Cambios en las propiedades de gelatinización y pasta de varios almidones (trigo, maíz y maíz ceroso) por la adición de fibrillas de celulosa bacteriana.

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dc.coverageDOI: 10.1016/j.foodhyd.2018.02.023
dc.creatorDíaz-Calderón, P.
dc.creatorMacNaughtan, B.
dc.creatorHill, S.
dc.creatorFoster, T.
dc.creatorEnrione, J.
dc.creatorMitchell, J.
dc.date2018
dc.date.accessioned2025-11-18T19:40:24Z
dc.date.available2025-11-18T19:40:24Z
dc.description<p>The aim of this work was to analyse the effect of bacterial cellulose fibrils (BCF) on the gelatinisation profile and pasting properties of starches from different sources (wheat, maize and waxy maize) and amylose contents. Blends of 8% starch with different BCF levels (0, 0.5, 2, 6 and 10% based on the dry weight of starch) were prepared and tested by Rapid Visco-Analysis (RVA), Differential Scanning Calorimetry (DSC) and both Optical and Polarized Light Microscopy. Results showed that BCF produce a significant modification of pasting properties. The pasting temperature was reduced but viscosities (peak, final, trough, breakdown and final) increased. The reduction in pasting temperature at the highest BCF addition was 20 °C higher for maize and wheat starches but only 2 °C higher for waxy maize starch. In contrast to the pasting temperature, the gelatinisation temperature by DSC for all three starches slightly varied upon BCF addition, but the gelatinisation enthalpy was reduced to a greater extent than values reported for the addition of other hydrocolloids to starch blends. Optical and polarized light microscopy showed the presence of domains rich in starch and highly aggregated BCF in all three starches evaluated. The increase in viscosity and decrease in pasting temperature are discussed in terms of changes in starch concentrations in the starch rich domain. These results open interesting perspectives in the use of bacterial cellulose and plant cell walls to design novel bio-composites to structure foods.</p>eng
dc.descriptionThe aim of this work was to analyse the effect of bacterial cellulose fibrils (BCF) on the gelatinisation profile and pasting properties of starches from different sources (wheat, maize and waxy maize) and amylose contents. Blends of 8% starch with different BCF levels (0, 0.5, 2, 6 and 10% based on the dry weight of starch) were prepared and tested by Rapid Visco-Analysis (RVA), Differential Scanning Calorimetry (DSC) and both Optical and Polarized Light Microscopy. Results showed that BCF produce a significant modification of pasting properties. The pasting temperature was reduced but viscosities (peak, final, trough, breakdown and final) increased. The reduction in pasting temperature at the highest BCF addition was 20 °C higher for maize and wheat starches but only 2 °C higher for waxy maize starch. In contrast to the pasting temperature, the gelatinisation temperature by DSC for all three starches slightly varied upon BCF addition, but the gelatinisation enthalpy was reduced to a greater extent than values reported for the addition of other hydrocolloids to starch blends. Optical and polarized light microscopy showed the presence of domains rich in starch and highly aggregated BCF in all three starches evaluated. The increase in viscosity and decrease in pasting temperature are discussed in terms of changes in starch concentrations in the starch rich domain. These results open interesting perspectives in the use of bacterial cellulose and plant cell walls to design novel bio-composites to structure foods.spa
dc.identifierhttps://investigadores.uandes.cl/en/publications/1174f3d5-e7b4-418e-8734-fa7c85c3124c
dc.identifier.urihttps://repositorio.uandes.cl/handle/uandes/51263
dc.languageeng
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourcevol.80 (2018) p.274-280
dc.subjectAdvanced materials
dc.subjectBacterial cellulose
dc.subjectGelatinisation
dc.subjectPasting properties
dc.subjectStarch
dc.subjectMateriales avanzados
dc.subjectCelulosa bacteriana
dc.subjectGelatinización
dc.subjectPegar propiedades
dc.subjectAlmidón
dc.titleCambios en las propiedades de gelatinización y pasta de varios almidones (trigo, maíz y maíz ceroso) por la adición de fibrillas de celulosa bacteriana.spa
dc.titleChanges in gelatinisation and pasting properties of various starches (wheat, maize and waxy maize) by the addition of bacterial cellulose fibrilseng
dc.typeArticleeng
dc.typeArtículospa
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