Rheology: A feasible tool to assess the viscoelastic behavior of natural ingredients

Rheology studies the flow and deformation of materials. Thus, the knowledge of the rheological and mechanical properties is important for product design, production, quality control, and for predicting shelf storage stability. Rheology studies can assist scientists in formulating optimal products....

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Autor principal:	John Jairo ROJAS CAMARGO
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2017
Materias:	Food processing and manufacture TP368-456 Pharmaceutical industry HD9665-9675
Acceso en línea:	https://doaj.org/article/afd8fc82cdbd4264a78cc915e40e1735
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spelling	oai:doaj.org-article:afd8fc82cdbd4264a78cc915e40e17352021-11-19T04:08:59ZRheology: A feasible tool to assess the viscoelastic behavior of natural ingredients0121-40042145-2660https://doaj.org/article/afd8fc82cdbd4264a78cc915e40e17352017-12-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/vitae/article/view/330455https://doaj.org/toc/0121-4004https://doaj.org/toc/2145-2660 Rheology studies the flow and deformation of materials. Thus, the knowledge of the rheological and mechanical properties is important for product design, production, quality control, and for predicting shelf storage stability. Rheology studies can assist scientists in formulating optimal products. Conventionally, a single-point viscosity tests are widely used, but they not adequate in characterizing the full rheological profile of these materials, and thus, it is better to generate the full viscosity curves to capture a wide range of material responses. There are several tests conducted to characterize a material. The first one implies plotting viscosity as a function of a stress ramp at constant temperature and within a specific time interval. Usually, at low stresses viscosity might remain constant, and then a critical stress point is reached were viscosity decreases abruptly. The magnitude of the resulting slope confirms the shear sensitivity of the material. Another highly used plot involves the viscosity versus shear rate. Usually, at low shear rates viscosity remains constant and then it decreases steadily. Further, from the stress ramp test the minimum shear stress required to initiate flow (Yield stress) is determined. The higher the yield value, the more readily a dispersion will maintain particles in suspension with minimal sedimentation. However, a low yield stress might be useful for a product to improve the sensorial properties such as the ease of spreading onto a surface forming a short-term thin layer. John Jairo ROJAS CAMARGOUniversidad de AntioquiaarticleFood processing and manufactureTP368-456Pharmaceutical industryHD9665-9675ENVitae, Vol 24, Iss 3 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Food processing and manufacture TP368-456 Pharmaceutical industry HD9665-9675
spellingShingle	Food processing and manufacture TP368-456 Pharmaceutical industry HD9665-9675 John Jairo ROJAS CAMARGO Rheology: A feasible tool to assess the viscoelastic behavior of natural ingredients
description	Rheology studies the flow and deformation of materials. Thus, the knowledge of the rheological and mechanical properties is important for product design, production, quality control, and for predicting shelf storage stability. Rheology studies can assist scientists in formulating optimal products. Conventionally, a single-point viscosity tests are widely used, but they not adequate in characterizing the full rheological profile of these materials, and thus, it is better to generate the full viscosity curves to capture a wide range of material responses. There are several tests conducted to characterize a material. The first one implies plotting viscosity as a function of a stress ramp at constant temperature and within a specific time interval. Usually, at low stresses viscosity might remain constant, and then a critical stress point is reached were viscosity decreases abruptly. The magnitude of the resulting slope confirms the shear sensitivity of the material. Another highly used plot involves the viscosity versus shear rate. Usually, at low shear rates viscosity remains constant and then it decreases steadily. Further, from the stress ramp test the minimum shear stress required to initiate flow (Yield stress) is determined. The higher the yield value, the more readily a dispersion will maintain particles in suspension with minimal sedimentation. However, a low yield stress might be useful for a product to improve the sensorial properties such as the ease of spreading onto a surface forming a short-term thin layer.
format	article
author	John Jairo ROJAS CAMARGO
author_facet	John Jairo ROJAS CAMARGO
author_sort	John Jairo ROJAS CAMARGO
title	Rheology: A feasible tool to assess the viscoelastic behavior of natural ingredients
title_short	Rheology: A feasible tool to assess the viscoelastic behavior of natural ingredients
title_full	Rheology: A feasible tool to assess the viscoelastic behavior of natural ingredients
title_fullStr	Rheology: A feasible tool to assess the viscoelastic behavior of natural ingredients
title_full_unstemmed	Rheology: A feasible tool to assess the viscoelastic behavior of natural ingredients
title_sort	rheology: a feasible tool to assess the viscoelastic behavior of natural ingredients
publisher	Universidad de Antioquia
publishDate	2017
url	https://doaj.org/article/afd8fc82cdbd4264a78cc915e40e1735
work_keys_str_mv	AT johnjairorojascamargo rheologyafeasibletooltoassesstheviscoelasticbehaviorofnaturalingredients
_version_	1718420514339291136

Rheology: A feasible tool to assess the viscoelastic behavior of natural ingredients

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