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Provedor de dados:  BJPS
País:  Brazil
Título:  Pharmaceutical films made from the waste material from the preparation of propolis extracts: development and characterization
Autores:  Toledo,Lucas de Alcântara Sica de
Bavato,Maíra Isabeli
Rosseto,Hélen Cássia
Bruschi,Marcos Luciano
Data:  2015-12-01
Ano:  2015
Palavras-chave:  Propolis/byproducts
Propolis/use of waste material/films development
Films/propolis byproducts/physicochemical properties
Resumo:  abstract This study investigated the development and characterized the physicochemical properties of films obtained from by-products (BP) from the preparation of propolis extracts. Films were produced in the presence and absence of a polymeric adjuvant (gelatin or ethylcellulose) and propylene glycol by a solvent casting method. Density, surface topography by scanning electron microscopy, mechanical properties (folding endurance, tensile strength and percentage elongation), water vapour permeability (WVP), moisture uptake capacity, thermogravimetry, differential scanning calorimetry and Fourier transform infrared spectroscopy (FTIR) were determined. The films were a transparent, light greenish-yellow colour, with a uniform surface, and were flexible and easy to handle. The thickness and density of the preparations indicated that the compounds were homogeneously dispersed throughout the film. Mechanical properties were influenced by the film composition; films containing gelatin were more resistant to stress, while those containing ethylcellulose were more flexible. Increasing the adjuvant concentration decreased the elasticity and the rupture resistance, but increased the moisture uptake capacity and WVP of the formulations. BP was thermally stable as were the films. FTIR tests suggested interactions between BP and the adjuvants. This work could contribute to the utilization of BP to prepare films for food and pharmaceutical uses
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Universidade de São Paulo, Faculdade de Ciências Farmacêuticas
Relação:  10.1590/S1984-82502015000400011
Formato:  text/html
Fonte:  Brazilian Journal of Pharmaceutical Sciences v.51 n.4 2015
Direitos:  info:eu-repo/semantics/openAccess

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