Method and plant for solvent-free microwave extraction of...

Details Method and plant for solvent-free microwave extraction of... Method and plant for solvent-free microwave extraction of...

2006-02-21

2006-02-21

Zeman, Mary K. (Department: 1631)

Food or edible material: processes, compositions, and products

Direct application of electrical or wave energy to food...

Heating by electromagnetic wave

C426S425000, C426S442000, C426S472000, C424S725000, C424S725100, C435S289100, C034S263000, C034S265000

Reexamination Certificate

active

07001629

ABSTRACT:
A microwave extraction method involves the steps of placing biological material in an enclosure without any solvent whatsoever and exposing the solvent-free biological material to microwave radiation to free at least some of the natural product, and then separating any residual biological material from the extracted natural product. Additionally, the microwave extraction method involves the steps of applying reduced pressure in the enclosure during the microwave radiation stage and heating the enclosure during at least most of the microwave radiation stage to compensate for the temperature drop resulting from water evaporation from the biological material.

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