Yoichi Toyokawa

Profile Information

Affiliation: 博士研究員, 先端科学技術研究科ストレス微生物科学研究室, 奈良先端科学技術大学院大学

Degree: 保健学(琉球大学)

J-GLOBAL ID: 201901012503906116
researchmap Member ID: B000381347

Research Areas

Life sciences / Applied microbiology /

Papers

Improvement of valine and isobutanol production in sake yeast by Ala31Thr substitution in the regulatory subunit of acetohydroxy acid synthase.

Shota Isogai, Akira Nishimura, Naoyuki Murakami, Natsuki Hotta, Atsushi Kotaka, Yoichi Toyokawa, Hiroki Ishida, Hiroshi Takagi

FEMS yeast research, 23, Jan 4, 2023
Characterization of a new Saccharomyces cerevisiae isolated from banana stems and its mutant with l-leucine accumulation for awamori brewing.

Masatoshi Tsukahara, Shota Isogai, Haruna Azuma, Keiko Tsukahara, Yoichi Toyokawa, Hiroshi Takagi

Bioscience, biotechnology, and biochemistry, Nov 17, 2022
High-Level Production of Lysine in the Yeast Saccharomyces cerevisiae by Rational Design of Homocitrate Synthase.

Shota Isogai, Tomonori Matsushita, Hiroyuki Imanishi, Jirasin Koonthongkaew, Yoichi Toyokawa, Akira Nishimura, Xiao Yi, Romas Kazlauskas, Hiroshi Takagi

Applied and environmental microbiology, 87(15) e0060021, Jul 13, 2021
Effect of the Ala234Asp replacement in mitochondrial branched-chain amino acid aminotransferase on the production of BCAAs and fusel alcohols in yeast

Jirasin Koonthongkaew, Yoichi Toyokawa, Masataka Ohashi, Christopher R. L. Large, Maitreya J. Dunham, Hiroshi Takagi

APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 104(18) 7915-7925, Sep, 2020 Peer-reviewed
Characterization of a New Saccharomyces cerevisiae Isolated From Hibiscus Flower and Its Mutant With L-Leucine Accumulation for Awamori Brewing

Takayuki Abe, Yoichi Toyokawa, Yukiko Sugimoto, Haruna Azuma, Keiko Tsukahara, Ryo Nasuno, Daisuke Watanabe, Masatoshi Tsukahara, Hiroshi Takagi

FRONTIERS IN GENETICS, 10 490-490, May, 2019 Peer-reviewed
Roller conveyer system for the reduction of pesticides using non-thermal gas plasma - A potential food safety control measure?

Yoichi Toyokawa, Yoshihito Yagyu, Risa Yamashiro, Kazunori Ninomiya, Akikazu Sakudo

FOOD CONTROL, 87 211-217, May, 2018 Peer-reviewed
Crucial roles of reactive chemical species in modification of respiratory syncytial virus by nitrogen gas plasma

Akikazu Sakudo, Yoichi Toyokawa, Yuichiro Imanishi, Tomoyuki Murakami

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, 74 131-136, May, 2017 Peer-reviewed
Degradation and detoxification of aflatoxin B-1 using nitrogen gas plasma generated by a static induction thyristor as a pulsed power supply

Akikazu Sakudo, Yoichi Toyokawa, Tatsuya Misawa, Yuichiro Imanishi

FOOD CONTROL, 73 619-626, Mar, 2017 Peer-reviewed
A new roller conveyer system of non-thermal gas plasma as a potential control measure of plant pathogenic bacteria in primary food production

Yoichi Toyokawa, Yoshihito Yagyu, Tatsuya Misawa, Akikazu Sakudo

FOOD CONTROL, 72 62-72, Feb, 2017 Peer-reviewed
Nitrogen gas plasma treatment of bacterial spores induces oxidative stress that damages the genomic DNA

Akikazu Sakudo, Yoichi Toyokawa, Tetsuji Nakamura, Yoshihito Yagyu, Yuichiro Imanishi

MOLECULAR MEDICINE REPORTS, 15(1) 396-402, Jan, 2017 Peer-reviewed
Nitrogen Gas Plasma Generated by a Static Induction Thyristor as a Pulsed Power Supply Inactivates Adenovirus

Akikazu Sakudo, Yoichi Toyokawa, Yuichiro Imanishi

PLOS ONE, 11(6), Jun, 2016 Peer-reviewed
Inactivation of Salmonella by nitrogen gas plasma generated by a static induction thyristor as a pulsed power supply

Kojiro Maeda, Yoichi Toyokawa, Naohiro Shimizu, Yuichiro Imanishi, Akikazu Sakudo

FOOD CONTROL, 52 54-59, Jun, 2015 Peer-reviewed
Reducing the antigenicity of milk whey protein using acid proteinases from Monascus pilosus

P. L. Nilantha Lakshman, Yoichi Toyokawa, Shinjiro Tachibana, Hirohide Toyama, Toki Taira, Masaaki Yasuda

PROCESS BIOCHEMISTRY, 46(3) 806-810, Mar, 2011 Peer-reviewed
Purification and characterisation of two extracellular acid proteinases from Monascus pilosus

P. L. Nilantha Lakshman, Yoichi Toyokawa, Hirohide Toyama, Toki Taira, Masaaki Yasuda

FOOD CHEMISTRY, 121(4) 1216-1224, Aug, 2010 Peer-reviewed
Purification and characterization of a halotolerant serine proteinase from thermotolerant Bacillus licheniformis RKK-04 isolated from Thai fish sauce

Yoichi Toyokawa, Hiroaki Takahara, Alissara Reungsang, Masakazu Fukuta, Yuki Hachimine, Shinjiro Tachibana, Masaaki Yasuda

APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 86(6) 1867-1875, May, 2010 Peer-reviewed

Misc.

ローラーコンベア型プラズマ装置を用いたアスペルギルスに対する殺菌効果とメカニズムの解析

照屋真吾, 豊川洋一, 山城梨沙, 柳生義人, 三沢達也, 作道章一

九州農業試験研究機関協議会研究発表会発表要旨集(Web), 80th ROMBUNNO.NOGYOKIKAIBUKAI,16 (WEB ONLY), Aug, 2017
ローラーコンベアー型プラズマ装置による農薬の分解

豊川洋一, 柳生義人, 作道章一

応用物理学会春季学術講演会講演予稿集(CD-ROM), 64th ROMBUNNO.17p‐313‐6, Mar 1, 2017
誘電体バリア放電プラズマトーチを用いたネコカリシウイルス不活化機構の解析

山城梨沙, 三沢達也, 豊川洋一, 作道章一

応用物理学会春季学術講演会講演予稿集(CD-ROM), 64th ROMBUNNO.17p‐313‐5, Mar 1, 2017
ローラーコンベアー型プラズマ装置による黒腐病菌の不活化とそのメカニズム

豊川洋一, 柳生義人, 三沢達也, 作道章一

沖縄農業研究会大会講演要旨・総会資料, 55th 49‐50, Aug 12, 2016
窒素ガスプラズマによるカビ毒の分解・不活化

作道章一, 豊川洋一, 仲村哲二, 三沢達也, 村上朝之

応用物理学会九州支部学術講演会講演予稿集(Web), 41 115 (WEB ONLY), Dec 5, 2015
ローラコンベアー型プラズマ装置による黒腐病菌殺菌モデルの解析

豊川洋一, 仲村哲二, 作道章一, 柳生義人, 三沢達也

応用物理学会九州支部学術講演会講演予稿集(Web), 41 116 (WEB ONLY), Dec 5, 2015
ローラーコンベアー型プラズマ装置を用いた黒腐病菌(Xanthomonas)の不活化とそのメカニズムの解析

豊川洋一, 柳生義人, 三沢達也, 作道章一

日本防菌防ばい学会年次大会要旨集, 42nd 181, Aug 31, 2015
窒素ガスプラズマによるサルモネラ殺菌とそのメカニズム

豊川洋一, 前田浩次郎, 作道章一, 清水尚博, 今西雄一郎

応用物理学会九州支部学術講演会講演予稿集, 40 165 (WEB ONLY), Dec 6, 2014
誘電体バリア放電プラズマトーチを用いたHelicobacter pyloriの不活化

宮城博俊, 三沢達也, 豊川洋一, 富名腰敬, 作道章一

応用物理学会九州支部学術講演会講演予稿集, 40 167 (WEB ONLY), Dec 6, 2014
Recent advances in gas plasma technology for sterilization

豊川洋一, 作道章一

琉球医学会誌, 33(1-3) 9-15, Dec, 2014
農産物の殺菌消毒を目的に開発したガスプラズマ装置から発生する近赤外スペクトルの解析

作道章一, 豊川洋一, 富名腰敬, 三沢達也, 林信哉, 柳生義人

近赤外フォーラム講演要旨集, 30th 116, Nov 26, 2014
ローラーコンベアー型プラズマ装置の殺菌効果の解析

豊川洋一, 柳生義人, 三沢達也, 西岡輝美, 作道章一

農業施設, 45(3) 122, Sep 25, 2014
窒素ガスプラズマによるプリオン病原体の不活化

作道章一, 豊川洋一, 清水尚博, 今西雄一郎

農業施設, 45(3) 122, Sep 25, 2014
ガスプラズマ技術を応用して作製した抗体結合磁性ナノ粒子を用いたサルモネラ高感度検出法の開発

作道章一, 豊川洋一, 永津雅章

日本防菌防ばい学会年次大会要旨集, 41st 67, Sep 23, 2014
窒素ガスプラズマによるプリオン病原体の不活化

作道章一, 豊川洋一, 清水尚博, 今西雄一郎

農業施設学会大会講演要旨, 2014 31-32, Aug 27, 2014

Research Projects

Studies of blanched-chain amino acid aminotransferase and BCAA metabolism on S. cerevisiae

Grants-in-Aid for Scientific Research, Grant-in-Aid for Research Activity Start-up, Japan Society for the Promotion of Science, Aug, 2018 - Mar, 2020

Toyokawa Yoichi

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