AKAO Satoshi
Faculty of Science and Engineering Department of Environmental Systems Science
Professor
Last Updated :2024/06/18

Researcher Profile and Settings

Research Interests

  • Waste water treatment
  • Waste treatment
  • Water and sewage
  • Anaerobic digestion

Research Areas

  • Social infrastructure (civil Engineering, architecture, disaster prevention) / Civil engineering (environmental systems)
  • Environmental science/Agricultural science / Environmental materials/recycling technology
  • Environmental science/Agricultural science / Environmental load reduction/restoration technology

Research Experience

  • Doshisha University, Faculty of Science and Engineering Department of Environmental Systems Science, Professor, 2022/04 - Today
  • 同志社大学, 理工学部 環境システム学科, 准教授, 2015/04 - 2022/03
  • Tottori University, 工学部社会開発システム工学科, 助教, 2007/04 - 2015/03
  • Tottori University, 助手, 2006/10 - 2007/03

Education

  • 京都大学大学院, 工学研究科, 都市環境工学専攻, 2003/10 - 2006/09
  • 京都大学大学院, 工学研究科, 環境工学専攻, 1997/04 - 1999/03
  • Kyoto University, Faculty of Engineering, 衛生工学科, 1993/04 - 1997/03

Published Papers

  • キトサンを中和剤とするL-乳酸発酵法の開発
    川口竜世; 赤尾聡史
    土木学会論文集, 79(25) 23-25046 , Nov. 2023, Scientific journal
  • Greenhouse gas emissions from agricultural soil amended with kitchen compost of varying ages
    Tran Thi Minh Chau; Takashi Someya; Satoshi Akao; Masato Nakamura; Fumiko Oritate; Hiroaki Somura; Shinzo Yamane; Morihiro Maeda
    Soil Science and Plant Nutrition, Informa UK Limited, 1 - 11, 10 Jan. 2023, Scientific journal
  • Aliphatic Amine Interference in Indophenol Reaction for Ammonia-Nitrogen Determination and Its Possibility as Quantitative Method for Aliphatic Amines
    Satoshi AKAO
    Journal of Japan Society on Water Environment, Japan Society on Water Environment, 46(1) 1 - 9, Jan. 2023, Scientific journal
  • PROPOSAL OF A NEW L-LACTATE PURIFICATION PROCESS USING CHITOSAN
    Satoshi AKAO; Ryuse KAWAGUCHI; Kosuke SASAKI; Masashi TAKADA; Kento TAKEUCHI
    Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research), Japan Society of Civil Engineers, 78(7) III_205 - III_212, Nov. 2022, Scientific journal
  • The effect of soil sample size, for practical DNA extraction, on soil microbial diversity in different taxonomic ranks
    Hiroki Morita; Satoshi Akao
    PLOS ONE, Nov. 2021, Scientific journal
  • Characteristics of organic growing media for hydroponic cultivation prepared from leaves and stalks of eggplant with crudely crushed and soaked in water
    Satoshi Akao; Takahiro Iwasaki
    土木学会論文集G(環境), 77(7) 151 - 160, Nov. 2021, Scientific journal
  • Characterization of effluent water quality from hydroponic cultivation system
    H. Nagare; Y. Nomura; K. Nakanishi; S. Akao; T. Fujiwara
    Journal of Water and Environment Technology, Japan Society on Water Environment, 19(2) 64 - 73, Apr. 2021, Scientific journal
  • 溶媒抽出による作物残渣の有機培地化に関する基礎的検討
    赤尾聡史; 川崎向日葵; 野村洋平; 藤原拓
    土木学会論文集G(環境), 76(7) III_311 - III_318, Dec. 2020, Scientific journal
  • Simultaneous recovery of phosphorus and potassium from biomass as magnesium salt
    Hideaki Nagare; Takumi Iwata; Ayako Ebi; Satoshi Akao; Morihiro Maeda; Daisuke Yasutake; Taku Fujiwara
    Journal of Japan Society of Civil Engineers, Ser.G (Environmental Research), Japan Society of Civil Engineers, 76(7) III_181 - III_187, Dec. 2020, Scientific journal
  • Economic Analysis of Sewage Sludge Composting on Regional Circular Economy Using Municipal Input-output Table
    Satoshi Akao, Takanobu Katsumi, Taku Fujiwara, Ryusei Ito, Kuniaki Takahashi, Taichi Akama
    Journal of Japan Society on Water Environment, 43(3) 63 - 68, May 2020, Scientific journal
  • Effects of a Small-scale Combined Heat and Power Plant’s Operation
    Takanobu Katsumi; Satoshi Akao
    木材工業, 74(5) 182 - 187, May 2019, Scientific journal
  • Nitrogen, phosphorus, and antioxidant contents in crop residues for potential cascade utilization
    Satoshi Akao
    Waste and Biomass Valorization, 9(9) 1535 - 1542, Sep. 2018, Scientific journal
  • Effects of cultivation period on catch crop chemical composition and potential for bioenergy production
    S. Akao; D. Yasutake; K. Kondo; H. Nagare; M. Maeda; T. Fujiwara
    Industrial Crops and Products, Elsevier B.V., 111 787 - 793, 01 Jan. 2018, Scientific journal
  • 大型水生植物からのリン回収
    永禮英明; 渡辺諒; 藤原拓; 赤尾聡史; 前田守弘
    土木学会論文集G(環境), 72(7) Ⅲ_249 - Ⅲ_254, Oct. 2016, Scientific journal
  • Non-sterile simultaneous saccharification and fermentation of corn leaves and stalks to l-lactic acid without external nutrient addition
    Satoshi Akao; Hideaki Nagare; Morihiro Maeda; Keisuke Kondo; Taku Fujiwara
    JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT, SPRINGER, 18(2) 208 - 214, Apr. 2016, Scientific journal
  • Nitrous oxide and carbon dioxide emissions from paddy soil treated with rice husk products at different moisture contents in a short-term experiment
    Thi Kim Thanh HA; Morihiro MAEDA; Taku FUJIWARA; Hideaki NAGARE; Satoshi AKAO; Quoc Thinh TRAN
    Journal of Environmental Science for Sustainable Society, Graduate School of Environmental and Life Science, Okayama University, 7 9 - 15, Mar. 2016, Scientific journal
  • Nitrous oxide emissions during biological soil disinfestation with different organic matter and plastic mulch films in laboratory-scale tests
    Morihiro Maeda; Eisuke Kayano; Taku Fujiwara; Hideaki Nagare; Satoshi Akao
    ENVIRONMENTAL TECHNOLOGY, TAYLOR & FRANCIS LTD, 37(4) 432 - 438, Feb. 2016, Scientific journal
  • Effects of soil type and nitrate concentration on denitrification products (N2O and N-2) under flooded conditions in laboratory microcosms
    Thi Kim Thanh Ha; Morihiro Maeda; Taku Fujiwara; Hideaki Nagare; Satoshi Akao
    SOIL SCIENCE AND PLANT NUTRITION, TAYLOR & FRANCIS LTD, 61(6) 999 - 1004, Nov. 2015, Scientific journal
  • Combined use of sugars and nutrients derived from young maize plants for thermophilic L-lactic acid fermentation
    S. Akao; H. Nagare; M. Maeda; K. Kondo; T. Fujiwara
    INDUSTRIAL CROPS AND PRODUCTS, ELSEVIER SCIENCE BV, 69 440 - 446, Jul. 2015, Scientific journal
  • EVALUATION OF GREENHOUSE GAS EMISSION, NITROGEN LOAD AND BREAK-EVEN POINT OF INTRODUCING LACTATE FERMENTATION AND CATCH CROP SYSTEM
    MASUDA Takanori; MATSUOKA Masayuki; YAMADA Masato; HASE Takahito; AKAO Satoshi; NAGARE Hideaki; FUJIWARA Taku
    PROCEEDINGS OF ENVIRONMENTAL AND SANITARY ENGINEERING RESEARCH, Japan Society of Civil Engineers, 70(7) Ⅲ_483 - Ⅲ_491, Dec. 2014, Scientific journal
  • 応答曲面法による独立型太陽光発電システムの設置コスト最適化
    赤尾聡史; 福永剛士
    土木学会論文集G(環境), 70(6) Ⅱ_217 - Ⅱ_225, Oct. 2014, Scientific journal
  • Utilization of water chestnut for reclamation of water environment and control of cyanobacterial blooms
    Satoshi Akao; Yoshihiko Hosoi; Taku Fujiwara
    ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, SPRINGER HEIDELBERG, 21(3) 2249 - 2255, Feb. 2014, Scientific journal
  • Water Main Failure Rate Prediction under Insufficient Break Information
    HOSOI Yoshihiko; MASUDA Takanori; AKAO Satoshi
    PROCEEDINGS OF ENVIRONMENTAL AND SANITARY ENGINEERING RESEARCH, Japan Society of Civil Engineers, 69(7) Ⅲ_345 - Ⅲ_353, Nov. 2013, Scientific journal
  • Cascade utilization of water chestnut: recovery of phenolics, phosphorus, and sugars
    Satoshi Akao; Koutaro Maeda; Yoshihiko Hosoi; Hideaki Nagare; Morihiro Maeda; Taku Fujiwara
    ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, SPRINGER HEIDELBERG, 20(8) 5373 - 5378, Aug. 2013, Scientific journal
  • Seasonal changes in the performance of a catch crop for mitigating diffuse agricultural pollution
    K. Kondo; K. Inoue; T. Fujiwara; S. Yamane; D. Yasutake; M. Maeda; H. Nagare; S. Akao; K. Ohtoshi
    Water Science and Technology, 68(4) 776 - 782, 2013, Scientific journal
  • Life Extension and Renewal Measures of Sewer Systems in Population Decline Areas
    HOSOI Yoshihiko; MASUDA Takanori; AKAO Satoshi; NADA Hideki; TAKADA Daisuke
    PROCEEDINGS OF ENVIRONMENTAL AND SANITARY ENGINEERING RESEARCH, Japan Society of Civil Engineers, 68(7) III_681 - III_690, Nov. 2012, Scientific journal
  • Reduction of Nutrient Leaching Losses by using a Catch Crop during a Fallow Period following Eggplant Production in a Greenhouse
    MAEDA Morihiro; NAKASONE Yasuhiro; OKAMOTO Takashi; ASANO Yuichi; FUJIWARA Taku; NAGARE Hideaki; AKAO Satoshi
    PROCEEDINGS OF ENVIRONMENTAL AND SANITARY ENGINEERING RESEARCH, Japan Society of Civil Engineers, 68(7) III_103 - III_111, Nov. 2012, Scientific journal
  • Nutrient recovery from biomass cultivated as catch crop for removing accumulated fertilizer in farm soil
    H. Nagare; T. Fujiwara; T. Inoue; S. Akao; K. Inoue; M. Maeda; S. Yamane; M. Takaoka; K. Oshita; X. Sun
    WATER SCIENCE AND TECHNOLOGY, IWA PUBLISHING, 66(5) 1110 - 1116, 2012, Scientific journal
  • Comparison of simultaneous and separate processes: saccharification and thermophilic L-lactate fermentation of catch crop and aquatic plant biomass
    Satoshi Akao; Koutaro Maeda; Shingo Nakatani; Yoshihiko Hosoi; Hideaki Nagare; Morihiro Maeda; Taku Fujiwara
    ENVIRONMENTAL TECHNOLOGY, TAYLOR & FRANCIS LTD, 33(13) 1523 - 1529, 2012, Scientific journal
  • 回収・再資源化を目的としたバイオマスからの元素抽出
    永禮英明; 藤原拓; 赤尾聡史; 前田守弘; 山根信三
    土木学会論文集G(環境), 67(7) Ⅲ461 - Ⅲ466, Nov. 2011, Scientific journal
  • 笠岡湾干拓地における水質汚濁現状と安定同位体自然存在比を用いた汚濁機構解析
    前田守弘; 浅野裕一; 兵藤不二夫; 中島泰弘; 藤原拓; 永禮英明; 赤尾聡史
    土木学会論文集G(環境), 67(7) Ⅲ213 - Ⅲ221, Nov. 2011, Scientific journal
  • 人口減少後社会への移行過程における下水道事業経営と地域及び世代間負担
    細井由彦; 灘英樹; 増田貴則; 赤尾聡史
    土木学会論文集G(環境), 67(7) Ⅲ577 - Ⅲ585, Nov. 2011, Scientific journal
  • ソフトバイオマスを原料とした酵素糖化における各種前処理の糖化効率比較
    前田光太郎; 赤尾聡史; 細井由彦; 永禮英明; 前田守弘; 藤原拓
    土木学会論文集G(環境)Ⅲ, 67(7) 433 - 440, Nov. 2011
  • クリーニングクロップ栽培と湛水の組み合わせによるハウス土壌集積塩類の除去特性
    井上賢大; 近藤圭介; 藤原拓; 前田守弘; 高岡昌輝; 大年邦雄; 山根信三; 永禮英明; 赤尾聡史
    環境工学研究論文集, 47 273 - 280, Nov. 2010, Scientific journal
  • トウモロコシからのリン抽出方法の検討
    永禮英明; 井上司; 藤原拓; 赤尾聡史; 前田守弘; 山根信三
    環境工学研究論文集, 47 459 - 464, Nov. 2010, Scientific journal
  • 水利用機能を考慮した人口減少社会における下水道管路の耐震化
    細井由彦; 上地進; 増田貴則; 赤尾聡史
    環境工学研究論文集, 47 305 - 314, Nov. 2010, Scientific journal
  • 生ごみを用いた非滅菌高温L-乳酸発酵におけるD-乳酸生成が起こり得る時期と関与する菌種
    榮祐介; 赤尾聡史; 前田光太郎; 細井由彦
    環境工学研究論文集, 47 585 - 593, Nov. 2010
  • Kinetic model of thermophilic L-lactate fermentation by Bacillus coagulans combined with real-time PCR quantification
    T. Hidaka; T. Horie; S. Akao; H. Tsuno
    WATER RESEARCH, PERGAMON-ELSEVIER SCIENCE LTD, 44(8) 2554 - 2562, Apr. 2010, Scientific journal
  • 財政と住民便益から見た人口減少下における下水道整備の検討
    灘英樹; 細井由彦; 増田貴則; 赤尾聡史
    下水道協会誌, 47(573) 135 - 144, 2010, Scientific journal
  • 公共財の供給を含む一般会計を考慮した人口減少高齢化社会における下水道事業経営
    細井由彦; 灘英樹; 増田貴則; 赤尾聡史
    環境工学研究論文集, 46 165 - 174, Nov. 2009, Scientific journal
  • 人口減少高齢化構造からみた一般行政サービスの受益と負担を考慮した汚水処理事業経営
    細井由彦; 増田貴則; 赤尾聡史; 麻本裕也
    環境システム研究論文集, 37 145 - 152, Sep. 2009, Scientific journal
  • Chemical Composition Analysis of Kitchen Wastes and its Utilization for Thermophilic L-Lactate Fermentation
    AKAO Satoshi; SAKAE Yusuke; IWASAKI Youji; MONGI Hideyuki
    Doboku Gakkai Ronbunshuu G, Japan Society of Civil Engineers, 45 451 - 458, Nov. 2008
  • Fermentation for different type of L-lactate and synthesis of polylactate
    TSUNO Hiroshi; AKAO Satoshi; MIYAI Kotaro; HIDAKA Taira; HORIE Taku
    Doboku Gakkai Ronbunshuu G, Japan Society of Civil Engineers, 44 471 - 479, Nov. 2007, Scientific journal
  • Effects of pH and temperature on products and bacterial community in-lactate batch fermentation of garbage under unsterile condition
    S. Akao; H. Tsuno; T. Horie; S. Mori
    WATER RESEARCH, PERGAMON-ELSEVIER SCIENCE LTD, 41(12) 2636 - 2642, Jun. 2007, Scientific journal
  • Semi-continuous L-lactate fermentation of garbage without sterile condition and analysis of the microbial structure
    S. Akao; H. Tsuno; J. Cheon
    WATER RESEARCH, PERGAMON-ELSEVIER SCIENCE LTD, 41(8) 1774 - 1780, Apr. 2007, Scientific journal
  • 非滅菌模擬生ごみを原料とする高温L-乳酸発酵の半連続式培養への適用
    赤尾聡史; 津野洋; 堀江匠
    土木学会論文集G, 63(1) 68 - 76, Mar. 2007, Scientific journal
  • Effects of pH and temperature on unsterile thermophilic fermentation with L-lactate cultured broth inoculum
    AKAO Satoshi; TSUNO Hiroshi; HORIE Taku
    Doboku Gakkai Ronbunshuu G, Japan Society of Civil Engineers, 43 39 - 46, Nov. 2006, Scientific journal
  • Production of L-Lactic Acid from Unsterilized Garbage in Semicontinuous Culture
    AKAO Satosi; TSUNO Hiroshi
    Doboku Gakkai Ronbunshuu G, Japan Society of Civil Engineers, 42 39 - 46, Dec. 2005, Scientific journal
  • Modelling of water quality and quantity variations in a rural small area and its application
    Shigeo Fujii; Isao Somiya; Naoyuki Kishimoto; Satoshi Akao; Makoto Yoshihara
    Advances in Asian Environmental Engineering, 1(1) 54 - 62, Jun. 2001, Scientific journal

MISC

  • Crop Residue Utilization: Production of Growing Media and Recovery of Metals
    赤尾聡史; 高岡昌輝; OLESZEK Sylwia
    日本水環境学会シンポジウム講演集, 24th, 2021
  • Economic analysis for crop residue utilization in rural area using extended Input-Output table
    Satoshi Akao; Takanobu Katsumi
    The 11th International Conference in Challenges in Environmental Science & Engineering Conference, 109 , Nov. 2018, Summary international conference
  • 小地域産業連関表を用いた木質バイオマス利用事業の評価
    赤尾聡史; 勝見公敦
    同志社大学ハリス理化学研究報告, 58(4) 175 - 186, Jan. 2018, Report research institution
  • Antioxidant potential for nutrition in crop residues. International Water Association
    Satoshi Akao
    The 2nd International Resource Recovery Conference, 159 - 162, Aug. 2017, Summary international conference
  • Economic Analysis for Photovoltaic Power Businesses in Rural Area Using Regional Input-Output Table
    Akao Satoshi; Kakutani Miyu
    同志社大学ハリス理化学研究報告, Alternative:Harris Science Research Institute of Doshisha University, 58(2) 96 - 102, Jul. 2017, Report research institution
  • 1-1-4 Nitrous oxide production in paddy soil under different irrigation regimes of water with high nitrate concentration
    Thanh Ha Thi Kim; Maeda Morihiro; Fujiwara Taku; Nagare Hideaki; Akao Satoshi
    Abstracts of the meeting, the Society of the Science of Soil and Manure, Japanese Society of Soil Science and Plant Nutrition, (60) 2 - 2, 09 Sep. 2014
  • P1-1-23 Environmental factors controlling nitrous oxide production and nitrate removal under flooded soil conditions
    Ha Thi Kirn Thanh; Maeda Morihiro; Fujiwara Taku; Tsutsui Hirofumi; Nagare Hideaki; Akao Satoshi
    Abstracts of the meeting, the Society of the Science of Soil and Manure, Japanese Society of Soil Science and Plant Nutrition, (59) 17 - 17, 11 Sep. 2013
  • Utilization of nutrients extracted from plant biomass in thermophilic L-lactic acid fermentation
    Satoshi Akao; Hideaki Nagare; Morihiro Maeda; Yoshihiko Hosoi; Taku Fujiwara
    Proceedings of 13th World Congress on Anaerobic Digestion, Jun. 2013, Summary international conference
  • Non-sterile thermophilic L-lactic acid fermentation of food waste
    Satoshi Akao
    Journal of the Environment, 9(1) 7 - 13, Jan. 2013, Report scientific journal
  • Catch crop cultivation for diffuse agricultural pollution control and resource recovery
    Fujiwara T; Kondo K; Inoue K; Yamane S; Maeda M; Nagare H; Akao S; Takaoka M; Ohtoshi K
    The 4th CESE Conference,Tainan City,Taiwan, 2011, Summary international conference
  • Nutrient Recovery from Biomass Cultivated as Catch Crop for Removing Accumulated Fertilizer in Farm Soil
    Nagare H; Fujiwara T; Inoue T; Akao S; Inoue K; Takaoka M; Oshita K; Sun X
    Proceedings of the 8th IWA International Symposium on Waste Management Problems in Agro-Industries, 147 - 152, 2011, Summary international conference
  • Fermentation of Lignocellulosic Biomass Derived Sugars to L-Lactate by Thermophilic Bacillus coagulans
    Satoshi Akao; Yusuke Sakae; Yoshihiko Hosoi; Hideaki Nagare; Morihiro Maeda; Taku Fujiwara
    Proceedings of 12th World Congress on Anaerobic Digestion, Nov. 2010, Summary international conference
  • Simultaneous Saccharification and L-Lactate e Fermentation of an Aquatic Plant (Trapa) under Unsterile Condition by Bacillus coagulans JCM 2258
    Satoshi Akao; Yusuke Sakae; Shingo Nakatani; Yoshihiko Hosoi; Taku Fujiwara
    Proceedings of IWA World Water Congress and Exhibition, Sep. 2010, Summary international conference
  • The influence of pH and temperature on products in L-lactate batch fermentation of garbage without sterile condition
    Satoshi Akao; Hiroshi Tsuno; Takumi Horie; Shuichi Mori
    Proceedings of the 15th Joint KAIST-KYOTO-NTU-NUS Symposium on Environmental Engineering, 94 - 100, Jun. 2006, Summary international conference
  • Production of L-lactic acid from garbage by thermophilic fermentation
    Satoshi Akao; Hiroshi Tsuno
    Proceedings of the 14th Joint KAIST-KYOTO-NTU-NUS Symposium on Environmental Engineering, 41 - 47, Jun. 2005, Summary international conference

Research Projects

  • Development of sediment microbial fuel cells for improvement of water quality and reduction in greenhouse gas emissions in agricultural drainage canals
    前田 守弘; 仁科 勇太; 赤尾 聡史; 諸泉 利嗣
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2022/04 -2025/03, Grant-in-Aid for Scientific Research (B), Okayama University
  • Proposal of regionally available biomass waste compost with useful functions and less environmental impacts based on scientific evaluation of local and indigenous knowledge in Vietnam
    前田 守弘; 染谷 孝; 赤尾 聡史; 中村 真人; 折立 文子
    ベトナムでは家畜ふんの堆肥化に嫌気発酵が用いられており,日本の好気性堆肥と性質が全く異なる.本研究の目的は,嫌気性堆肥と好気性堆肥の機能性および環境負荷を比較することで,嫌気性堆肥の利点と欠点を明らかにし,両堆肥の特性を活かしたバイオマス活用堆肥を提案することである. 本年度は,新型コロナ感染症の影響で渡航できなかったため,4回のオンライン会議を行い,日本国内で嫌気・好気性堆肥を試作するとともに,ベトナム堆肥を輸入した. 嫌気性堆肥が一般的になった背景・理由の解明については,ベトナム研究者と共同でオンライン調査を実施し,9農家から聞き取り調査を行うとともに,嫌気堆肥を日本に送付し,分析を行った.堆肥化過程における環境負荷については,現地の堆肥化過程(微生物資材を添加)を模して,生ごみの堆肥化試験を行ったところ,乳酸菌を添加した場合,試験開始1週間程度のN2O発生量が少なかった.堆肥施用畑における環境負荷については,生ゴミ堆肥を施設畑土壌に施用し,非生物的なCO2およびCH4発生の温度依存性(20-35℃)について検討した.その結果,非生物的なCO2およびCH4発生はともに高温で上昇し,CH4については生物的発生量と同程度であることなどがわかった.堆肥の衛生状態および病害菌拮抗作用に関しては,ピシウムに対する拮抗菌の直接選択培養法の検討を行い,培地の寒天濃度および菌密度の最適条件等を実験的に解明した.ベトナムから送付された嫌気堆肥の大腸菌等衛生指標菌ならびに拮抗菌の含有密度などを定量した.微生物叢に与える影響の解明に関しては,環境条件と細菌叢の関連性の検討および細菌叢から予測される機能解析を実施した.園芸土と下水汚泥堆肥の混合により,窒素循環に関わる細菌叢の変化,菌叢の変化と硝酸濃度の関連性,予測される窒素循環に関わる細菌機能の変遷を示した., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2020/10 -2024/03, Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)), Okayama University
  • Advanced Next-Generation Greenhouse Horticulture by IoP (Internet of Plants)
    2018/10 -2023/03
  • Development of a new L-lactate purification process via chitosan lactate
    Akao Satoshi
    Optically pure lactate is a raw material for biodegradable polylactic resin. Such lactate is produced by fermentation, and lactate purification from cultivation broth remains a critical issue for reducing the production cost of polylactic resin. Crystallization of calcium lactate is a popular process for its purification; however, the process requires condensed calcium lactate solution, and calcium sulfate is produced as waste in the final step for liberation of lactic acid. This study investigated the purification process via chitosan lactate. Chitosan l-lactate was made using chitosan as a neutralizer in lactate fermentation. Anti-solvent crystallization was applied to recover chitosan lactate, and acetone was worked as an anti-solvent to precipitate lactate chitosan. Finally, ammonium lactate and chitosan were obtained separately by adding chitosan lactate into aqueous ammonia. The recovery ratio of lactate and chitosan was almost 100% when using high molecular chitosan., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2019/04 -2022/03, Grant-in-Aid for Scientific Research (C), Doshisha University
  • The Sanitation Value Chain: Designing Sanitation Systems as Eco-Community-Value System
    Research Institute for Humanity and Nature, Research Project, 2015/04 -2022/03, Coinvestigator not use grants, Research Institute for Humanity and Nature
  • Development of depopulated regional infrastructure development strategy and its evaluation method based on "larger circulation from a small local community" concept
    TSUCHIYA Satoshi
    For Kaso area (the area where the population is declining and aging) to be sustainable, it is essential to establish an economic foundation and a welfare service supply foundation. Based on this, our research project aimed at "a large regional circulation centered on a small local community". We grasped the problem from two perspectives: the socio-economic effects of energy local production for local consumption, and the possibility of providing integrated services by mobile service providers. Specifically, the former focused on a small-scale energy production business that uses biomass (local production for local consumption), and the latter focused on the possibility of a taxi company or a postal collection and delivery business to travel between settlements during the main business. We developed a quantitative method to evaluate the feasibility and evaluated it through a case study., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2017/04 -2020/03, Grant-in-Aid for Scientific Research (C), Tottori University
  • Antioxidant activities, phenolics, and carotenoids in emerging crop residues by plant factories
    Akao Satoshi
    Developing plant factory industry will require disposal of its agricultural organic wastes. The waste disposal cost was estimated to account for about 10% of their gross profit at one cycle in the case of 100 m2 scale of greenhouse horticulture. Component analysis was conducted to utilize agricultural wastes. The wastes were high in minerals including phosphorus and carotenoids such as lutein, indicating that the wastes could be used as one of carotenoids sources for a food and/or feed preservative and fertilizer after carotenoids extraction. Carbon nitrogen ratios in the wastes were generally low, in other words, they were high in proteins. Ammonia inhibition should be in mind in bio-chemical transformations such as methane fermentation., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2013/04 -2016/03, Grant-in-Aid for Scientific Research (C)
  • 有機性廃棄物からのL-乳酸生成
    受託研究, 2009 -2014, Competitive research funding
  • Fundamental studies on degradation of phorbol esters isolated from Jatropha curcas L.
    AKAO Satoshi
    Plantation of Jatropha has been planning for biodiesel fuelproduction. Jatropha contains toxic phorbol esters, therefore, their impact on environment with increasing the production should be considered. In this study, degradations of phorbol esters under natural circumstances were investigated. Treatment by soil bacteria and lighting by plant growth fluorescent lamp resulted in first-order degradation of phorbol esters. Further, hydrolysis by sodium hydroxide provided theirrapid decomposition., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), 2011 -2012, Grant-in-Aid for Young Scientists (B), Tottori University
  • Development of a novel system consisting of catch crop cultivation and L-lactate fermentation of harvested biomass for nitrate groundwater pollution control and resource recovery
    FUJIWARA Taku; OHTOSHI Kunio; MAEDA Morihiro; AKAO Satoshi; NAGARE Hideaki
    Catch crop cultivation followed by flood irrigation simultaneously realized the reduction of nitrogen leaching and removal of salts accumulated in the topsoil of greenhouse horticulture. Polysaccharides in the corn biomass cultivated as a catch crop was easily hydrolyzed, and the L-lactate fermentation using sugars derived from the biomass was demonstrated. Around 80% of phosphorus in the corn biomass was recovered by soaking powdered biomass in distilled water and calcium addition to the extract. These results demonstrated that the proposed system was effective for the prevention of nitrate groundwater pollution and resource recovery., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2009 -2011, Grant-in-Aid for Scientific Research (B), Kochi University
  • L-Lactate fermentation of organic wastes by Bacillus coagulans for utilization as livestock feed
    AKAO Satoshi
    Thermophilic L-lactic acid fermentation was conducted to utilize organic wastes as livestock feed. The aims are to preserve feed quality by fermented lactic acid and to accelerate feed digestion by partial hydrolysis in the fermentation. 6% of lactic acid prevented proliferation of bacteria consuming lactic acid; this concentration might be an indication for quality preservation of the fermented products. Thermophilic L-lactic acid fermentation partially hydrolyzed soy bean and jatropha proteins. The fermentation might provide easy digestion and absorption like natto's effect. PCR-DGGE analysis of the fermentation of kitchen wastes indicated that Bacillus coagulans as inoculum and some bacteria including lactic acid bacteria were detected. Hazard assessment of detected bacteria will be next challenges., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), 2009 -2010, Grant-in-Aid for Young Scientists (B), Tottori University
  • Thermophilic L-lactate fermentation of agricultural wastes
    AKAO Satoshi
    循環型社会の実現に向けて有機性廃棄物の利用が求められている.本研究では,稲わらなどの農業廃棄物に対して滅菌を必要としないL-乳酸発酵(高温L-乳酸発酵,Bacillus coagulans)の適用を目指しており,同発酵が農業廃棄物を構成する糖質(ヘキソース,ペントース)からL-乳酸を生成できることを示した.また,農業廃棄物の糖化液から実際に非滅菌下でL-乳酸を生成した.高温L-乳酸発酵により増殖する菌体の有効利用方法として生菌剤化も検討した.生菌剤化プロセスに必要と考えられる乾燥工程の温度・時間条件(生存条件)を探索し,80oC で2 時間の乾燥により概ね生存率10-2 が得られることを確認した., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (Start-up), 2007 -2008, Grant-in-Aid for Young Scientists (Start-up), Tottori University