期刊
MATERIALS
卷 14, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/ma14040745
关键词
emulsion films; mechanical properties; moisture content; contact angle; skin assays; microparticles; encapsulation; Calendula officinalis flower extract
类别
资金
- National Science Centre (NCN, Poland) [UMO-2016/21/D/ST8/01705]
This study aimed to design emulsion films based on sodium alginate, gelatin, and glycerol, and modify them with the addition of lipids; the addition of polylactide (PLA) microparticles with Calendula officinalis flower extract resulted in improved skin condition after application, suggesting potential for designing new cosmetic forms.
This study aimed at designing emulsion films based on sodium alginate, gelatin, and glycerol, and their modification by the addition of lipids (cottonseed oil and beeswax). Film composition with the most promising properties was further modified by the incorporation of polylactide (PLA) microparticles with Calendula officinalis flower extract. PLA microspheres were obtained by the emulsion/solvent evaporation method. The size distribution of oily particles in emulsions was investigated. Mechanical properties, moisture content, UV-Vis spectra, and the color of films were analyzed, while biophysical skin parameters were assessed after their application to the skin. Moreover, the contact angles were measured, and the surface free energy of polymeric films was determined. An investigation of the amount of Calendula officinalis flower extract which can be incorporated into PLA microparticles was performed. The modification of the composition of films significantly influenced their physicochemical properties. The selected active ingredient in the form of plant extract was successfully incorporated into polymeric microparticles that were further added into the developed emulsion film. The condition of the skin after the application of obtained emulsion films improved. The prepared materials, especially containing microparticles with plant extract, can be considered for designing new cosmetic forms, such as cosmetic masks, as well as new topical formulations for pharmaceutical delivery.
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