Solution of an inverse problem for mass transfer in a drying process in a magnetic field

Memmedov, Arif; Kelbaliyev, G. I.; Alisoy, G.T.

doi:10.1080/17415977.2010.492507

Cited by 8 publications

(5 citation statements)

References 13 publications

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“…Among the lowest MR values was obtained for the samples pretreated by MF + H 2 O. This can be explained by the effect of the magnetic field that affects the porosity of the material and as a result, considerably shortens the drying time such as in the studies by Memmedov et al [ 36 ]. A CEF and CEF + H 2 O showed the highest MR in those two groups (processed with/without water).…”

Section: Resultsmentioning

confidence: 97%

“…A magnetic field (MF) has been used to accelerate the germination and growth of various seeds, including sunflower seeds [ 33 ] as well as in the freezing of plant materials due to its positive effect on the formation of small ice crystals and enhanced freezing rate [ 34 , 35 ]. Moreover, this method was used during convective drying in order to change its properties and accelerate water removal during drying [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Nonthermal Pretreatment on the Drying Kinetics and Quality of Black Garlic

et al. 2023

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Black garlic is obtained from regular garlic (Allium sativum L.) through the aging process and consequently gains many health-promoting properties, including antidiabetic and antioxidant. However, the material is still prone to microbiological deterioration and requires a long time to dry due to its properties. Therefore, this study aimed to investigate the effect of various drying methods on the quality of black garlic as well as determine the influence of selected nonthermal pretreatments on the drying kinetics and quality of black garlic, which is especially important in the case of the materials that are difficult to dry. The Weibull model was chosen to describe drying kinetics. Additionally, color, water activity together with antioxidant activity, phenolic compounds, and antidiabetic potential were determined. This study found that the application of a pulsed electric field (PEF), a constant electric field (CEF) as well as a magnetic field (MF) significantly reduced the time of drying (by 32, 40, and 24 min for a PEF, a CEF, and a MF, respectively, compared to combined drying without the pretreatment), and resulted in high antidiabetic potential. However, the highest content of phenolic compounds (1123.54 and 1125.36 mg/100 g dm for VMD125 and CD3h-VMD, respectively) and antioxidant capacity (ABTS = 6.05 and 5.06 mmol Trolox/100 g dm for VMD500 and CD6h-VMD, respectively) were reported for black garlic treated by vacuum-microwave drying and combined convective pre-drying followed by vacuum-microwave drying. Overall, the nonthermal pretreatment decreased the time of drying and showed very good efficiency in maintaining the antidiabetic potential of black garlic, especially in the case of the materials pretreated by a constant electric field (IC50 = 99 and 56 mg/mL, for α-amylase and α-glucosidase, respectively).

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

The Effect of Nonthermal Pretreatment on the Drying Kinetics and Quality of Black Garlic

et al. 2023

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“…The numerous experimental and practical results [13][14][15] showed that the molecular diffusion coefficient of a moisture in porous media is fluctuated within the ranges of Thus, as a result of moistening, a granule surface becomes friable and loses strength, which leads to a deformation, to surface deterioration and adherence of granules. First of all, such state has been connected with moisture effective diffusion depending on porosity of structure.…”

Section: Model Of Natural Moistening Of Granulesmentioning

confidence: 99%

Investigation of Granulation Process and Influence of Intensifying Additions on Strength of Superphosphate Granules

Келбалиев¹,

Hasanova²,

Самедов³

2018

Theoretical & Applied Science

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“…So, the effect of external fields on the drying process of porous materials has been considered and this effect has been investigated theoretically and experimentally in many studies. An inverse problem on drying process has been analyzed by considering the deformation parameters of the dried material and magnetic field in the determination of the effective coefficient of the moisture [19]. The effect of the measured moisture and the electromagnetic wave parameters on the drying kinetics have been investigated empirically for microwave drying of a capillary porous packed bed (glass beads + water), and some comments on the electromagnetic field distribution and dispersion of the moisture and the heat in the capillary porous medium have been presented [11].…”

Section: Introductionmentioning

confidence: 99%

Drying Process of Apple Slices in Low Frequency Electromagnetic Field

Memmedov*¹,

Koseoglu*²,

Karadağ³

2019

IJRTE

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In this study, the heat and mass transfer equations for porous organic materials have been derived by using “two port model” and “pi theorem”, and consistency of the derived equations were analyzed by considering the processes with and without electromagnetic waves. Some theoretical and experimental investigations have been performed to determine the effect of electromagnetic fields on the drying process of porous materials and calculation of concentration profiles. Also the molecular and diffusion coefficients have been analyzed empirically by using experimental results. In the experiments, apple slices were used as porous organic material. The samples were exposed to electromagnetic waves at different frequency values. For better analysis of drying process, the experiments were conducted at different temperatures and periods. It was observed that results obtained by derived semi-empirical equations have been agreed with experimental results. It is seen that the diffusion coefficient has important role in drying process and should be determined experimentally for accurate results.

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Solution of an inverse problem for mass transfer in a drying process in a magnetic field

Cited by 8 publications

References 13 publications

The Effect of Nonthermal Pretreatment on the Drying Kinetics and Quality of Black Garlic

The Effect of Nonthermal Pretreatment on the Drying Kinetics and Quality of Black Garlic

Investigation of Granulation Process and Influence of Intensifying Additions on Strength of Superphosphate Granules

Drying Process of Apple Slices in Low Frequency Electromagnetic Field

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