Effects of temperature and concentration on the rheological properties of mucilage extracted from Pereskia aculeata Miller

Junqueira, Luciana Affonso; Silva, Vanelle Maria da; Amaral, Tatiana Nunes; Prado, Mônica Elisabeth Torres; Resende, Jaime Vilela de

doi:10.1007/s11694-019-00175-8

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…Moreover, an inverse relationship between viscosity and temperature was observed, that is, the viscosity decreased with increasing temperature. This observation is because of the higher molecular movement at elevated temperatures as explained in the literature [ 14 ].…”

Section: Resultsmentioning

confidence: 77%

“…This was performed by the computer software provided by the supplier. In addition, the power-law model (Equation (1)) was used to compute the flow behavior index and consistency coefficient values of the extracts [ 14 ].

where γ ° is the shear rate (s −1 ), k is the consistency coefficient (mPa·s), n is the dimensionless flow behavior index, and τ is the shear stress (mPa).…”

Section: Methodsmentioning

confidence: 99%

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Rheological Behavior of Glycyrrhiza glabra (Licorice) Extract as a Function of Concentration and Temperature: A Critical Reappraisal

Nasiri

Gavahian

Majzoobi

et al. 2020

Foods

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In the present study, rheological properties of twelve different licorice root extracts were evaluated using a rotational viscometer as a function of soluble solids content (15–45 °Bx) and temperature (30–70 °C). Response Surface Methodology was used to understand the relationships between the parameters. The experimental data were then fit into mathematical models. The results, for the first time, revealed that the licorice solutions had non-Newtonian shear-thinning behaviors with flow behavior indexes of 0.24 to 0.91, depending on the licorice extract samples, temperature, and °Bx. These observations were different from those reported in the literature and the present study elaborated on reasons for such observations. Further, the shear-thinning behavior generally increased by increasing the °Bx and decreasing the temperature. In addition, the power-law model was found to be suitable for predicting the experimental data. The newly revealed information can be particularly important in designing the unit operations for licorice extract processing.

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Section: Resultsmentioning

confidence: 77%

where γ ° is the shear rate (s −1 ), k is the consistency coefficient (mPa·s), n is the dimensionless flow behavior index, and τ is the shear stress (mPa).…”

Section: Methodsmentioning

confidence: 99%