The aim of this research was to study spray drying as potential action to protect chlorophyllide fromenvironmental conditions for shelf-life extension and characterisation of the powders. Six formulations wereprepared with 7.5 and 10 g of carrier agents [gum Arabic (GA), maltodextrin (MA) and soybean proteinisolate (SPI)] . 100 mL of chlorophyllide solutions. The powders were evaluated for morphologicalcharacteristics (SEM), particle size, water activity, moisture, density, hygroscopicity, cold water solubility,sorption isotherms, colour and stability, during 90 days. All the powders were highly soluble, with solubilityvalues around 97%. A significant lower hygroscopicity was observed for GA powders, whilst the lower Xmvalues obtained by GAB equation fitting of the sorption isotherms was observed for the 7.5 g MA. 100 mLsamples. All formulations, but the 1 (7.5 g SPI . 100 mL of chlorophyllide), provided excellent stability to thechlorophyllide during 90 days of storage even at room temperature.[...]

Assessment of production efficiency, physicochemical properties and storage stability of spray dried chlorophyllide, a natural food colourant, using Gum Arabic, maltodextrin and soy protein isolate based carrier systems.

PITTIA, Paola;
2011-01-01

Abstract

The aim of this research was to study spray drying as potential action to protect chlorophyllide fromenvironmental conditions for shelf-life extension and characterisation of the powders. Six formulations wereprepared with 7.5 and 10 g of carrier agents [gum Arabic (GA), maltodextrin (MA) and soybean proteinisolate (SPI)] . 100 mL of chlorophyllide solutions. The powders were evaluated for morphologicalcharacteristics (SEM), particle size, water activity, moisture, density, hygroscopicity, cold water solubility,sorption isotherms, colour and stability, during 90 days. All the powders were highly soluble, with solubilityvalues around 97%. A significant lower hygroscopicity was observed for GA powders, whilst the lower Xmvalues obtained by GAB equation fitting of the sorption isotherms was observed for the 7.5 g MA. 100 mLsamples. All formulations, but the 1 (7.5 g SPI . 100 mL of chlorophyllide), provided excellent stability to thechlorophyllide during 90 days of storage even at room temperature.[...]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11575/11710
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