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United States Department of Agriculture

Agricultural Research Service

Research Project: BIOLOGICAL, BEHAVIORAL, AND PHYSICAL CONTROL AS ALTERNATIVES FOR STORED PRODUCT AND QUARANTINE PESTS OF FRESH/DRIED FRUITS AND NUTS Title: Determining radio frequency heating uniformity of mixed beans during disinfestation treatments

item Jiao, S -
item Tang, J -
item Johnson, Judy
item Tiwari, G -
item Wang, S -

Submitted to: Microwave Power Symposium Proceedings
Publication Type: Proceedings
Publication Acceptance Date: May 10, 2010
Publication Date: July 15, 2010
Citation: Jiao, S., Tang, J., Johnson, J.A., Tiwari, G., Wang, S. 2010. Determining radio frequency heating uniformity of mixed beans during disinfestation treatments. 2010 IMPI 44th Annual Microwave Power Symposium Proceedings. July 14-16, 2010, Denver, CO.

Technical Abstract: Since chickpeas and lentils are difficulty to artificially infest with live insects for radio frequency (RF) treatment validation, black-eyed peas and mung beans were selected to infest with insects before mixing with chickpeas and lentils. Temperature difference between black-eyed pea and chickpea or between mung bean and lentil were determined in a pilot-scale 27 MHz RF unit. When subjected to RF heating for 6 and 10 min, the final temperatures in black-eyed pea at the moisture content of 8.8% and mung bean at 10.2% w.b. were 6 and 4°C higher than those in chickpea at 7.0% and lentil at 7.1% w.b. when the sample temperature was raised to 60°C. To obtain conservative results, chickpea and lentil should reach slightly higher temperatures than the black-eyed pea and mung bean in the same treatment. By reducing the moisture contents in black-eyed pea and mung bean to 2.6% and 3.7%, respectively, their final temperatures were about 3.5 and 3.7°C lower than those of chickpea and lentil.

Last Modified: 12/1/2015
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