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2019 Fiscal Year Final Research Report

Lectins isolated from foods after cooking exert immunostimulatory effects and inhibit cell proliferation in some cancers

Research Project

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Project/Area Number 15K00805
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Eating habits
Research InstitutionKagawa University (2018-2019)
Shujitsu Junior College (2015-2017)

Principal Investigator

Une Satsuki  香川大学, 教育学部, 教授 (60169620)

Co-Investigator(Kenkyū-buntansha) 中田 理恵子  奈良女子大学, 生活環境科学系, 准教授 (90198119)
Project Period (FY) 2015-04-01 – 2020-03-31
Keywordsレクチン / 加熱 / キントキマメ / サトイモ / ナタマメ / B16メラノーマ細胞 / 免疫機能増強作用
Outline of Final Research Achievements

Lectins are mainly purified from raw foods. To date, studies on the biological properties of edible lectins purified after heating have been inconclusive. In this study, kintoki beans and taro tubers were selected as the materials. The lectins remaining in the foods after heating were purified and their effects on the immune system and proliferation of cancer cells were investigated.
Lectins remained in heated kintoki beans and taro tubers. These lectins showed resistance to proteolytic enzymes in vitro and were expected to show the same functionality in the human body. The results showed that, when ingested, these lectins inhibited cell proliferation of some cancer cells and had immunostimulatory effects.

Free Research Field

食品の機能性

Academic Significance and Societal Importance of the Research Achievements

加熱後にも食品中に残存するレクチンを精製し、その性質を、食品として摂取した場合に期待できる機能性を、ガン細胞増殖抑制作用及び、免疫賦活作用の両側面から明らかにした。
地球温暖化に伴い食糧危機も危惧されていく中で、マメ科やイモ科の植物は幅広い環境に適応して生育するものも多い。収量が多い利点もあり、救荒作物として食糧源としたとき、その機能性が少しでも明らかになっている方が食品としては望ましい。本研究により、加熱した食品の中にもレクチンが残存し、微量に摂取した場合には、一部のガン細胞に対する増殖抑制作用並びに、免疫賦活作用を有することが明らかになった。

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Published: 2021-02-19  

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