Can airborne ultrasound monitor bubble size in chocolate?

Watson, Nik and Hazlehurs, Tom and Povey, Malcolm and Vieira, Joselio and Sundara, Ramana (2014) Can airborne ultrasound monitor bubble size in chocolate? Journal of Physics: Conference Series, 498 . ISSN 1742-6588

Full content URL: https://doi.org/10.1088/1742-6596/498/1/012001

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Abstract

Aerated chocolate products consist of solid chocolate with the inclusion of bubbles and are a popular consumer product in many countries. The volume fraction and size distribution of the bubbles has an effect on their sensory properties and manufacturing cost. For these reasons it is important to have an online real time process monitoring system capable of measuring their bubble size distribution. As these products are eaten by consumers it is desirable that the monitoring system is non contact to avoid food contaminations. In this work we assess the feasibility of using an airborne ultrasound system to monitor the bubble size distribution in aerated chocolate bars. The experimental results from the airborne acoustic experiments were compared with theoretical results for known bubble size distributions using COMSOL Multiphysics. This combined experimental and theoretical approach is used to develop a greater understanding of how ultrasound propagates through aerated chocolate and to assess the feasibility of using airborne ultrasound to monitor bubble size distribution in these systems. The results indicated that a smaller bubble size distribution would result in an increase in attenuation through the product.

Additional Information:The Anglo–French Physical Acoustics Conference (AFPAC) had its 12th annual meeting in Villa Clythia, Fréjus, France, from 16th to 18th January 2013.
Keywords:aeration, chocolate, ultrasound, sensory, NotOAChecked
Subjects:D Veterinary Sciences, Agriculture and related subjects > D633 Food and Beverage Technology
D Veterinary Sciences, Agriculture and related subjects > D631 Food and Beverage Manufacture
D Veterinary Sciences, Agriculture and related subjects > D610 Food Science
D Veterinary Sciences, Agriculture and related subjects > D640 Food and Beverages for the Consumer
Divisions:College of Science
ID Code:26422
Deposited On:17 Mar 2017 12:59

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