Abstract
Self-nanoemulsion drug delivery systems (SNEDDS) represent a potential carrier to improve solubility and bioavailability of health care products. In this sense, copaiba oil (CO) loaded on cosurfactant-free SNEDDS formulations (CO-SNEDDS) were obtained by using phase diagram performed on different concentrations of constituents (oil, surfactant and water). The CO-SNEDDS are composed of 1% (m/m) of oil phase, 20% (m/m) of Tween 80, and 79% (m/m) of double-distilled water. Specifically, varying the oil phase to 1% of CO affords the so-called SNECO system, and 1% of CO blended on a 1:1 ratio with coconut oil or sunflower oil affords, respectively, the SNECO-COO and SNECO-SO derivative systems. CO sample was authenticated by gas chromatography equipped with a flame ionization detector and the CO-SNEDDS samples were characterized by droplet particle size, zeta potential, polarized light microscopy, pH, conductivity, refractive index, rheological and surface tension analyses. According to the antioxidant tests reducing power and hydroxyl inhibiting formation, the findings displayed 47.89 and 72.92% for SNECO, 46.48 and 84.11% for SNECO-COO, and 52.46 and 74.48% for SNECO-SO, respectively. From now on CO-SNEDDS based systems become available as promising targets for novel medicinal investigations and also could be undertaken for the oral administration of poorly water soluble drugs.
Highlights
Free radicals are produced by many factors, such as physical effects, chemical reactions and metabolic processes, and play important roles in the homeostasis of organism
Sesquiterpenes, diterpenes and fatty acids were identified in copaiba oil (CO) (Copaiba multijuga Hayne) by using GCMS analyses, which show 73.1% of sesquiterpenes, 16.9% of diterpenes, and 10.5% corresponding to fatty acids
Non-toxic compounds were used to prepare CO-colloidal formulations (SNECO, SNECO-coconut oil (COO) and SNECOSO), which were characterized by using polarized light microscopy, pH, conductivity, refractive index, droplet size, rheological behavior and surface tension analyses
Summary
Free radicals are produced by many factors, such as physical effects, chemical reactions and metabolic processes, and play important roles in the homeostasis of organism.
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