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Schematic diagram of ultrasound and microwave-assisted vacuum frying (USMVF) instrument. 1. Oil tank, 2. Microwave source and heating system, 3. Ultrasound source and vacuum pressure balance system, 4. Vacuum chamber, 5. Frying chamber, &. Circulation pump, 7. Electric cabin door system, 8. Bending and centrifugation system, 9. Controller and operation panel. Adapted from Devi et al., [48] and Zhang et al. [97].
