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2020 Fiscal Year Final Research Report

Functional improvements in beta-lactoglobulin by preparing edible bioconjugates

Research Project

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Project/Area Number 18K05473
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38050:Food sciences-related
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Hattori Makoto  東京農工大学, (連合)農学研究科(研究院), 教授 (40221501)

Co-Investigator(Kenkyū-buntansha) 好田 正  東京農工大学, (連合)農学研究科(研究院), 教授 (20302911)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywordsprotein conjugation / functional improvements / β-lactoglobulin
Outline of Final Research Achievements

Using β-lactoglobulin (β-LG), which is the main whey protein of milk, as a target, it was conjugated with low antigenic and immunogenic pectin (PEC) and polylysine (PL). We have prepared edible bioconjugates that can be applied to actual food. The β-LG-PEC conjugate was obtained by the Maillard reaction, and the β-LG-PL conjugate was obtained by the reaction of transglutaminase. Structural analysis of the conjugates revealed that all of them almost maintained the native structure of β-LG. Improvement of emulsifying property and reduction of immunogenicity were observed in all conjugates, and the method of this study was considered to be effective for functional modification of β-LG.

Free Research Field

食品科学

Academic Significance and Societal Importance of the Research Achievements

タンパク質等の天然生体高分子は、生命に直接関与するだけでなく、素材として衣食住に密接に関わる点で重要で、近年の高度化と多様化の潮流により、さらに新たな機能の開発、改変、高機能化が必要である。既存の天然分子とは本質的に異なった、高度な要求に対応できるような新たな物質 (特にハイブリッド分子)の創出がきわめて重要であると考えられるようになってきている。本研究の遂行により、牛乳β-ラクトグロブリンについて実際の食品に応用可能なハイブリッド分子を調製することに成功し、食品アレルギーの解決ならびに機能特性の改善を同時に達成することができた。本研究の成果は他の有用タンパク質の高機能化にも有用な知見である。

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Published: 2022-01-27  

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