Updated on 2023/10/06

写真a

 
HASHIZUME Hiroshi
 
Organization
Center for Low-temperature Plasma Sciences (cLPS) Designated lecturer
Title
Designated lecturer

Degree 3

  1. 博士(薬学) ( 2011.3   名古屋市立大学 ) 

  2. 修士(農学) ( 2001.3   名古屋大学 ) 

  3. 学士(農学) ( 1999.3   名古屋大学 ) 

 

Papers 4

  1. Efficacy of periodic cold plasma treatment in a paddy to produce white-core grains in brewer's rice cultivar Yamadanishiki

    Hashizume Hiroshi, Kitano Hidemi, Mizuno Hiroko, Abe Akiko, Yuasa Genki, Tohno Satoe, Tanaka Hiromasa, Ishikawa Kenji, Matsumoto Shogo, Sakakibara Hitoshi, Hirosue Yoji, Maeshima Masayoshi, Mizuno Masaaki, Hori Masaru

    FREE RADICAL RESEARCH   Vol. 57 ( 3 ) page: 161 - 173   2023.3

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    Language:English   Publisher:Free Radical Research  

    We investigated the effect of cold plasma application on the yield and grain quality of rice (Oryza sativa L.), focusing on the brewer’s rice cultivar, Yamadanishiki. Two treatment methods were examined in a paddy; direct plasma irradiation of seedlings and indirect treatment with plasma-activated Ringer’s lactate solution (PAL) during the vegetative growth phase. Periodic direct irradiation for 30 s increased whole plant weight and grain yield. Treatment with PAL promoted some growth of panicles relatively and partially suppressed the growth of culms and leaves. Both treatments affected the grain quality; an increase of the ratio of white-core grains to total number of grains, which is suited for producing Japanese sake rice, as well as a decrease of the ratio of immature grains. The results showed that the effective production of rice grains for sake production can be improved by the application of cold plasma treatment of rice seedlings in a paddy.Highlight Rice plants of brewer’s rice cultivar in a paddy were treated with cold plasma, by the direct irradiation of plants and the immersed of plants in plasma-activated Ringer’s lactate (PAL). Direct plasma irradiation promoted plant weight, grain ripening, and increased yield. PAL treatment affected the growth of main stem and promoted the growth of panicles relatively. Both treatments improved the producing white-core grains, in addition to promotion of grain ripening. Cold plasma treatment can be applied to produce stable and high-quality food in various agriculture and food industries, which can achieve the sustainable developmental goals (SDGs).

    DOI: 10.1080/10715762.2023.2215914

    Web of Science

    Scopus

    PubMed

  2. Indoor Floor Heel Mark Removal Using Spark Discharges and Pressurized Airflow

    Sakamoto Yoshihiro, Tsutsumi Takayoshi, Tanaka Hiromasa, Ishikawa Kenji, Hashizume Hiroshi, Hori Masaru

    COATINGS   Vol. 12 ( 12 )   2022.12

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    Publisher:Coatings  

    Heel marks (HMs), which are the black stains made by shoe soles on indoor floors, can be difficult to remove. However, this study shows how spark discharges combined with pressurized airflow in 60 s discharge treatments can remove such HMs. We further show that maximizing the HM removal rates depended on the electrode gap distance because of changes in the spark discharge parameters. In our experiments, the electrical voltage waveforms are shown with voltage spikes, called spark discharges, and the spike numbers were counted in 0.6-ms time units. It was found that the number of spark discharges increases when the electrode gap distance was widened from 5 mm to 10 mm and the pressurized airflow was added, and the HM removal rates increased 11.5%, the HM removal rates could be maximized. Taken together, the results show that spark discharges combined with pressurized air can remove HMs from indoor floors without no visual damage. This paper is a preliminary report showing that HMs can be removed by plasma.

    DOI: 10.3390/coatings12121938

    Web of Science

    Scopus

  3. Cytotoxicity of plasma-irradiated lactate solution produced under atmospheric airtight conditions and generation of the methyl amino group

    Ito Daiki, Iwata Naoyuki, Ishikawa Kenji, Nakamura Kae, Hashizume Hiroshi, Miron Camelia, Tanaka Hiromasa, Kajiyama Hiroaki, Toyokuni Shinya, Mizuno Masaaki, Hori Masaru

    APPLIED PHYSICS EXPRESS   Vol. 15 ( 5 )   2022.5

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    Publisher:Applied Physics Express  

    Ringer's lactate solution was irradiated with non-equilibrium plasma under airtight conditions. The plasma-activated lactate (PAL) was produced with argon, oxygen, and nitrogen gases following purging of Ar. Cytotoxicity could be controlled by diluting PAL, and a killing effect was selectively obtained on cancer cells compared to normal cells for Ar+O2+N2 PALs. Nonetheless, cytotoxicity was partly reproduced by similar concentrations of H2O2 and NO2- in the PALs. The organics produced by plasma irradiation to lactate were investigated using nuclear magnetic resonance, and the generation of methyl amino species was confirmed.

    DOI: 10.35848/1882-0786/ac6360

    Web of Science

    Scopus

  4. Enhancement of ethanol production and cell growth in budding yeast by direct irradiation of low-temperature plasma

    Tanaka Hiromasa, Matsumura Shogo, Ishikawa Kenji, Hashizume Hiroshi, Ito Masafumi, Nakamura Kae, Kajiyama Hiroaki, Kikkawa Fumitaka, Ito Mikako, Ohno Kinji, Okazaki Yasumasa, Toyokuni Shinya, Mizuno Masaaki, Hori Masaru

    JAPANESE JOURNAL OF APPLIED PHYSICS   Vol. 61 ( SA )   2022.1

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    Publisher:Japanese Journal of Applied Physics  

    Ethanol production by budding yeast was compared between direct and indirect plasma irradiation. We observed enhancement of ethanol production and cell growth not by indirect plasma irradiation but by direct plasma irradiation. Glucose consumption was increased in budding yeast by direct plasma irradiation. Extracellular flux analysis revealed that glycolytic activity in the budding yeast was elevated by direct plasma irradiation. These results suggest that direct plasma irradiation enhances ethanol production in budding yeast by elevating the glycolytic activity.

    DOI: 10.35848/1347-4065/ac2037

    Web of Science

    Scopus