超音波振動を利用した氷晶形成の制御による食品の高品質冷凍技術の開発

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Author: 多田, 幸生ほか

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Publication date: 2014-06-03

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Note (General)：: 金沢大学機械工学系超音波振動を利用した食品の高品質冷凍技術の開発を目的に，超音波振動が水の過冷却と氷晶形成に及ぼす影響を実験的・理論的に追究した．超音波振動を高出力で付与した場合には過冷却の解除効果が顕在化するが，低出力で照射した場合には弱い過冷却の促進効果が見出された．また，超音波振動の振幅に20...

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https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-23560221/23560221seika/

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Material Type: 文書・図像類
Title: 超音波振動を利用した氷晶形成の制御による食品の高品質冷凍技術の開発
Author/Editor: 多田, 幸生
Tada, Yukio
Author Heading: 多田, 幸生
Tada, Yukio
Publication Date: 2014-06-03
Publication Date (W3CDTF): 2014-06-03
Alternative Title: Development of high-quality cryopreservation by active control of ice formation utilizing ultrasonic vibration
Periodical title: 平成25(2013)年度科学研究費補助金基盤研究(C) 研究成果報告書 = 2013 Fiscal Year Final Research Report
No. or year of volume/issue: 2011-2013
Volume: 2011-2013
Pages: 4p.-
Text Language Code: jpn
Subject Heading: 凍結
超音波振動
過冷却
氷晶形成
食品
Target Audience: 一般
Note (General): 金沢大学機械工学系
超音波振動を利用した食品の高品質冷凍技術の開発を目的に，超音波振動が水の過冷却と氷晶形成に及ぼす影響を実験的・理論的に追究した．超音波振動を高出力で付与した場合には過冷却の解除効果が顕在化するが，低出力で照射した場合には弱い過冷却の促進効果が見出された．また，超音波振動の振幅に20～25kHzの周期的な変動を付与することで過冷却促進効果が若干向上する結果を得た．さらに変動磁場の併用による促進効果が示された．また，分子動力学計算を行い，水分子に交番電場による攪乱を付与することで，氷晶成長の遅れを誘起できる可能性が示された．以上により，外部力を利用した食品の高品質冷凍技術の開発の基礎が得られた.
A method to actively controlling crystallization is one of promising technique for cryopreservation of food. The object of this project is to study the effects of ultrasonic vibration on supercooling of water. Two types of ultrasonic vibration; (a)amplitude-regulated vibration at frequency of 1MHz and (b)amplitude-modulated vibration, were tested. Regarding the case of amplitude-regulated vibration, the supercooling degree decreased with increasing ultrasonic power. On the other hand, as for amplitude-modulated vibration, a weak enhancement of supercooling was found at amplitude-modulated frequency of 20-25kHz. Furthermore, it was indicated that there is optimum value of ultrasonic power for enhancing supercooling degree, since the action of ultrasonic vibration would have two aspects as to promote and reduce nucleation. Summarizing these results, the mechanism of sonocrystalization in biological tissue was discussed in relation to method of ultrasonic irradiation.
研究課題/領域番号:23560221, 研究期間(年度):2011-2013
DOI: 10.24517/00049450
Access Restrictions: 限定公開
Related Material: https://kaken.nii.ac.jp/search/?qm=20179708
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560221/
https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-23560221/23560221seika/
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 金沢大学 : 金沢大学学術情報リポジトリKURA