2021 Fiscal Year Final Research Report
Digestion, absorption and biological activity of phytoceramide 1-phosphate in vegetables.
Project/Area Number |
19K05863
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 38050:Food sciences-related
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Research Institution | The University of Tokushima |
Principal Investigator |
TANAKA Tamotsu 徳島大学, 大学院社会産業理工学研究部(生物資源産業学域), 教授 (90258301)
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Project Period (FY) |
2019-04-01 – 2022-03-31
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Keywords | スフィンゴ脂質 / 植物脂質 / 食事性脂質 / 消化吸収 |
Outline of Final Research Achievements |
Glycosylinositol phosphoceramide (GIPC) and phytoceramide 1-phosphate (PC1P) are plant sphingolipids. We investigated Isolation, physicochemical stability, quantification, structural analysis and digestibility of these phytosphingolipids. The PC1P was extractable with two-phase separation system of chloroform / methanol / water. On the other hand, GIPC was extractable with alcohol / water mixture. The isolated GIPC and PC1P were structurally confirmed by MALDI TOF MS and quantified by the phosphomolybdenum method. The GIPC was unstable to heat (125℃) and acid (1M HCl), and not hydrolyzed by the treatment of porcine pancreas enzymes. The PC1P was stable to heat and acid, but found to be hydrolyzed by alkaline phosphatase derived from the small intestine.
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Free Research Field |
脂質生化学
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Academic Significance and Societal Importance of the Research Achievements |
スフィンゴ脂質は細胞膜成分であるだけでなく、ホルモン様物質の産生源や皮膚バリアの主成分として、重要な機能を担っている。体内のスフィンゴ脂質の生合成や分解が障害されると、神経や皮膚の健常性が損なわれる。また、老化に伴うスフィンゴ脂質産生量の低下は神経や皮膚のバリア機能の低下と関連する可能性がある。このような場合、食物中のスフィンゴ脂質で体内のスフィンゴ脂質産生の低下を補うことが考えられるが、食事性スフィンゴ脂質の消化吸収については十分な知見がない。本研究では植物スフィンゴ脂質のGIPCとPC1Pについて、その栄養価値を調べる目的で、抽出や分析方法を確立し、その消化性について調べた。
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