結晶の形と長さを制御し「油」を強く固める新技術~ゲルの壊れにくさを最大約 40 倍向上、食品や化粧品など幅広い分野での応用に期待~

2026-02-20 広島大学

広島大学大学院統合生命科学研究科の小泉晴比古准教授らは、脂質ウィスカー結晶の「長さ」と「形状」を制御することでオレオゲルの物性を大幅に向上させる技術を確立した。高純度PSPを用い、テンパリング温度を上げると結晶が長尺化し、貯蔵弾性率が増大することを確認。さらに不純物を取り込ませ結晶を蛇行状にすると、臨界ひずみが0.54%から21.2%へと約40倍向上した。結晶形態制御により安定で壊れにくいオレオゲル作製が可能となり、プラントベースフードのジューシーさ再現や食品・化粧品分野への応用が期待される。成果はFood Research Internationalに掲載された。

結晶の形と長さを制御し「油」を強く固める新技術~ゲルの壊れにくさを最大約 40 倍向上、食品や化粧品など幅広い分野での応用に期待~

<関連情報>

結晶形態制御による脂質ウィスカーオレオゲルの物理的特性の制御 Control of physical properties of lipid whisker oleogels by crystal morphology regulation

Haruhiko Koizumi, Fumiya Nakano, Noritaka Oishi, Tomoya Yamazaki, Yuki Kimura, Kazuhiro Hamamoto, Satoru Ueno
Food Research International  Available online: 4 December 2025
DOI:https://doi.org/10.1016/j.foodres.2025.117999

Highlights

  • Storage modulus of oleogels increased with increasing tempering temperature.
  • Length of the lipid whisker crystals increased at higher tempering temperatures.
  • Shape of lipid whisker crystals could also be regulated by impurities.
  • Physical properties of lipid whisker oleogels can be controlled by morphology.

Abstract

The increasing demand for alternative foods made from soybeans and other plant-derived materials highlights a critical challenge, and in the present case, the reproduction of “juiciness” for alternative meats. The use of oleogels has strong potential to overcome such an integral problem for alternative meats. We have recently demonstrated that oleogels can be manufactured with the addition of only 0.5 wt% fully hydrogenated hard palm oil mid-fraction (FHHPMF), and have a network structure composed of single-crystal lipid whiskers. Here, we discuss the growth mechanism of lipid whisker crystals using high-purity 1,3-dipalmitoyl-2-stearoylglycerol (PSP), which is a major component of FHHPMF. We also demonstrate that the physical properties of lipid whisker oleogels can be controlled by regulation of the growth of lipid whisker crystals in the oleogels. Therefore, this novel manufacturing technology of oleogels has strong potential to advance the technology of plant-based meats.

1202農芸化学
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