Assessing the moisture migration during microwave drying of coal using low-field nuclear magnetic resonance

He, Li; Lin, Baiquan; Hong, Youshi; Liu, Tong; Huang, Zhanbo; Wang, Rui; Zheng, Wang

doi:10.1080/07373937.2017.1349136

Cited by 41 publications

(16 citation statements)

References 64 publications

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“…Previous researches have also confirmed that LF-NMR measurements were associated with quality parameters, such as WHC, drip loss, color, and so on [16,27,28]. In the current study, the relationship between LF-NMR relaxation parameters and quality indexes was investigated during refrigerated storage (Table 2).…”

Section: Linear Regression Analysismentioning

confidence: 88%

Low-Field NMR and MRI to Analyze the Effect of Edible Coating Incorporated with MAP on Qualities of Half-Smooth Tongue Sole (Cynoglossus Semilaevis Günther) Fillets during Refrigerated Storage

Shen

Liu

et al. 2018

Applied Sciences

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Featured Application: The monitoring of quality characteristics of Half-smooth tongue sole (HTS, Cynoglossus semilaevis Günther) is essential during refrigerated period based on the edible coating incorporated with MAP treatment, which has not displayed in the previous literatures. Meanwhile, the low-field nuclear magnetic resonance (LF-NMR) and magnetic resonance imaging (MRI) technology has a potential development to assess the quality of aquatic products, which is applied to assess the water distribution and migration of HTS fillets during 24-day storage. This study demonstrate that results of LF-NMR and MRI have the close connection with the physicochemical parameter of HTS fillets and can be applied to monitor water migration in a noninvasive and fast way.Abstract: Nondestructive and fast measurement and characterization of fish is highly desired during various processing treatments. This research investigated the effectiveness of low field LF-NMR and MRI as fast monitoring techniques to estimate the qualities of half-smooth tongue sole fillets treated with edible coating combined with modified atmosphere packaging during refrigeration. T 2 relaxation spectra showed three peaks representing bound water (T 21 ), immobile water (T 22 ), and free water (T 23 ), respectively. pT 22 accounted for the largest proportion of three types of water, followed by pT 23 . The weighted MRI provided the internal structure information associated with different samples, indicting the combination of edible coating and MAP (70% CO 2 + 30% N 2 ) is the best performance in the maintenance of qualities and freshness of HTS fillets. All results demonstrated that the combination of LF-NMR and MRI as fast and nondestructive methods have great potential to monitor qualities deterioration and predict shelf life in of HTS fillets during refrigerated storage.

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Section: Linear Regression Analysismentioning

confidence: 88%

Low-Field NMR and MRI to Analyze the Effect of Edible Coating Incorporated with MAP on Qualities of Half-Smooth Tongue Sole (Cynoglossus Semilaevis Günther) Fillets during Refrigerated Storage

Shen

Liu

et al. 2018

Applied Sciences

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“…In addition, NMR can also measure the total porosity of a coal sample. Li et al established a standard equation reflecting the relationship between the total porosity and the fluid volume where Ø T is the total porosity of the coal sample; V ′ is the solution volume, cm 3 ; V is the volume of the coal sample, cm 3 ; and S , which is the integral area of the T 2 spectrum, can be calculated by eq where T i is the time in the NMR spectrum; and A is the amplitude corresponding to T i .…”

Section: Resultsmentioning

confidence: 99%

Experimental Research on Water Migration-Damage Characteristics of Lignite under Microwave Heating

et al. 2021

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Microwave has attracted much attention with respect to coal drying, especially improving the performance of lignite. In this study, the characteristics of dehydration dynamics and changes in the physical structure of lignite under microwave radiation were investigated. The results show that the change process of temperature and moisture is phased in the microwave dehydration period (0−180 °C). Moreover, the change in the moisture content of lignite is actually the coupled migration of liquid water and water vapor, and the pressure gradient and temperature gradient formed by uneven evaporation of water under high-power microwave heating not only promote the formation, development, and connection of pores and fractures but also contribute to the movement of water, especially partially liquid water which can directly migrate to the coal surface. Higher moisture content means more intense water movement under microwave heating as well as more significant lignite drying and structural damage effects. The research discussed the correlation between moisture movement and lignite structure, which can provide constructive insight into the efficient application of microwave drying and heat-driven cracking technology to coal.

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“…Immobilized water usually exists in vacuoles and intercellular spaces, and the chemical exchange of protons occurs between water and the dilute solution that is composed of water and sugar or other low‐molecular‐weight compounds. Free water, which has the longest relaxation time, presents the best mobility and usually exists on surfaces and between fibrous tissues (Li, Lin, et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Effects of radiation temperature on dehydration and moisture migration in banana slices during far‐infrared radiation drying

Shi

Liu

et al. 2020

J. Food Process. Preserv.

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Assessing the moisture migration during microwave drying of coal using low-field nuclear magnetic resonance

Cited by 41 publications

References 64 publications

Low-Field NMR and MRI to Analyze the Effect of Edible Coating Incorporated with MAP on Qualities of Half-Smooth Tongue Sole (Cynoglossus Semilaevis Günther) Fillets during Refrigerated Storage

Low-Field NMR and MRI to Analyze the Effect of Edible Coating Incorporated with MAP on Qualities of Half-Smooth Tongue Sole (Cynoglossus Semilaevis Günther) Fillets during Refrigerated Storage

Experimental Research on Water Migration-Damage Characteristics of Lignite under Microwave Heating

Effects of radiation temperature on dehydration and moisture migration in banana slices during far‐infrared radiation drying

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