1. Multifunctional green supramolecular solvents for cost-effective production of highly stable astaxanthin-rich formulations from Haematococcus pluvialis
- Author
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Violeta Rodriguez-Ruiz, Virginie Gueguen, Graciela Pavon-Djavid, José Ángel Salatti-Dorado, Soledad Rubio, and Diego García-Gómez
- Subjects
Supramolecular chemistry ,Xanthophylls ,Microscopy, Atomic Force ,01 natural sciences ,Antioxidants ,Analytical Chemistry ,chemistry.chemical_compound ,0404 agricultural biotechnology ,Dynamic light scattering ,Chlorophyceae ,Astaxanthin ,Amphiphile ,Human Umbilical Vein Endothelial Cells ,Humans ,Drug Carriers ,Haematococcus pluvialis ,Aqueous solution ,Coacervate ,biology ,Plant Extracts ,Cryoelectron Microscopy ,010401 analytical chemistry ,04 agricultural and veterinary sciences ,General Medicine ,biology.organism_classification ,Lipids ,040401 food science ,Nanostructures ,0104 chemical sciences ,Chemical instability ,Chemical engineering ,chemistry ,Dietary Supplements ,Solvents ,Reactive Oxygen Species ,Food Science - Abstract
The interest of food industry to merchandise natural astaxanthin is growing up. However, it confronts scientific and technological challenges mainly related to its poor water solubility and chemical instability. Here, we present a new quick and efficient green process to simultaneously extract, encapsulate and stabilize astaxanthin from Haematococcus pluvialis. The process is based on the hitherto unexplored combination of supramolecular solvents (SUPRAS), nanostructured liquids generated from amphiphiles through sequential self-assembly and coacervation, and nanostructured lipid carriers (NLCs). These novel nanosystems were characterized by means of dynamic light scattering, AFM and cryoSEM, revealing spherical particles of ∼100 nm. Their antioxidant activity was measured by ORAC (20.6 ± 3.9 μM TE) and α-TEAC (2.92 ± 0.58 µM α-TE) assays and their in vitro capacity to inhibit ROS by DHE probe. Results showed that the SUPRAS-NLCs proposed yield high extraction and encapsulation efficiencies (71 ± 4%) in combination with a remarkable time stability (180 d, 4 °C).
- Published
- 2019
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