Reconstruction of human food habits in early-modern Japan by isotope analysis of hairs embedded in the old books
| Project/Area Number |
19K21656
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 3:History, archaeology, museology, and related fields
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| Research Institution | Ryukoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
入口 敦志 国文学研究資料館, 研究部, 教授 (80243872)
神松 幸弘 立命館大学, 立命館グローバル・イノベーション研究機構, 准教授 (20370140)
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| Project Period (FY) |
2019-06-28 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 江戸時代 / 同位体分析 / 毛髪 / 和装本 / PIXE分析 / 文化財建造物 / 書籍 / 食生活 |
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| Outline of Research at the Start |
ユネスコ無形文化遺産「和食」の起源である江戸から明治初期における日本人の食生活を、書籍に漉き込まれた毛髪の安定同位体分析によって詳らかにする。申請者らが発表したばかりの新規的アプローチを洗練し、地方の出版物に対象を拡張することでより多くの地域の比較を、書籍の選定や素材の化学分析によってより細かな時間スケールで、当時の食物の同位体比を把握することでより定量的に行うことに挑戦する。
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| Outline of Final Research Achievements |
Hair embedded in 253 Japanese-style book-sets printed in the early modern and modern periods was extracted and subjected to carbon and nitrogen stable isotope analysis for dietary analysis and PIXE analysis to determine trace element content. Hair from modern humans (men and women of all ages) collected by an ethically-approved method was also subjected to PIXE analysis as a comparison (isotope ratios were not analyzed because they were known).
In an attempt to separate changes in diet and agriculture, we also began collecting samples to estimate chemical changes in rice, which has been the staple food of Japanese people. In particular, rice leaf samples estimated to have been harvested in the Kyoto area from the early modern period to the present day have already been collected sufficiently from cultural property buildings and are expected to serve as material for testing the competing hypotheses arising from the hair analysis.
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| Academic Significance and Societal Importance of the Research Achievements |
本研究活動で得られた知見は、当初計画以上に学際的である。すなわち、窒素同位体比は江戸時代を通じた海への依存度の上昇、炭素同位体比はC4植物への 依存度の上昇を明らかにしたほか、PIXE分析で定量される多種の微少元素含有量は、江戸時代よりも現代において小さいことが示された。歴史学や自然人類学は もとより、栄養学や土壌学にも刺激しうる知見が見いだされつつある。さらに刺激的な生物試料（イネ）の入手に目途がついたことの学術的将来性も強調したい。
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Report
(5 results)
Research Products
(13 results)
