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A review of microwaves for food processing

Review

A. J. H. Sale · 1976

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Microwave heating alone has led to few commercial successes but combined with conventional heating it has greater potential and several successful processes.

Plain English Summary

Summary written for general audiences

Microwave heating alone has led to few commercial successes but combined with conventional heating has greater potential and several successful processes. Successful applications include pasta drying using a combination of microwave heating with hot air that reduces drying time from about 10 hours to about half an hour, and doughnut proofing that reduces proofing time from 30-40 minutes to 4 minutes with more than twenty units installed.

Finding

Microwave heating on its own has led to few commercially successful processes; however, when combined with conventional sources of heat, microwave heating appears to have greater potential, and has led to several successful processes.

In their words

“Microwave heating on its own has led to few commercially successful processes; however, when combined with conventional sources of heat, microwave heating appears to have greater potential, and has led to several successful processes.”
Cite This Study
A. J. H. Sale (1976). A review of microwaves for food processing.
Show BibTeX
@article{a_review_of_microwaves_for_food_processing_g5147,
  author = {A. J. H. Sale},
  title = {A review of microwaves for food processing},
  year = {1976},
  
  
}
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Quick Questions About This Study

Cakes entered the microwave tunnel at varying temperatures and emerged at varying temperatures, causing overheating to ensure pasteurization, and filled or iced cakes had differential heating and melting problems.
Thermal runaway occurs because water absorbs microwave power much more readily than ice, causing thawed surface regions to absorb increasing power and prevent effective heating of still-frozen central regions.
Pasta drying using a combination of microwave heating with hot air has been adopted by several U.S. manufacturers, and doughnut proofing systems have been installed in more than twenty units, reducing proofing time from 30-40 minutes to 4 minutes.
Microwave equipment has high capital cost and should be used continuously year-round, with maximum equipment utilization aimed for.