The porosity of carbohydrate-based spray-dried microparticles containing limonene stabilized by pea protein: Correlation between porosity and oxidative stability.
Curr Res Food Sci
; 5: 878-885, 2022.
Article
em En
| MEDLINE
| ID: mdl-35647558
In this study, the effects of different concentrations of pea protein concentrate (PPC) in the physical properties, porosity features, and oxidative stability of maltodextrin-based spray-dried microparticles containing orange essential oil (OEO, rich in limonene) were evaluated. The use of PPC resulted in spray-dried microparticles with encapsulation efficiencies of about 99 wt%, without visible pores, and relatively high glass transition temperature (66,4 °C) at Aw â¼ 0.3. The nitrogen adsorption and positron annihilation lifetime spectroscopy measurements showed that the increase of PPC concentration from 2.4 to 4.8 wt% (g of PPC/100 g of emulsion) did not affect the porosity features of the microparticles. These results were confirmed by the profiles of OEO retention and limonene oxide production, which were similar for both samples throughout four weeks of storage. Based on these results, we verified that the lower amount of PPC we tested can effectively protect the OEO during storage, showing that a relatively cheaper orange flavor powder can be produced using less protein.
DE, dextrose equivalent; DSC, differential scanning calorimetry; EE, encapsulation efficiency; Essential oil; FID, flame ionization detector; GC, gas chromatography; OEO, orange essential oil; PALS, positron annihilation lifetime spectroscopy; PPC, pea protein concentrate; PPC2.4, orange essential oil microparticles containing 2.4 g of pea protein concentrate/100 g of emulsion; PPC4.8, orange essential oil microparticles containing 4.8 g of pea protein concentrate/100 g of emulsion; Pea sativum L.; Plant protein; Pore size; Positron annihilation lifetime spectroscopy; SBET, specific surface area; SEM, scanning electron microscopy; Spray-drying; Tg, glass transition temperature; o-Ps, ortho-positrons; ρapparent, apparent density; ρtrue, true density; σo-Ps, average pore diameter; τo-Ps, ortho-positrons lifetime
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Curr Res Food Sci
Ano de publicação:
2022
Tipo de documento:
Article