Physical and Viscoelastic Properties of Different Moisture Content Highland Barley Kernels

Zhu, Yingdan; Fu, Nan; Li, Dong; Wang, Lijun; Chen, Xiao

doi:10.1515/ijfe-2017-0186

Cited by 11 publications

(3 citation statements)

References 23 publications

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“…The creep behavior of the rind was evaluated; experimental and fitted creep compliance is shown in Figure 4b, and model parameters determined based on Equation ( 2) are summarized in Table 3. The creep behavior of the IN1 rinds (Figure 4b) showed instantaneous deformation, the elastic response, and viscous deformation, as verified by the literature [64]. The results (Figure 4b) revealed that the Della variety had significantly lower initial creep compliance (C 0 ) than its corresponding RG, which indicates an increase in deformation resistance.…”

Section: Creep Behavior Of Rindssupporting

confidence: 75%

Lodging Variability in Sorghum Stalks Is Dependent on the Biomechanical and Chemical Composition of the Stalk Rinds

Mengistie,

Bokros,

DeBolt

et al. 2024

Crops

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Stalk lodging contributes to significant crop yield losses. Therefore, understanding the biomechanical strength and structural rigidity of grain stalks can contribute to improving stalk lodging resistance in crops. From the structural constituents of the stalk, the rind provides the principal structure, supporting cells against tension and bending loads. In this work, the biomechanical and viscoelastic behavior of the rind from the internodes of two sweet sorghum varieties (Della and REDforGREEN (RG)), grown in two different growing seasons, were evaluated by three-point micro-bending tests using a dynamic mechanical analyzer (DMA). In addition, the chemical composition of rinds and the microfibril angle (MFA) of the cell wall were determined using XRD. The results revealed that the biomechanical behavior of Della varieties was stiffer and more resistant to loads than that of RG varieties. Two features of the rind biomechanical properties, flexural modulus (FM) and flexural strength (FS), showed a significant reduction for RG. Particularly, a reduction in FS of 16–37% and in FM of 22–41% were detected for RG1. Changes in the stalks’ rind biomechanical properties were attributed to cell wall components. Total lignin and glucan/cellulose contents were positively correlated with the FM and FS of the rind. Subsequently, an increase in the two cell wall components drove an increase in stiffness. Furthermore, the MFA of the rind was also found to influence the rind strength.

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Section: Creep Behavior Of Rindssupporting

confidence: 75%

Lodging Variability in Sorghum Stalks Is Dependent on the Biomechanical and Chemical Composition of the Stalk Rinds

Mengistie,

Bokros,

DeBolt

et al. 2024

Crops

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“…Te experimental results of the creep properties of highland barley kernels show that the creep strain increases with the increase in moisture content. For the dynamic viscoelastic analysis of grains, the generalized Maxwell model can better ft the experimental data of stress relaxation and the curve of relaxation modulus [69,70]. However, how to combine the viscoelasticity of grains in actual production and how to dynamically analyze the changes in the mechanical behavior of grains under external loads are still important problems that researchers need to solve urgently.…”

Section: Dynamic Viscoelasticitymentioning

confidence: 99%

Determination Methods and Influencing Factors of Grain Mechanical Properties

Gao,

Tian,

Xue

et al. 2024

Journal of Food Quality

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Grain is extremely vulnerable to external loads during production and processing, resulting in the deterioration of grain quality. Deteriorated grain not only affects the economic value of grain but also affects the safety of storage. This has a very important relationship with the biomechanical properties of grains. It is of great significance to explore the mechanical properties of grain under different conditions and analyze the relationship between its physical and chemical properties and mechanical properties for improving its processing and eating quality. In this paper, the research methods of the mechanical properties of grains are reviewed. Various factors influencing the mechanical properties of cereals were analyzed. The relationship between the internal organizational structure of grain and its mechanical properties was discussed. This paper puts forward the shortcomings in the current research on the mechanical properties of grains and puts forward the prospect and analysis of its importance in future development in order to provide a reference for reducing crushing in the grain processing process.

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“…show superposition. Zhu et al [24] applied TTS to predict the highland barley kernels' creep properties. TTS was applicable at low temperatures.…”

Section: Frequency-temperature Superpositionmentioning

confidence: 99%

Dynamic Viscoelastic Behavior of Maize Kernel: Application of Frequency–Temperature Superposition

Sheng,

Wu,

2024

Foods

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Maize kernels were treated using two varieties of drying methodologies, namely combined hot air- and vacuum-drying (HAVD) and natural drying (ND). We performed frequency sweep tests, modified Cole–Cole (MCC) analysis and frequency–temperature superposition (FTS) on these kernels. The kernels’ elastic and viscous properties for ND were higher than those for HAVD. The heterogeneous nature of maize kernel may account for the curvature in MCC plot for the kernel treated by HAVD 75 °C and the failure of FTS. MCC analysis was more sensitive than FTS. The kernel treated by HAVD 75 °C demonstrated thermorheologically simple behavior across the entire temperature range (30–45 °C) in both MCC analysis and FTS. The frequency scale for the kernel treated using HAVD 75 °C was broadened by up to 70,000 Hz. The relaxation processes in the kernel treated by HAVD 75 °C were determined to be mainly associated with subunits of molecules or molecular strands. The data herein could be utilized for maize storage and processing.

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Physical and Viscoelastic Properties of Different Moisture Content Highland Barley Kernels

Cited by 11 publications

References 23 publications

Lodging Variability in Sorghum Stalks Is Dependent on the Biomechanical and Chemical Composition of the Stalk Rinds

Lodging Variability in Sorghum Stalks Is Dependent on the Biomechanical and Chemical Composition of the Stalk Rinds

Determination Methods and Influencing Factors of Grain Mechanical Properties

Dynamic Viscoelastic Behavior of Maize Kernel: Application of Frequency–Temperature Superposition

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