| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 604998 | Food Hydrocolloids | 2012 | 7 Pages |
In this study, β-carotene emulsions were prepared using a two-stage homogenization process and adsorption of chitosan to anionic droplets coated with soybean soluble polysaccharides (SSPS). Effects of the molecular weights of chitosan on the stability and rheological properties of β-carotene emulsions were investigated. Results demonstrated that the ζ-potential, particle size and rheological properties of emulsions were greatly dependent on the chitosan molecular weight. It was found that the particle size of SSPS-stabilized emulsions increased with the rise of chitosan molecular weight at higher chitosan concentrations (>0.2 wt%). Chitosan molecular weight had a significant impact on the heat and light stability of β-carotene in emulsions. SSPS-stabilized emulsion with the adsorption of medium molecular weight-chitosan (MM-chitosan) was more stable than those with the adsorption of low and high molecular weight-chitosan (LM-chitosan and HM-chitosan). Dynamic oscillatory shear tests indicated that the viscoelasticity could be enhanced by the adsorption of higher molecular weight of chitosan onto the SSPS-coated droplet surfaces.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Droplet characteristics were greatly dependent on the chitosan molecular weights. ► Rheological properties were improved by of higher molecular weight-chitosan. ► Heat and light stability of β-carotene emulsion depend on chitosan molecular.
