Emulgels Containing Propolis and Curcumin: The Effect of Type of Vegetable Oil, Poly(Acrylic Acid) and Bioactive Agent on Physicochemical Stability, Mechanical and Rheological Properties

Gels

卷:7

Katieli da Silva Souza Campanholi¹  Wilker Caetano¹  Hélen Cássia Rosseto²  Jéssica Bassi da Silva²  Rafaela Said dos Santos²  Camila Felix Vecchi²  Marcos Luciano Bruschi² 

[1] Postgraduate Program in Chemistry, Department of Chemistry, Research Nucleus in Photodynamic Systems, State University of Maringa, Maringa 87020-900, PR, Brazil;

[2] Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa 87020-900, PR, Brazil;

关键词: gels;    emulgels;    physicochemical properties;    mechanical;    rheology;    bioadhesion;   

DOI  :  10.3390/gels7030120

来源: DOAJ

【 摘 要 】

Emulgels are obtained by the entrapment of an organic phase within a three-dimensional network built by hydrophilic molecules. Polymers based on cross-linked poly(acrylic acid) have been utilized as gel matrices, improving adhesiveness, rheological and mechanical performance. Propolis (PRP) produced by Apis mellifera L. bees displays a wide range of biological activities. Together with curcumin (CUR), they may show synergic anti-inflammatory, antioxidant and antimicrobial action on skin disorders. This work investigated the effect of vegetable oils (sweet almond, andiroba, and passion fruit) with regard to the physicochemical properties of emulgels composed of Carbopol 934P^®, Carbopol 974P^®, or polycarbophil aiming the CUR and PRP delivery. Physicochemical stability enabled the selection of systems containing passion fruit or andiroba oil. Mechanical and rheological characteristics provided rational comprehension of how vegetable oils and bioactive agents affect the structure of emulsion gels. All formulations exhibited high physiochemical stability and properties dependent on the polymer type, oil, and bioactive agent. Formulations displayed pseudoplastic, thixotropic and viscoelastic properties. Emulgels containing andiroba oil were the most stable systems. Carbopol 934P^® or polycarbophil presence resulted in formulations with improved smoothness and mechanical properties. Systems containing andiroba oil and one of these two polymers are promising for further investigations as topical delivery systems of CUR and/or PRP on the skin and mucous membranes.

【 授权许可】

Unknown