Improving capacitance measurements of aqueous solutions with alpha and beta corrections in a parallel-plate capacitor system: Insights into dielectric properties

Zada, Muhammad; Basir, Abdul; Lee, Byunghun; Yoo, Hyoungsuk

doi:10.1016/j.jfoodeng.2023.111798

Cited by 3 publications

(2 citation statements)

References 30 publications

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“…Microwaves are more effective in heating water since water exhibits the maximum microwave absorption at 18 GHz . On the other hand, the radiofrequency ranges from 3 MHz to 300 MH, and it promotes the ionic conduction of charged particles by the conduction losses . Therefore, radiofrequency is more suitable for selectively heating ionic components.…”

Section: Introductionmentioning

confidence: 99%

“… 21 On the other hand, the radiofrequency ranges from 3 MHz to 300 MH, and it promotes the ionic conduction of charged particles by the conduction losses. 22 Therefore, radiofrequency is more suitable for selectively heating ionic components. Dielectric heating is widely used in various food industry processes such as cooking, thawing, drying, sterilization, and extraction.…”

Section: Introductionmentioning

confidence: 99%

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Accelerating Sulfated Polysaccharides Extraction from Fast-Growing Ulva Green Seaweed by Frequency-Controlled Microwaves

Matsuzaki,

Tatsumi,

Sugiyama

et al. 2024

ACS Omega

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Ulva sp. is a type of green algae and is widely distributed in coastal areas around the world due to eutrophication. Effective utilization of Ulva sp. is expected for the establishment of carbon-neutral biochemical production. Microwave-assisted hydrothermal extraction is one of the most efficient ways of extracting highly functional polysaccharides called ulvan. Here, we demonstrate the importance of microwave frequency in enhancing ulvan extraction from Ulva meridionalis. We found that microwaves (2.45 GHz) selectively heat water solvent, while radio frequency (200 MHz) selectively heats ionic ulvan. Moreover, 2.45 GHz was more effective for extracting ulvan than 200 MHz. Then, we analyzed the conformational change in ulvan during microwave irradiation using in situ small-angle X-ray scattering. Microwaves initiated the loosening of ulvan bundles at temperatures lower than those of conventional heating. As a result, microwaves at 2.45 GHz selectively heat water and initiate ulvan structural change to enhance the extraction of ulvan from U. meridionalis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%