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105937

DIELECTRIC PROPERTIES OF LIQUID FOODS AFFECTED BY MOISTURE CONTENTS AND TEMPERATURES

Article

Last updated: 04 Jan 2025

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Tags

Processing Engineering of Agricultural Products

Abstract

The use of microwave energy is of growing interest due to brief time, volumetric heating due to its penetration and reduced processing time, making it an attractive source of thermal energy. The main objective of the present work is to study the effect of milk and tomato, strawberries juices temperatures and moisture contents, dry basis, on dielectric constant, loss tangent, loss factor and penetration depth at 2450 MHz affecting heat and mass transfer by microwave. It was found that the dielectric constant increased by increasing moisture contents, temperatures and increasing the ability of material to store energy. Dielectric constant and dielectric loss factor are exponentially satisfied with coefficients of determinations between0.84-0.91 for tomato and strawberries. The dielectric constant of milk satisfied a linear form with coefficients of determinations between 0.88-0.97. The loss tangent is deceased with increasing the moisture content indicating the energy lost or dissipated by the material, and satisfied a power form with coefficients of determinations ranged between0.75-0.98 for all tested materials.

DOI

10.21608/mjae.2010.105937

Authors

First Name

T.H.

Last Name

Ghanem

MiddleName

-

Affiliation

Assoc. Prof., Agric. Eng.. Fac. of Agric., Al-Azhar Univ., Egypt.

Email

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City

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Orcid

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Volume

27

Article Issue

2

Related Issue

16013

Issue Date

2010-04-01

Receive Date

2020-08-01

Publish Date

2010-04-01

Page Start

688

Page End

698

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 27_Issue 2_Pages 688-698.pdf

PDF . 517.2kB

Link

https://mjae.journals.ekb.eg/article_105937.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=105937

Order

17

Type

Original Article

Type Code

1,326

Publication Type

Journal

Publication Title

Misr Journal of Agricultural Engineering

Publication Link

https://mjae.journals.ekb.eg/

MainTitle

DIELECTRIC PROPERTIES OF LIQUID FOODS AFFECTED BY MOISTURE CONTENTS AND TEMPERATURES

Details

Type

Article

Created At

23 Jan 2023