し、ここに謹んでお詫び申し上げます。 Eco-Engineering 誌編集委員会

  • 2020 年 32 巻 4 号 p. 98
    発行日: 2020/10/31
    公開日: 2020/10/31
    ジャーナル 認証あり

    Eco-engineering 32 巻 3 号掲載原著論文の目次に関しまして、著者のお名前に誤りがございました。 (誤)浅田良子 ⇒ (正)朝田良子

    記事表題: A New Method for Production of Green Biodiesel Fuel using FAME as a Co-solvent

    著  者: Nguyen Huynh Phuong Uyen, Pham Thi Phuong Thao, Ryoko Asada, Kiyoshi Imamura, Yoshiaki Kitaya, Masakazu Furuta and Yasuaki Maeda

    頁:61-67

    誤)脂肪酸メチルエステルを共溶媒として利用したバイオディーゼル燃料の新規低環境負荷製造法

    Nguyen Huynh Phuong Uyen、Pham Thi Phuong Thao、浅田良子、今村 清、 北宅善昭、古田雅一、前田泰昭 61

    正)脂肪酸メチルエステルを共溶媒として利用したバイオディーゼル燃料の新規低環境負荷製造法

    Nguyen Huynh Phuong Uyen、Pham Thi Phuong Thao、朝田良子、今村 清、 北宅善昭、古田雅一、前田泰昭 61

    以上のように訂正し、ここに謹んでお詫び申し上げます。 Eco-Engineering 誌編集委員会

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