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- Title
Novel Organogels from Mauritia flexuosa L.f and Caryodendron orinocense Karst.: A Topical Alternative.
- Authors
Narvaez, Luis Eduardo Mosquera; Carrillo, Marcela P.; Cardona-Jaramillo, Juliana E. C.; Vallejo, Bibiana Margarita; Ferreira, Lindalva Maria de Meneses Costa; Silva-Júnior, José Otávio Carréra; Ribeiro-Costa, Roseane Maria
- Abstract
Organogels have importance for topical applications because they can be used to deliver drugs in a controlled and prolonged fashion. These are materials consisting of a three-dimensional network of organic molecules dispersed in a solvent. Recent studies have demonstrated that the solvent could be replaced by oils from non-conventional biologic sources. There is a diversity of not-explored species in the Amazon that are promising sources of vegetable oils with a promising composition. This study developed an organogel with buriti (Mauritia flexuosa L.f) and cacay (Caryodendron orinocense Karst.) oils, using cetostearyl alcohol as an organogelator due to its compatibility, stability, security, affordability, and it is readily available. The oils were characterized, and the organogels were synthesized by studying their crystal evolution and oil-binding capacity. The microstructure was evaluated with polarized light microscopy, fractal dimension, FTIR spectroscopy, XRD, and thermal and rheological analyses. It was found that the critical gelation concentration was higher for cacay oil as it possessed a higher amount of polyunsaturated triacylglycerols. The crystals of the buriti organogel had a smaller lamellar shape, a greater surface area, and physical and thermal stability; although, it presented a slower crystal evolution due to the low number of minor compounds and a greater number of saturated triacylglycerols. The polar fraction of the organogelators as well as triacylglycerol and minor polar compounds are important in forming crystallization nuclei. The study showed that Amazonian oils in crystallization processes form microstructures with differentiating physicochemical properties.
- Subjects
POLARIZATION microscopy; TOPICAL drug administration; KARST; VEGETABLE oils; FOURIER transform infrared spectroscopy; FRACTAL dimensions; GELATION
- Publication
Pharmaceutics, 2023, Vol 15, Issue 12, p2681
- ISSN
1999-4923
- Publication type
Article
- DOI
10.3390/pharmaceutics15122681