title: Encapsulation of Vitamin A Palmitate in Nanostructured Lipid Carrier (NLC)-Effect of Surfactant Concentration on the Formulation Properties.
abstract: OBJECTIVE
  Nanostructured lipid carrier (NLC) is a useful delivery system with high capacity for bioactive loading, and suitable stability for fortification of foods and beverages. The objective of the present work is to prepare vitamin A palmitate (vitA)-loaded NLC and to investigate surfactant concentration effect on physicochemical properties of prepared formulation.
  
  
  METHODS
  VitA-loaded NLC was prepared by hot homogenization method. Preciol as solid lipid, Octyloctanoate as liquid oil, and Poloxamer as surfactant were used to prepare the formulation. The effect of different concentrations of Poloxamer on particle size, particle size distribution, encapsulation efficiency and stability of vitA during storage were investigated. Fourier transform infrared spectra (FTIR) was exploited to study the possible bioactive-lipid complex formation.
  
  
  RESULTS
  NLCs stabilized with 6% Poloxamer showed significantly lower particle size and particle size distribution. The encapsulation efficiency of this formulation was 98.5% and it was stable during the storage at 25°C for two months.
  
  
  CONCLUSIONS
  This study suggests that surfactant significantly influences the final product properties. Our findings may pave the way of researchers to focus on fortifying the beverages with various lipophilic nutraceuticals.
authors: Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. ; Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
authors: Akram
authors: A
authors: Pezeshki
authors: Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
authors: Babak
authors: B
authors: Ghanbarzadeh
authors: Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran. ; Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
authors: Maryam
authors: M
authors: Mohammadi
authors: Department of Food Science and Technology, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
authors: Isa
authors: I
authors: Fathollahi
authors: Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
authors: Hamed
authors: H
authors: Hamishehkar
keywords: NLC; Nanoparticle; Nanostructured lipid carrier; Vitamin A palmitate