Visualization of oil migration pathway in chocolate

• Project/Area Number: 15K18698
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Food science
• Research Institution: Hiroshima University
• Principal Investigator: Hondoh Hironori 広島大学, 生物圏科学研究科, 講師 (10368003)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
• Keywords: 油脂 / 結晶 / 拡散 / 毛管力 / 構造 / 粒子 / シリコンオイル / 微細構造 / 移行経路 / 砂糖 / カカオマス / 油脂移行 / チョコレート / ファットブルーム

Outline of Final Research Achievements

We have developed a novel method to observe oil migration in chocolate using scanning electron microscopy and energy dispersive X-ray spectroscopy. With this method, we identified three different mode of oil migration, diffusion, capillary force and the combination of them. Silicone oil migration in chocolate extruded liquid oil of cocoa butter to the surface of chocolate. This liquid oil acceralated fat bloom formation on chocoate.

Research Products

• [Journal Article] Visualization of oil migration in chocolate using scanning electron microscopy-energy dispersive X-ray spectroscopy (2016)
  • Author(s): Hironori Hondoh*, Kenta Yamasaki, Miharu Ikutake, Satoru Ueno
  • Journal Title: Food Structure Volume: 8 Pages: 8-15
  • DOI: 10.1016/j.foostr.2016.04.001
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Diffusion coefficient of cocoa butter in canola oil (2016)
  • Author(s): Hironori Hondoh, Satoru Ueno
  • Organizer: 14th Euro Fed Lipid Congress
  • Place of Presentation: International Convention Center ICC Ghent, Ghent, Belgium
  • Year and Date: 2016-09-18
  • Int'l Joint Research
• [Presentation] キャノーラ油中のココアバターの拡散係数測定 (2016)
  • Author(s): 本同宏成，上野聡
  • Organizer: 日本油化学会第５５回年会
  • Place of Presentation: 奈良女子大，奈良
  • Year and Date: 2016-09-07
• [Presentation] チョコレートの内部構造と油脂移行 (2016)
  • Author(s): 本同宏成
  • Organizer: 第４３回食品の物性に関するシンポジウム
  • Place of Presentation: 広島アステールプラザ，広島
  • Year and Date: 2016-09-01
  • Invited
• [Presentation] Novel Approach to Visualize Oil Migration in Chocolate (2016)
  • Author(s): Hironori Hondoh
  • Organizer: 2016 Korean Society of Food Science and Technology International Symposium and Annual Meeting
  • Place of Presentation: EXCO, Daegu, Korea
  • Year and Date: 2016-08-17
  • Int'l Joint Research / Invited
• [Presentation] チョコレート中の油脂移行観察 (2016)
  • Author(s): 本同宏成，幾竹美晴，下田康平，青木大，上野聡
  • Organizer: 第３９回バイオレオロジー学会年会
  • Place of Presentation: 東海大学校友会館，東京
  • Year and Date: 2016-06-18
• [Presentation] Anisotropic oil migration in chocolate (2016)
  • Author(s): Hironori Hondoh, M. Ikutake, K. Shimoda, S. Ueno
  • Organizer: 2nd Food Structure and Functionality Forum Symposium
  • Place of Presentation: シンガポール
  • Year and Date: 2016-02-28
  • Int'l Joint Research
• [Presentation] 走査型電子顕微鏡/エネルギー分散型 X 線分光法によるチョコレート中油脂移行メカニズムの解明 (2015)
  • Author(s): 本同宏成
  • Organizer: 第６２回食品科学工学会
  • Place of Presentation: 京都大学
  • Year and Date: 2015-08-27
  • Invited