Hochkonzentrierte carotinoidhaltige Emulsionen

Ribeiro, Henelyta S.; Cruz, Robinson C.D.

doi:10.1002/cite.200403367

Cited by 2 publications

(1 citation statement)

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“…In addition to their health‐related properties (for example, enhancement of the immune response, inhibition of mutagenesis, blocking of free radical‐mediated reactions) and their antioxidant character, coloring features are the focus of interest (Bendich and Olson 1989; Britton 1995a, 1995b). Because of its extremely hydrophobic character, β‐carotene is insoluble in water and shows a poor bioavailability in crystalline form (Ribeiro and Cruz 2004).…”

Section: Introductionmentioning

confidence: 99%

β‐Carotene‐Loaded Nanostructured Lipid Carriers

Hentschel¹,

Gramdorf²,

Müller³

et al. 2008

Journal of Food Science

162

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Nanostructured lipid carriers (NLC) technology was used to disperse hydrophobic beta-carotene in an aqueous phase. NLC are lipid nanoparticles with a particle matrix consisting of a blend of a liquid and solid lipid. They were produced by melting the lipid blend at 80 degrees C and dispersing it into a hot emulsifier solution. The aim of this study was to extend the limited knowledge of melt-emulsified lipidic colloids in food systems and to evaluate the feasibility for further applications as functional ingredient in beverages. Physical stability of the NLC suspension was examined at 2 different storage temperatures by measuring the particle size with photon correlation spectroscopy (PCS) and laser diffractometry (LD). All particles containing sufficient amounts of emulsifier were smaller than 1 microm (LD diameter 100%) at a mean particle size of around 0.3 microm (LD) for 9 wk at 20 degrees C and at least 30 wk at 4 to 8 degrees C. Differential scanning calorimetry (DSC) was used to study the solid state of the lipids both in the beta-carotene loaded PGMS and in the NLC particles. Propylene glycol monostearate (PGMS) when dispersed as NLC recrystallized up to 98% during storage time. Within the regarded period of 7 mo no polymorph transitions were observed. Furthermore, stability of the beta-carotene in water dependent on NLC concentration and tocopherol content was measured photospectrometrically to get an estimation of the behavior of NLC in beverages.

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Section: Introductionmentioning

confidence: 99%