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Lecithin based lamellar liquid crystals as a physiologically acceptable dermal delivery system for ascorbyl palmitateGosenca Matjaž, Mirjam ; Bešter-Rogač, Marija ; Gašperlin, MirjanaLiquid crystalline systems with a lamellar structure have been extensively studied as dermal delivery systems. Ascorbyl palmitate (AP) is one of the most studied and used ascorbic acid derivatives ... and is employed as an antioxidant to prevent skin aging. The aim of this study was to develop and characterize skin-compliant dermal delivery systems with a liquid crystalline structure for AP. First, a pseudoternary phase diagram was constructed using Tween 80/lecithin/isopropyl myristate/water at a Tween 80/lecithin mass ratio of 1/1, and the region of lamellar liquid crystals was identified. Second, selected unloaded and AP-loaded lamellar liquid crystal systems were physicochemically characterized with polarizing optical microscopy, small-angle X-ray scattering, differential scanning calorimetry, and rheology techniques. The interlayer spacing and rheological parameters differ regarding quantitative composition, whereas the microstructure of the lamellar phase was affected by the AP incorporation, resulting either in additional micellar structures (at 25 and 32°C) or being completely destroyed at higher temperature (37°C). After this, the study was oriented towards in vitro cytotoxicity evaluation of lamellar liquid crystal systems on a keratinocyte cell line. The results suggest that the lamellar liquid crystals that were developed could be used as a physiologically acceptable dermal delivery system.Source: Emerging Nanopharmaceuticals for Non-parenteral Application Routes : edited by Jelena Filipović-Grčić, Aleš Mrhar and Hans E. Junginger (Vol. 50, issue 1, str. 114-122)Type of material - conference contributionPublish date - 2013Language - englishCOBISS.SI-ID - 3440753
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source: Emerging Nanopharmaceuticals for Non-parenteral Application Routes : edited by Jelena Filipović-Grčić, Aleš Mrhar and Hans E. Junginger (Vol. 50, issue 1, str. 114-122)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Gosenca Matjaž, Mirjam | 29887 |
Bešter-Rogač, Marija | 04657 |
Gašperlin, Mirjana | 11789 |
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