Storage modulus of starch

Characterization of storage modulus of starch suspensions …

We present a methodology to predict the storage modulus (G'') of starch paste due to granule swelling, given the physical properties of the starch granule and temperature history. This was tested ...

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Full article: Rheological and structural properties of …

In Fig. 5A and 5B the changes in elastic or storage modulus (peak Gʹ) and viscous or loss modulus (peak Gʹʹ) of starches during heating are shown. Peak Gʹ values were much higher than peak Gʹʹ values for all starches …

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Influence of Storage Temperature on Starch Retrogradation and …

Thus, a drop (ΔG′) in the storage modulus from a temperature sweep test (e.g., from 30 °C to 95 °C) is probably due to the short-range starch intermolecular interactions formed during retrogradation, while the values of the storage modulus at 30 °C (G′30) and 95 °C (G′95) reflect the overall starch intermolecular interactions and ...

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Functionality and Applicability of Starch-Based Films: An Eco …

The mechanical characteristics, including tensile strength (TS), elongation at breakage (EAB), Young''s and storage modulus, and loss factor (tan δ), are crucial in packaging materials. ... (EAB%) and less stiff (TS and Young modulus) than potato starch films. They added that the mechanical resistance of the films is more related to the ...

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Influence of storage conditions on starch/PVA films containing ...

Transverse modulus of cellulose nanofibers (CN) determined for the first time by AFM. • CN efficiently reinforced starch/poly(vinyl alcohol) films for food packaging. • The low water diffusivity of films was explained by CN network, highlighted by SEM. • Increase of strength and modulus of films were dependent on the storage conditions. •

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Rheological Characteristics of Starch-Based Biodegradable Blends …

The frequency sweep tests showed that the thermoplastic starch sample exhibited a solid state at all temperatures tested, whereas both starch/PBAT and starch/PBAT/PLA blend samples exhibited viscoelastic liquid behavior after the melting temperature such that their loss modulus at low frequencies was greater than the …

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Full article: Structural properties of rice flour as affected by the ...

Both storage modulus (G'') and loss modulus (G") increased gradually as pea starch increased. The rheological properties of modified starch suggested that the formation of hydrogen bonds and better cross-linked networks were responsible for the structural changes.

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Full article: The structural characteristics of starches …

The viscoelastic properties also change during starch gelatinization and can be measured using a low deformation rheometer through the storage (G'') modulus that indicates elastic properties, loss …

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Viscoelastic Properties of Starch and Non-Starch ...

Concerning the control of retrogradation by adding guar gum, storage modulus (G'') for starch systems increases rapidly at very early stage of storage at 4°C. Short-term retardation of retrogradation is also suggested, because the gelled fraction in the system is reduced with the addition of guar gum (loss targent increase). This happens …

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Rheological Characteristics of Starch-Based Biodegradable Blends

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Full article: Recent advancements in cross-linked starches for food ...

The cross-linking of sorghum starch with .1% of epichlorohydrin increased its storage modulus (G′) and loss modulus (G′′) and decreased the Tan δ value. However, a higher concentration of epichlorohydrin (.5 and 1%) exhibited a decrease in G′ and G′′, and an increase in tan δ value. ... Moreover, starch reduces wheying-off during ...

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Characterization of storage modulus of starch suspensions …

DOI: 10.1016/J.FOODHYD.2021.107010 Corpus ID: 237658875; Characterization of storage modulus of starch suspensions during the initial stages of pasting using Stokesian dynamics simulations

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Storage retrogradation behavior of sorghum, maize and rice starch …

Storage modulus values (G′) were approximately 100 times larger than loss modulus values (G″) for initial starch gels; thus, rheological properties of tested gels indicated the more solid-like behavior of these materials (Table 4). Storage modulus increased during storage following a linear trend, but with differing slopes (Fig. 2).

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Dough rheological properties, texture, and structure of high …

1. Introduction. Potato (Solanum tuberosum L.) is the fourth largest food crop in the world, and the starch content is 70%–85% (dry basis) (FAO, 2020; Singh & Kaur, 2016) pared to starches from other plant sources, e.g. sweet potato, cassava, wheat, corn et al., potato starch exhibits outstanding viscosity, lower gelatinization temperature, …

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Effect of the addition of pregelatinized rice starch paste on the ...

Starch gel added with pregelatinized rice starch paste showed lower storage modulus. Abstract The effect of the addition of pregelatinized rice starch paste (PRSP) on the retrogradation of rice starch (RS) gels was investigated using rheometer, X-ray diffraction (XRD), differential scanning calorimetry (DSC), small angle X-ray …

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Structure and properties of soft rice starch

The storage modulus and loss modulus of soft rice … Pasting and rheological properties of starch from soft rice and two traditional rice varieties were analyzed. Soft rice starch was found to have a low pasting temperature of 67.2 °C, with a high system viscosity, including peak and trough viscosity.

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Structure and Physicochemical Properties of Starch

The storage modulus (G′), loss modulus (G″), and the loss tangent (tan δ = ratio of G″/G′) are commonly used to represent the viscoelastic properties of starch. …

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Modulating storage stability of binary gel by adjusting the …

The storage modulus, G′, reflected starch granule swelling due to water absorption and loss of intramolecular crystalline structure and the breakdown of the starch granules into a viscoelastic paste (Yousefi & Razavi, 2015). As shown in Fig. 3, the gelatinization process of the sample could be divided into three stages. In the early …

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Characterization of storage modulus of starch suspensions during …

The study will measure the storage modulus of different starch suspensions under heating at volume fractions between 0.4 < φ < 0.6, as these volume …

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A universal method to easily design tough and stretchable …

Hydrogels are soft materials that consist of physically or chemically cross-linked polymer networks and a large quantity of water. Hydrogels have a high water content and low elastic modulus (~100 ...

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Rheological Characteristics of Starch-Based …

The frequency sweep tests showed that the thermoplastic starch sample exhibited a solid state at all temperatures tested, whereas both starch/PBAT and starch/PBAT/PLA blend samples exhibited …

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Enhancement of Fe(III) to electro-response of starch hydrogel

Effects of concentrations of Fe 3+ on the storage modulus (G) of starch hydrogels. Figure 10 shows the G of hydrogels as a function of concentration of Fe 3+ under various electric fields. The three curves a, b, and c in the figure represent G of the hydrogels under the electric field of 0 kV mm −1, ...

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Variations in Dextrose Equivalent and Dynamic Rheology …

dextrins. In relation to rheological properties of starch, Jiang et al.[22] found that the storage modulus and loss modulus of mung bean starch increased with the increased pressure and the pressurized of mung bean starch gels were pseudoplastic non-Newtonian fluids. The dynamic storage modulus (Gʹ) is a measure of the energy stored in the ...

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Rheological, Pasting, and Textural Properties of Starch

The elastic or storage modulus (G′), viscous or loss modulus (G″), and loss tangent (tan δ) are the main parameters that describe the rheological behavior of …

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Methodology to predict the time-dependent storage modulus of starch ...

We present a methodology to predict the storage modulus (G '') of starch paste due to granule swelling, given the physical properties of the starch granule and temperature history.This was tested on experimental measurements of granule size distribution and G '' for 8% w/w suspensions of waxy maize, normal maize, waxy rice, …

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Rheological and gelling properties of atmospheric pressure cold …

Starch is immensely used in many industries such as paper, textile, cosmetics, pharmaceutical and food. Starch has an endless demand owing to its numerous applications in the food business, ... The power law fitted well for both storage modulus and loss modulus. However, it should be noted that in case of loss modulus, the power law …

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Effect of molecular structure changes during starch gelatinization …

Zeng, Chen, Chen, and Zheng (2021) also reported that the storage modulus and τf of starch gel were associated with the change in crystal structure during starch gelatinization, which significantly affects its extrusion process and self-supporting properties during 3D printing. It is clear that the molecular structure, especially the starch ...

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Rheology and rheological measurements of starch

The dynamic parameters G′ and G″ are called the storage or elastic modulus and the loss or viscous modulus. The ratio of G ″ and G ′ yields another …

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Gelatinization, Retrogradation and Gel Properties of Wheat Starch…

The storage modulus (G′), loss modulus (G″) ... The hardness of starch gel in storage is highly correlated to retrogradation and can be used to evaluate the degree of retrogradation. It was observed that all the tested starch-containing gels hardened over the 14-day storage. The degree of hardening decreased with the increase in LWBAX ...

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Rheological, Pasting, and Textural Properties of Starch

Starch shows different deformation and flow characteristics under the action of external forces, which is called the rheological behavior of starch [].The elastic or storage modulus (G′), viscous or loss modulus (G″), and loss tangent (tan δ) are the main parameters that describe the rheological behavior of starch.A tan δ value of <1 means a …

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Dough rheological properties from frequency sweep test. Storage modulus ...

Moreover, Renoldi et al. [57] stated that adding Psyllium fiber led to a lower peak value of storage modulus (G'') of dough, revealing differences in starch swelling of starch granules.

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Prediction of Swelling and Pasting Behavior of Starch ...

Stokesian dynamics also describes the storage modulus of fractionated starch granules for volume fractions between 0.4 - 0.5 The average granule size of starch in presence of sucrose was initially increasing and then decreasing with maximum swelling at 5% and 10% sucrose concentration for NMS and WRS. The average granules size …

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The filling effects of starch-based emulsion microgels in gel …

As shown in Fig. 3 b, the storage modulus (G′) for all samples exceeded the loss modulus (G″), indicating solid-like characteristics, and the linear viscoelastic region remained relatively unchanged across all samples. The control group, which did not contain any emulsion droplets but only OSA starch added to a dispersion of natural starch ...

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Characterization of storage modulus of starch suspensions during …

We present a methodology to predict the storage modulus (G'') of starch paste due to granule swelling, given the physical properties of the starch granule and …

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Effects of starch properties on rheological characteristics of starch ...

The addition of starch resulted in a decrease in cooking loss and increase in both storage modulus (G ′) and loss modulus (G ′′). Adding starch also reduced the leaching out from meat protein. Potato SM complex yielded the highest cooking loss among all the SM complexes used.

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Physicochemical, thermal and rheological properties of starches ...

According to Hoover water holding capacity and solubility of starch in water is strongly affected by interactions between starch polymer chains within amorphous and …

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Physical and mechanical properties of alginate based composite gels

Stronger and brittle gels (Young''s modulus Alg+20% starch = 7.7 × 10 4 kPa, and Alg+30% starch = 6.2 × 10 4 kPa. Strain at failure (80% deformation) Alg+20% starch = 10% and Alg+30%starch = 2.5%) (filled gel) ... Silva et al. (2014) reported that the blending of soy protein isolate with alginate beads increased storage modulus (E'') of the ...

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Storage modulus and loss modulus of starch/cellulose …

These rheological properties, including storage modulus (G′) and loss modulus (G′′) of starch-based pellets (Fig. 5a) and foams (Fig. 5b), can provide valuable insights into the morphologies ...

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Removing surface proteins promote the retrogradation of wheat starch ...

Removing proteins increased the storage modulus and setback viscosity of starch paste. • Recrystallinity of NaOH-treated and SDS-treated starch gels was higher than native one. • SDS treatment promoted retrogradation enthalpy from 3.5 J/g to 5.3 J/g. • Firmness increased from 261g for native starch to 357g for SDS-treated starch after ...

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Effects of konjac glucomannan and freezing on thermal properties ...

The storage modulus (G′), loss modulus (G″) and loss tangent (tan δ) of wheat starch were obtained by frequency sweep measurements. The dynamic rheological behaviors of native wheat starch and frozen wheat …

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Physicochemical Properties of Starch | SpringerLink

Using dynamic measurements, we can obtain several key rheological parameters of starch matrices such as storage modulus G′ (Pa) and loss modulus G″ …

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Thermal Properties and Dynamic Rheological Characterization of

The storage modulus, loss modulus, damping factor and complex viscosity as a function of frequency (ω) of the dioscorea gels, as well as the onset temperature (To), peak gelatinization temperature (Tp), end of gelatinization (TC), and gelatinization enthalpy of the starches were determined by standard procedures.

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Storage modulus of starch

Characterization of storage modulus of starch suspensions …

Full article: Rheological and structural properties of …

Influence of Storage Temperature on Starch Retrogradation and …

Functionality and Applicability of Starch-Based Films: An Eco …

Influence of storage conditions on starch/PVA films containing ...

Rheological Characteristics of Starch-Based Biodegradable Blends …

Full article: Structural properties of rice flour as affected by the ...

Full article: The structural characteristics of starches …

Viscoelastic Properties of Starch and Non-Starch ...

Rheological Characteristics of Starch-Based Biodegradable Blends

Full article: Recent advancements in cross-linked starches for food ...

Characterization of storage modulus of starch suspensions …

Storage retrogradation behavior of sorghum, maize and rice starch …

Dough rheological properties, texture, and structure of high …

Effect of the addition of pregelatinized rice starch paste on the ...

Structure and properties of soft rice starch

Structure and Physicochemical Properties of Starch

Modulating storage stability of binary gel by adjusting the …

Characterization of storage modulus of starch suspensions during …

A universal method to easily design tough and stretchable …

Rheological Characteristics of Starch-Based …

Enhancement of Fe(III) to electro-response of starch hydrogel

Variations in Dextrose Equivalent and Dynamic Rheology …

Rheological, Pasting, and Textural Properties of Starch

Methodology to predict the time-dependent storage modulus of starch ...

Rheological and gelling properties of atmospheric pressure cold …

Effect of molecular structure changes during starch gelatinization …

Rheology and rheological measurements of starch

Gelatinization, Retrogradation and Gel Properties of Wheat Starch…

Rheological, Pasting, and Textural Properties of Starch

Dough rheological properties from frequency sweep test. Storage modulus ...

Prediction of Swelling and Pasting Behavior of Starch ...

The filling effects of starch-based emulsion microgels in gel …

Characterization of storage modulus of starch suspensions during …

Effects of starch properties on rheological characteristics of starch ...

Physicochemical, thermal and rheological properties of starches ...

Physical and mechanical properties of alginate based composite gels

Storage modulus and loss modulus of starch/cellulose …

Removing surface proteins promote the retrogradation of wheat starch ...

Effects of konjac glucomannan and freezing on thermal properties ...

Physicochemical Properties of Starch | SpringerLink

Thermal Properties and Dynamic Rheological Characterization of

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