Nanoliposomes as Vehicles for Astaxanthin: Characterization, In Vitro Release Evaluation and Structure

Astaxanthin was encapsulated in nanoliposomes by a film dispersion-ultrasonic technique using soybean phosphatidyl choline. The astaxanthin-loaded nanoliposomes displayed advantages in the aspects of high encapsulation efficiency and less particle size with a remarkably homodisperse size distributio...

Full description

Saved in:
Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2018-10, Vol.23 (11), p.2822
Main Authors: Pan, Li, Wang, Hongyan, Gu, Keren
Format: Article
Language:English
Subjects:
Astaxanthin
Bioavailability
Calorimetry
characterization
Choline
Decomposition
Differential scanning calorimetry
Efficiency
Encapsulation
Fluidity
Fluorescence
Gravimetric analysis
in vitro release
Lipid bilayers
Lipids
Membrane fluidity
Membranes
Morphology
nanoliposomes
Particle size
Particle size distribution
Phosphatidylcholine
Size distribution
Soybeans
Stability analysis
structure
Thermal stability
Ultrasonic imaging
Ultrasonic methods
X-ray diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Astaxanthin was encapsulated in nanoliposomes by a film dispersion-ultrasonic technique using soybean phosphatidyl choline. The astaxanthin-loaded nanoliposomes displayed advantages in the aspects of high encapsulation efficiency and less particle size with a remarkably homodisperse size distribution. Based on X-ray diffraction and differential scanning calorimetry the analysis, it has been demonstrated that there could be interactions of astaxanthin with the lipid bilayer, resulting in the forming of astaxanthin-loaded nanoliposomes. The thermal gravimetric analysis revealed that the thermal stability of astaxanthin after encapsulation in nanoliposomes was remarkably enhanced as compared to astaxanthin alone. Furthermore, encapsulation could greatly enhance the water dispersibility of astaxanthin. This study also confirmed that encapsulation of astaxanthin in nanoliposomes could be an effective way to supply astaxanthin continuously in the body. The effects of astaxanthin incorporation on structural changes of the liposomal membrane were investigated through steady-state fluorescence measurements. This study revealed that the incorporation of astaxanthin into the lipid bilayer decreased membrane fluidity, but increased micropolarity in the membrane within a certain range of astaxanthin concentrations. Additionally, it indicated that the encapsulation of astaxanthin in the lipid bilayer could be applied to modulate the structural properties of membranes.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules23112822