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Faculty of Agriculture Region of Marine Life Science |
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Professor |
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TAOKA Yosuke
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Degree 【 display / non-display 】
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Doctor (Fishery) ( 2007.3 Kagoshima University )
Research Areas 【 display / non-display 】
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Life Science / Aquatic bioproduction science
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Life Science / Applied microbiology
Papers 【 display / non-display 】
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Santiwijai M., Taoka Y.
Developmental and Comparative Immunology 170 2025.9
Publishing type：Research paper (scientific journal) Publisher：Developmental and Comparative Immunology
The effects of oral administration of probiotics Bacillus subtilis (BS) and Aspergillus sojae-fermented materials (AFM) supplementation on immune responses and the gut microbiome of masu salmon Oncorhynchus masou masou were evaluated. Masu salmon (44.07 ± 7.1 g) were individually raised on a commercial diet without supplementation (control group), with B. subtilis strain DB9011 at 1.0 × 10<sup>6</sup> cfu/g-feed (BS group), and with A. sojae-fermented materials supplementation at 0.2 % (AFM group) for 24 days. Lysozyme activity in fish serum was determined using turbidimetric assays. Immune-related gene expression and gut microbiota were analyzed through real-time PCR and metagenomics analysis with a next-generation sequencer, respectively. Both the BS and AFM groups showed higher lysozyme activity but lower serum protein concentrations compared to the control group without significant different. The gut bacterial composition in the BS and AFM groups was dramatically different compared to that in the control group. The alpha diversity of the BS group showed significantly greater richness in terms of Chao1, faith_pb, and shannon_entropy. Conversely, the alpha diversity of the AFM group showed significantly greater richness only on faith_pb. The expression of immune-related genes such as TNF-α and IFN-γ was upregulated in the treatment group compared to the control group. IL1-β was upregulated in the AFM group. Regarding IL1-β, no differences were observed between the control and BS group. Thus, results indicated that oral administration of the BS and AFM modify gut microbiota and stimulated the expression of immune-gene expression.
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Effects of Exogenous Protease Supplementation on the Degradation of an Extruder Pellet Diet and the Growth of Amberjack, Seriola Dumerili at Low Temperature Reviewed
Yousuke Taoka, Nguyen Thi Hue Linh, Setsuko Nagai, Noriko Nagasaka, Takayuki Minami, Mitsuhiro Matsuura and Terumi Koga
Oceanography & Fisheries 18 555992 2025.8
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Horie R., Imagawa T., Uchida K., Taoka Y., Tanaka R.
Journal of Food Composition and Analysis 139 2025.3
Publishing type：Research paper (scientific journal) Publisher：Journal of Food Composition and Analysis
Greeneye (Chlorophthalmus albatrossis) is a small fish with a mild white flesh and texture that can be eaten with bones. In this study, we aimed to clarify the effect of season and fishing ban period of greeneyes in terms of umami-related and functional component values by analyzing their chemical components. Greeneyes from the Japanese coast were analyzed between March 2023 (spring) and February 2024 (winter), excluding the fishing ban period on June 2023. Free amino acids and nucleic acid-related substances were analyzed as components associated with umami-related components. The free amino acid level was the highest (3619.13 ± 719.54 µg/g wet sample) in the spring before the fishing ban, while the inosine monophosphate level in autumn was the highest (3884.28 ± 666.56 µg/g wet sample). Therefore, the umami taste was higher in spring and autumn. The levels of functional components (lipid content, fatty acids, vitamin E, and imidazole dipeptides) increased following the implementation of the fishing ban. Calcium levels were approximately 5 mg/g sample, with no significant differences observed in all seasons; the level was comparable to other fish consumed with bones or alternative high-calcium food sources. In conclusion, greeneyes can be considered a stable source of calcium and fish throughout the year, with varying umami-related and functional components depending on the season.
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内田 勝久, 田岡 洋介, 田中 竜介
Journal of Food Composition and Analysis 139 107163 2025.3
Language：English Publishing type：Research paper (scientific journal) Publisher：Elsevier
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Effects of u ltra f ine b ubble s on the w ater q uality in a c losed r ecirculating s ystem for 3 Tilapia Oreochromis niloticus and the microbiome in the rearing water Reviewed
Yousuke T AOKA , Teruki K UROKI , Yasuhiro K ODOI , Eisei S AKATA and Chikashi K AMI MURA
Aquaculture Science 2024.7
Authorship：Lead author, Corresponding author Publishing type：Research paper (scientific journal)
Books 【 display / non-display 】
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養殖におけるプロバイオティクス技術の潮流
田岡洋介・Mungkornpan Santiwijai（ Role： Joint author）
緑書房 2025.2
Language：Japanese Book type：Textbook, survey, introduction
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養殖魚における腸内細菌の役割とプロバイオティクスを用いた防疫技術⑤
田岡洋介（ Role： Sole author）
湊文社 2025.2
Language：Japanese Book type：Textbook, survey, introduction
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養殖魚における腸内細菌の役割とプロバイオティクスを用いた防疫技術④
田岡洋介（ Role： Sole author）
湊文社 2025.1
Language：Japanese Book type：Textbook, survey, introduction
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養殖魚における腸内細菌の役割とプロバイオティクスを用いた防疫技術③
田岡洋介（ Role： Sole author）
湊文社 2024.12
Language：Japanese Book type：Textbook, survey, introduction
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養殖魚における腸内細菌の役割とプロバイオティクスを用いた防疫技術②
田岡洋介（ Role： Sole author）
湊文社 2024.11
Language：Japanese Book type：Textbook, survey, introduction
MISC 【 display / non-display 】
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シベリアチョウザメを原料とした蒲鉾の製造および評価 Reviewed
矢野原泰士,田岡洋介, 山口徹, 松浦史哉, 羽太拓未, 北垣世蓮, 別府和樹
南九州大学紀要 2023.12
Publishing type：Rapid communication, short report, research note, etc. (bulletin of university, research institution)
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水産増養殖におけるプロバイオティクスの可能性と物質代謝から見た作用機序の解明 Invited International coauthorship
田岡洋介・Nguyen Thi Hue Linh
アグリバイオ 2021.5
Authorship：Lead author Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)
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Taoka Y., Nagano N., Okita Y., Izumida H., Sugimoto S., Hayashi M.
Journal of Oleo Science 60 ( 5 ) 217 - 220 2011
Language：Japanese Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution) Publisher：Journal of Oleo Science
To examine the effect of cold shock treatment on the fatty acid composition of Aurantiochytrium limacinum strain mh0186, a marine thraustochytrid, we cultivated this strain at 28°C for 72 h with shaking and stored the obtained biomass at 10°C for 72 h. A growth experiment was carried out for comparison, wherein strain mh0186 was grown at 10 and 15°C for 72 h with shaking, and it was found that the unsaturation of fatty acids was accelerated relative to that at 28°C. In the cold shock experiment, the total lipid content signifi cantly increased during storage at 10°C for 72 h. Overall, the percentage of unsaturated fatty acids such as docosahexaenoic acid was almost stable while that of n-6 docosapentaenoic acid decreased slightly, but signifi cantly, relative to that in the growth experiment. © 2011 by Japan Oil Chemists' Society.
DOI： 10.5650/jos.60.217
Presentations 【 display / non-display 】
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Research on Probiotics in Aquaculture Invited International conference
Yousuke Taoka
Meetting 20250111@MFQAA 2025.1.10
Event date： 2025.1.10
Language：English Presentation type：Oral presentation (general)
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Lactococcus lactis subsp. lactis K-C2株による 養魚飼料由来代謝物のメタボローム解析 International coauthorship
早見 祐紀・並木よしの・Phan Trong Binh・八坂友里恵・ 田岡洋介
日本水産学会九州支部大会 2023.12.9
Event date： 2023.12.8 - 2023.12.9
Language：Japanese Presentation type：Oral presentation (general)
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Effect of oral administration of Aurantiochytrium sp. strain mem0039 cells on immune responses of common carp, Cyprinus carpio Invited International conference
Yousuke Taoka, Ms. Shizuki Okamoto, Mungkornpan Santiwijai
The 11th Annual World Congress of Ocean 2023.11.17
Event date： 2023.11.15 - 2023.11.17
Language：English Presentation type：Oral presentation (general)
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チョウザメ魚醤の速醸化の検討
矢野原泰士・田岡洋介・梅津和歩・山本瑞貴＊ 田島良亮・黒田明大・細田蓮也
日本水産学会春季大会 (オンライン開催（大会本部：東京海洋大学内）) 日本水産学会
Event date： 2021.3.26 - 2021.3.30
Language：English Presentation type：Oral presentation (general)
Venue：オンライン開催（大会本部：東京海洋大学内）
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Complete replacement of fishmeal in aquafeeds for carp, Cyprinus carpio with lipid-extracted residue derived from a thraustochytrid Aurantiochytrium sp. mem0039 Invited International conference
Noriyuki Tai, Horii Kenya, Yousuke Taoka
International Conference on Aquaculture and Fisheries in Bangkok (Bangkok, Thailand)
Event date： 2019.11.11 - 2019.11.12
Language：English Presentation type：Oral presentation (invited, special)
Venue：Bangkok, Thailand
Awards 【 display / non-display 】
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平成23年度日本水産学会論文賞
2012.3 公益社団法人日本水産学会
田岡洋介、前田広人、Jae-Yoon JO、Min-Jee JEON、Sungchul C. BAI、Won-Jae LEE、弓削寿哉、越塩俊介
Award type：International academic award (Japan or overseas) Country：Japan
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平成18年度日本防菌防黴学会論文賞
2006.5 鹿児島大学
塩崎靖志、前田広人、田岡洋介、越塩俊介、吉川毅、坂田泰造、C. Saclauso
Award type：Award from Japanese society, conference, symposium, etc. Country：Japan
Other research activities 【 display / non-display 】
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宮崎県西都産養殖鯉を用いた機能性魚醤油の開発
2021.04 - 2022.03
全国3位を誇る西都産養殖鯉の高度利用化を図るため、本養殖鯉を用いた機能性魚醤油並びにエキスの開発に関する研究を実施した。
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平成30年度拡充（ソフト）事業"細島いわがき"成分検査事業
2018.04 - 2019.03
日向市との共同研究「平成30年度拡充（ソフト）事業"細島いわがき"成分検査事業」を実施、1年間を通して養殖牡蠣の成分評価を行なった。
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TECH PLANTER 2018 宮崎大会
2017.12
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宮崎県日向市沿岸の水質調査とブランド化に関わる研究
2015.04
COC地域貢献研究事業のもと、日向市と協同して特産水産物であるハマグリのブランド化（DHA強化ハマグリ作出）に関する研究を行った。またハマグリ資源管理のため、ハマグリ生息域である沿岸部の海水質調査を行った。
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宮崎県高鍋町沿岸海水質調査
2015.04
宮崎コンソーシアム公募型卒論テーマとして、高鍋町との協同の元、高鍋沿岸域の海水質調査を行った。地場水産有用種であるカキの生息環境としての高鍋沿岸域を評価するとともに、資源保持のための施策を行政と連動して検討する。なお本研究テーマを担当した学生が同年度のコンソーシアム報告会にて口頭発表し、最優秀賞を受賞した。
Available Technology 【 display / non-display 】
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乳酸菌を用いた機能性成分強化発酵食品の開発
宮崎県産水産物を用いた魚醤の開発Home Page： 研究室ホームページ
Related fields where technical consultation is available：・発酵微生物の単離・同定や最適培養条件の探索
・水産物・農作物の発酵試験、成分分析（アミノ酸分析など）Message：・共同研究の希望テーマ：微生物を用いた新規発酵食品の開発
・「素材の発酵食品化」というニーズがあれば、ぜひ教えてください。
・食品加工残渣（未利用資源）を利用した食品の開発ニーズがあれば、ぜひご連絡ください。