Updated on 2025/07/14

写真b

KAWAKAMI Shotaro

Associate Professor

Title

Associate Professor

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From Graduate School 【 display / non-display

  • Tokyo University of Agriculture   Graduate School, Division of Agriculture   Master Course   Completed

    1990.04 - 1992.03

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    Country:Japan

Degree 【 display / non-display

  • Agricultural Engineering ( 2013.10   Tokyo University of Agriculture )

  • 修士(農業工学) ( 1992.03   東京農業大学 )

Employment Record in Research 【 display / non-display

  • Tokyo University of Agriculture

    1992.04 - 1993.03

  • 東京農業大学   農学部農業工学科   副手(有給)

    1993.04 - 1994.03

  • 東京農業大学   農学部農業工学科   助手

    1994.04 - 1998.03

  • Tokyo University of Agriculture   Faculty of Regional Environment Science   Department of Bioproduction and Environment Engineering   Research Assistant

    1998.04 - 1999.09

  • Tokyo University of Agriculture   Faculty of Regional Environment Science   Department of Bioproduction and Environment Engineering   Lecturer

    1999.10 - 2014.03

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Professional Memberships 【 display / non-display

  • The Japanese Agricultural Education Society

    2014.04

  • Japanese Society of Agricultural Technology Management

    2005.04

  • Japanese Society of Taste Technology

    2002.04

  • The Japanese Society for Horticultural Science

    1999.04

  • The Society of Agricultural Structures

    1992.09

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Research Areas 【 display / non-display

  • Environmental Science/Agriculture Science / Agricultural environmental engineering and agricultural information engineering

  • Life Science / Food sciences

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Measurement engineering

Papers 【 display / non-display

  • Effects of LED Lighting and Media on Vitamin C and Phenol Content in Ethiopian Kale (<i>Brassica carinata</i>) Microgreens

    MARU RUTH, WESONGA JOHN, MAZIBUKO DICKSON, AKIYAMA SATOKO, SEKIYAMA AYAKO, KAWAKAMI SHOTARO, MASKEY SARVESH, KAVOO AGNES, NEONDO JOHNSTONE, OKAZAWA HIROMU

    International Journal of Environmental and Rural Development   15 ( 2 )   151 - 156   2024

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    Language:English   Publisher:Institute of Environmental Rehabilitation and Conservation, Research Center  

    <p>Microgreens are innovative vegetable products related to their novelty and health-promoting benefits. However, growth media and light conditions affect microgreens’ nutritional content, which may limit their production in rural community settings. <i>Brassica carinata</i> is an essential local Kenyan vegetable, but its production and full utilization are limited by its early maturity. The potential of using <i>B. carinata</i> as a microgreen would be an excellent alternative production technique to minimize its early maturity limitation. This study investigated the influence of white and blue light on Vitamin C and phenol content in <i>B. carinata</i> microgreens grown using sand and cocopeat. <i>B. carinata</i> microgreens were grown for 14 days in a growth chamber using plastic punnet containers filled with cocopeat and sand under white and blue light. The capillary wick watering technique was used for irrigation. Temperature and relative humidity were monitored and maintained at 26°C± 2, and 60%, respectively. The photoperiod and intensity of light were also maintained at 12 hr and 160 ± 2.5 µmol m<sup>−2</sup>s<sup>−1</sup>) respectively. After 14 days, microgreens were harvested and freeze-dried to analyze Vitamin C and phenol content. And. Data was subjected to ANOVA and was separated by Tukey’s multiple comparison test. Results indicated that light had no significant effect on <i>B. carinata</i> microgreens phenol content. However, microgreens grown in locally available sand showed statistically higher amounts of phenol content than those grown using cocopeat. For vitamin C content, media and light had no significant effect. Our results show that sand medium can be used equally to produce microgreens with higher phenol content for <i>Brassica carinata.</i></p>

    DOI: 10.32115/ijerd.15.2_151

  • Improvements in Preservation Properties of Homemade-Style Pickled Cucumber in Cambodia

    SORM SOKLY, MURAMATSU SHUKI, UCHINO MASATAKA, MURAMATSU YOSHIKI, OKA DAIKI, TOUCH NARONG, TANIOKA YURI, NAKAMURA TAKAHIKO, NAKAJIMA TORU, SEKIDO MOTOE, KAWAKAMI SHOTARO, CHAY CHIM, ARIMITSU MARI, MIHARA MACHITO

    International Journal of Environmental and Rural Development   14 ( 1 )   25 - 31   2023

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    Language:English   Publisher:Institute of Environmental Rehabilitation and Conservation, Research Center  

    <p>Pickled cucumbers selling at wet markets in Cambodia are popular among local people. It has been reported that pickles using homemade recipes are at a high risk of spoiling and causing food poisoning, as there are no heating steps in the production process. Therefore, it is necessary to improve the hygienic conditions of the food supply to make safe pickles in Cambodia. Heat treatments using hot pack filling and pasteurization lead to microbiologically safe products and extended shelf life. This study aimed to examine the effect of heat treatments (hot pack filling and pasteurization) on preservative properties and to evaluate the acceptability of the pickled cucumbers prepared with the heating process. Pickled cucumbers prepared with and without the heating process were made using a traditional Cambodian recipe and stored at 30 °C for 7 days. The presence of total viable bacteria, coliforms, <i>Escherichia coli</i>, yeasts, and molds in the pickled products was tested during the storage periods. The samples without the heating process resulted in contamination with coliforms,<i> E. coli</i>, yeasts, and molds and were in an initial putrefactive state because of the number of total viable bacteria. On the other hand, coliforms, <i>E. coli</i>, yeasts, and molds were not detected in the samples prepared with the heating process from Day 0 to Day 7. This result indicated that the pasteurization treatment killed many spoilage microbes, including foodborne pathogens. To investigate the acceptability of the pickled cucumbers prepared with the heating process, sensory evaluation tests were performed. From the results of the sensory evaluation and questionnaire survey, there was the possibility of acceptance of the pickled cucumbers prepared with the heating process made either in Japan or Cambodia by the Cambodian panelists; however, further improvement in the softness of the pickles was commented upon.</p>

    DOI: 10.32115/ijerd.14.1_25

  • Moisture Content Prediction of Dried Young Papaya during Drying and Water Absorption Reviewed

    SOKLY SORM , YOSHIKI MURAMATSU , MASANORI HASHIGUCHI , DAHAI MI , EIICHIRO SAKAGUCHI , SHOTARO KAWAKAMI

    International Journal of Environmental and Rural Development   13 ( 1 )   26 - 33   2022.01

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    Language:English  

  • Moisture Content Prediction of Dried Young Papaya during Drying and Water Absorption

    SORM SOKLY, MURAMATSU YOSHIKI, HASHIGUCHI MASANORI, MI DAHAI, SAKAGUCHI EIICHIRO, KAWAKAMI SHOTARO

    International Journal of Environmental and Rural Development   13 ( 1 )   26 - 33   2022

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    Language:English   Publisher:Institute of Environmental Rehabilitation and Conservation, Research Center  

    <p>The effective use of agricultural products and the development of processed foods with guaranteed safety and quality are needed in Kampong Cham Province, Cambodia. Young papaya is an important agricultural product in this area. Dried young papaya is one of the preserved foods. The main objective in this paper was to provide basic information for the optimization of drying process. Two types of young papaya, raw or fresh papaya and blanched young papaya, were used in this study to investigate the influence of drying pretreatment that is, blanching, on the changes in the moisture content during drying and water absorption. The hot air-drying characteristics of each sample were measured at three temperatures (30, 50, and 70°C), three air velocities (1, 2, and 3 m/s), and a relative humidity of 40%. The examination of the effects of temperature, air velocity, and blanching on the drying of samples resulted in the drying characteristics of the raw sample being very similar to that of the blanched sample. A linear relationship existed in the moisture content range between the initial moisture contents and 500% (d.b.). The exponential model was applied to predict the changes in the moisture contents of samples below500% (d.b.) at each drying condition. The drying rate constants in the period above or below500% (d.b.) were increased with increasing air temperature and air velocity and expressed as a linear function of both temperature and air velocity, respectively. The water absorption characteristics of the dried young papaya and the dried blanched young papaya that were dried after blanching were investigated at three temperatures (20, 30, and 40°C). Blanching before drying of the sample had the effect of slowing the water absorption rate. The water absorption rate constant tended to increase with increasing soaking temperature.</p>

    DOI: 10.32115/ijerd.13.1_26

  • Proposal of New Pickles to Improve Food Sanitation at Wet Markets in Cambodia

    SORM SOKLY, MURAMATSU YOSHIKI, OKA DAIKI, TANIOKA YURI, UCHINO MASATAKA, MURAMATSU SHUKI, SEKIDO MOTOE, NAKAMURA TAKAHIKO, NAKAJIMA TORU, SAKAGUCHI EIICHIRO, KAWAKAMI SHOTARO, ARIMITSU MARI, MIHARA MACHITO

    International Journal of Environmental and Rural Development   13 ( 2 )   32 - 37   2022

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    Language:English   Publisher:Institute of Environmental Rehabilitation and Conservation, Research Center  

    <p>The lack of heat treatment is one possible factor leading to highly contaminated pickles with microbes, including the bacteria that cause food poisoning. A heating process that sterilizes food products is effective in reducing the microbial content of pickles. We applied heat treatments to ensure that homemade pickles were safe to consume. In this study, 2 kinds of pickled young papaya were made to develop a new, safe processed food that effectively utilizes agricultural products. The objective was to evaluate the possibility of acceptance of these samples in Cambodia and other Asian countries. The sensory evaluation indicated that the samples were acceptable but still need further improvement.</p>

    DOI: 10.32115/ijerd.13.2_32

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Books and Other Publications 【 display / non-display

  • Handbook of Agricultural Machinery and Food Engineers

    The Japanese Society of Agricultural Machinery and Food Engineers( Role: Contributor)

    The Japanese Society of Agricultural Machinery and Food Engineers  2020.04  ( ISBN:978-4-339-05267-1

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    Total pages:3   Responsible for pages:p2269-271   Language:Japanese   Book type:Scholarly book

  • はかる つくる えがく・そだてる 緑の地域を育む―地域環境科学がわかる本

    東京農業大学地域環境科学部教員一同( Role: Joint author ,  目指すのはとれたての新鮮さ 農産物の品質・鮮度を数値化)

    東京農業大学出版会  2015.07  ( ISBN:978-4-88694-450-4

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    Language:Japanese   Book type:General book, introductory book for general audience

    近赤外分光法によるアスパラガスの非破壊水分測定法,米の食味測定、力学特性による切り花の萎れの評価法などを解説した。

  • 農産食品プロセス工学

    豊田淨彦,内野敏剛,北村豊他( Role: Joint author ,  食の安全)

    文永堂出版株式会社  2015.02  ( ISBN:978-4-8300-4128-0

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    Language:Japanese   Book type:Textbook, survey, introduction

    収穫以降の食料の一次加工に加え、成分や相の変化を伴う高次の食品加工を対象とし、それらの領域での一連の単位操作からなる技術体系として位置づけられる。従来、収穫後の操作はポストハーベスト工学において、一方、食品を対象とした操作は食品工学において、それぞれ扱われてきたが、フードチェーンの確立に伴い、生産から消費までの連携した加工処理が求められている。特に、食の安全性の確保のため、原材料の生産から食品の消費に至るまでの切れ目のない衛生管理は重要とされている。この視点から本書は、農産物,食品の加工に関する単位操作と食の安全確保に関する内容を一冊にまとめた。

  • 里山の自然とくらし 福島県鮫川村

    東京農業大学短期大学部生活科学研究所編( Role: Joint author ,  5-2谷戸田のおコメの美味しさをはかる)

    東京農業大学短期大学部生活科学研究所  2012.03  ( ISBN:978-4-88694-404-7

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    Language:Japanese   Book type:General book, introductory book for general audience

  • Food,Agriculture and Resources: Eco-Technology in the Environmental Age

    ( Role: Joint author)

    2010.10  ( ISBN:978-4-320-05707-4

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    Language:Japanese   Book type:General book, introductory book for general audience

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Misc 【 display / non-display

  • 乾式および湿式輸送が切り花の流通過程での品質・鮮度に与える影響

    川上 昭太郎

    平成16-17年度科学研究費補助金(基盤研究(C))研究成果報告書   2006.03

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (other)  

    切り花の流通過程における品質・鮮度の影響を明らかにするためヒマワリ切り花を乾式および湿式輸送モデルを用いて水分、水揚げ等に与える影響を比較した。48時間程度の輸送時間であれば水揚げ後には大きな差はなかった。また、電解水を輸送中の活け水としてバラ切り花の鮮度保持に与える影響について実験を行った。本実験では、強酸性水を用いた時に茎の褐変などが見られたが、微酸性水では鮮度保持効果が見られた。強酸性水についてさらに実験をする必要があることを確認した。

  • 東南アジアにおける農業機械設計概念の特質に関する調査研究

    小池正之,堀尾尚志,牛島史彦,眞板秀二,瀧川具弘,川上昭太郎

    平成15-17年度科学研究費補助金(基盤研究(A))研究成果報告書   2006.03

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    Authorship:Lead author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (other)  

    東南アジアの農業現場における農業機械化について、フィリピンとタイの農村集落を調査地と定め、こられ特定の集落で採り行われている農法を観察して資料収集を行い、農業機械設計概念の枠組みにおいて、当該技術体系の内在する固有の民俗学的・工学的特性等につき学際的観点から分析を進めた。現地調査の結果より担当した精米技術については必ずしも長粒種米に適した研削式精米機が使われるとは限らず、メンテナンスのし易さから摩擦式精米機が使われる場合があることが分かった。

  • 食料の生産・流通・消費空間における安全性確保に関する調査研究 ―農畜産施設におけるHACCP導入支援技術の開発を目指して―

    豊田淨彦,伊藤和彦,川上昭太郎,北村 豊,ツェンコヴァ ルミアナ,中野和弘,守田和夫

    平成13年度科学研究費補助金(基盤研究C(1))企画調査研究研究成果報告書   2002.03

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    Authorship:Lead author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (other)  

    食料の生産・流通・消費空間を対象に、安全性の確保に必要なGAPsを含む衛生管理技術について国内外の状況を調査分析し、問題点と今後の開発の必要な技術を明らかにすることを試みた。その中で、青果物流通過程の現状として長野県川上村での高原野菜の生産・出荷の現状と東京都中央卸売市場大田市場および世田谷市場の現地調査を行った。

  • 果菜類の品質評価に関する研究

    梅田重夫,坂口栄一郎,川上昭太郎

    平成5年度科学研究費補助金(一般研究(B))研究報告書   1994.04

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    Authorship:Lead author   Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (other)  

    本研究は、マスクメロンの品質を非破壊的に計測し、評価する方法を確立するために行った。ネットパターンの構造についてはフラクタル性が認められた。表面色については、等級による差が認められた。打音による熟度判定については硬度との関係が明白となり等級との関係は認められなかったが熟度判定の一手段となることを確認した。近赤外分光法による糖度、熟度の推定もその可能性が認められたが精度は不十分であるため今後の検討が必要となった。

Presentations 【 display / non-display

  • バラ切り花の非破壊品質測定法の検討 ―茎の力学特性による水分測定―

    川上昭太郎,村松良樹,坂口栄一郎

    農業生産技術管理学会平成24年度大会  2012.10  農業生産技術管理学会

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    Event date: 2012.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:鹿児島大学  

    流通過程での切り花の評価方法として、萎れに着目し非破壊で水分を測定することを目的として実験を行った。その結果、バラ切り花の茎の曲げ荷重および平均茎径を用いて非破壊水分測定の可能性が示唆された。

  • 流通過程におけるバラ切り花の水分推定法について―破壊計測による茎の力学特性と水分の関係―

    川上昭太郎,坂口栄一郎

    農業生産技術管理学会誌第16巻別冊1(於東京農業大学)  2009.09  農業生産技術管理学会

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    Event date: 2009.09

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京農業大学  

    バラ切り花を試料とし、流通中の品質変化の評価を非破壊で行う方法として茎の力学的要因に着目し、まず、破壊測定により力学特性と水分の関係を明らかにすることを目的とした。その結果、破壊測定により茎の水分を力学特性より推測することの可能性を得ることができた。

  • 流通過程におけるバラ切り花の水分推定方法について―茎の力学特性と水分の関係―

    川上昭太郎,坂口栄一郎

    農業環境工学関連学会2009年合同大会要旨集(於東京大学)  2009.09  農業環境工学関連学会

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    Event date: 2009.09

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京大学  

    バラ切り花を試料とし茎を切り取り破壊測定を行い力学特性と水分の関係を明らかにすることを目的として実験を行った。その結果、曲げ荷重と水分の関係を求め、茎の水分が減少し萎れることにより曲げ荷重が小さくなり、その関係を2次式で求めることができた。

  • バラ切り花の水収支と品質の変動特性

    和氣佳美,川上昭太郎,坂口栄一郎

    農業機械学会関東支部第44回年次大会講演要旨集(於富山県立大学)  2008.08  農業機械学会関東支部

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    Event date: 2008.08

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:富山県立大学  

    良好なバラ切り花について、飽差,水欠差,吸水速度および蒸発速度についての相互関係を変動周期24時間以上と以下に分離して考察し、水収支の基本的変動特性を求めた。
    66-67

  • 切り花の水収支と品質の変動特性 ―水収支モデルについて―

    和氣佳美,川上昭太郎,坂口栄一郎

    第67回農業機械学会年次大会講演要旨(於宮崎観光ホテル)  2008.03  農業機械学会

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    Event date: 2008.03

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:宮崎観光ホテル  

    切り花の初期品質に関係する吸水量、蒸散量、新鮮重の時間経過に伴う変動特性を求めそれを支配している水収支モデルを明らかにすることを目的として実施した。
    229-230

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Committee Memberships 【 display / non-display

  • 農業食料工学会   選挙管理委員  

    2018.10 - 2019.03   

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    Committee type:Academic society

Basic stance of industry-university cooperation 【 display / non-display

  • 基礎研究だけでなくより現場に近い研究にも携わりたいと考えています。

Attractiveness of Research 【 display / non-display

  • 「物理が嫌い」とか「数学は苦手」ということでなく、生産環境工学科で何を学びたいのかということを考えてみたらどうでしょう。