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Propiedades reológicas y microestructurales de geles prebióticos de inulina

Authors: López-Castejón, María Luisa; Bengoechea Ruiz, Carlos; López Collado, S.; Aguilar García, José Manuel;

Propiedades reológicas y microestructurales de geles prebióticos de inulina

Abstract

La inulina es un carbohidrato no digerible que está presente en muchos vegetales, frutas y cereales. En la actualidad, se extrae industrialmente de la raíz de la achicoria y se utiliza ampliamente como ingrediente en alimentos funcionales (e.g. productos lácteos). En este trabajo de investigación se estudió el comportamiento reológico de geles de inulina, a diferentes contenidos del polisacárido (15, 20, 25 %) y sales de calcio (lactato o cloruro, a 0, 2,5 o 5 %). Se observó, de forma general un aumento en los módulos de cizalla de almacenamiento y viscoso (G’ y G’’, respectivamente) al incrementarse la concentración de inulina o la presencia de cloruro de calcio en la solución original a partir de la que se forma el gel. Por otra parte, ambos módulos generalmente disminuyeron con la presencia de lactato de calcio. La adición de cloruro de calcio, por tanto, permitirá la formación de un gel reforzado, con el beneficio adicional de la presencia de calcio, lo cual lo convierte en un buen punto de partida para la producción de alimentos funcionales.

La inulina és un carbohidrat no digerible que està present en molts vegetals, fruites i cereals. En l’actu-alitat, s’extreu industrialment de l’arrel de la xicoira i s’utilitza àmpliament com a ingredient en aliments funcionals (p.e. productes làctics). En aquest treball de investigació es va estudiar el comportament reològic de gels de inulina, a diferents continguts del polisacàrid (15, 20, 25%) i sals de calci (lactat o clorur, a 0, 2,5 o 5%). Es va observar, de forma general un augment en els mòduls de cisalla d’emmagatzematge i viscós (G’ i G’’, respectivament) a l’incrementar-se la concentració de inulina o la presència de clorur de calci en la solució original a partir de la qual es forma el gel. D’altra ban-da, tots dos mòduls generalment van disminuir amb la presència de lactat de calci. L’addició de clorur de calci, per tant, permetrà la formació d’un gel reforçat, amb el benefici addicional de la presència de calci, la qual cosa el converteix en un bon punt de partida per a la producció d’aliments funcionals.

Inulin is a non-digestible oligosaccharide that is pres-ent in many vegetables, fruits, and cereals. Nowadays, it is industrially extracted from chicory root and is widely used as an ingredient in functional foods (e.g. dairy products). In this research work, the rheological behavior of inulin gels was studied at different inulin (15, 20, 25 %) and calcium salts contents (lactate or chloride, at 0, 2.5 or 5 %). In general, an increase in the storage and viscous shear moduli (G ‘and G’ ‘, respec-tively) was observed when increasing inulin content or when Calcium chloride was present in the original solution that led to the formation of the gel. On the other hand, both viscoelastic moduli generally decreased in the presence of Calcium lactate. The addition of Calcium chloride, therefore, allows the formation of a reinforced gel with the additional benefit of including Calcium in the formulation, which would be a good starting point for the production of functional foods.

MICINN (España) and FEDER RTI2018-097 100-B-C21

MINECO (Spain) and FEDER CTQ2015-71164-P

Country
Spain
Keywords

Gel, Calcio, Reología, Inulina, Prebiótico, Inulin, Calci, Prebiotic, Calcium, Rheology, Prebiòtic

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green